2014-12-11 15:02:04 -07:00
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/*
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* Module for pnfs flexfile layout driver.
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*
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* Copyright (c) 2014, Primary Data, Inc. All rights reserved.
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*
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* Tao Peng <bergwolf@primarydata.com>
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*/
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#include <linux/nfs_fs.h>
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#include <linux/nfs_page.h>
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#include <linux/module.h>
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#include <linux/sunrpc/metrics.h>
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#include "flexfilelayout.h"
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#include "../nfs4session.h"
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2015-04-15 11:00:05 -06:00
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#include "../nfs4idmap.h"
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2014-12-11 15:02:04 -07:00
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#include "../internal.h"
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#include "../delegation.h"
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#include "../nfs4trace.h"
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#include "../iostat.h"
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#include "../nfs.h"
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2015-06-23 05:52:01 -06:00
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#include "../nfs42.h"
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2014-12-11 15:02:04 -07:00
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#define NFSDBG_FACILITY NFSDBG_PNFS_LD
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#define FF_LAYOUT_POLL_RETRY_MAX (15*HZ)
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static struct pnfs_layout_hdr *
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ff_layout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags)
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{
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struct nfs4_flexfile_layout *ffl;
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ffl = kzalloc(sizeof(*ffl), gfp_flags);
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if (ffl) {
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INIT_LIST_HEAD(&ffl->error_list);
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2015-08-24 18:03:17 -06:00
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INIT_LIST_HEAD(&ffl->mirrors);
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2014-12-11 15:02:04 -07:00
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return &ffl->generic_hdr;
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} else
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return NULL;
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}
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static void
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ff_layout_free_layout_hdr(struct pnfs_layout_hdr *lo)
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{
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struct nfs4_ff_layout_ds_err *err, *n;
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list_for_each_entry_safe(err, n, &FF_LAYOUT_FROM_HDR(lo)->error_list,
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list) {
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list_del(&err->list);
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kfree(err);
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}
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kfree(FF_LAYOUT_FROM_HDR(lo));
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}
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static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
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{
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__be32 *p;
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p = xdr_inline_decode(xdr, NFS4_STATEID_SIZE);
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if (unlikely(p == NULL))
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return -ENOBUFS;
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memcpy(stateid, p, NFS4_STATEID_SIZE);
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dprintk("%s: stateid id= [%x%x%x%x]\n", __func__,
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p[0], p[1], p[2], p[3]);
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return 0;
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}
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static int decode_deviceid(struct xdr_stream *xdr, struct nfs4_deviceid *devid)
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{
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__be32 *p;
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p = xdr_inline_decode(xdr, NFS4_DEVICEID4_SIZE);
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if (unlikely(!p))
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return -ENOBUFS;
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memcpy(devid, p, NFS4_DEVICEID4_SIZE);
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nfs4_print_deviceid(devid);
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return 0;
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}
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static int decode_nfs_fh(struct xdr_stream *xdr, struct nfs_fh *fh)
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{
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__be32 *p;
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p = xdr_inline_decode(xdr, 4);
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if (unlikely(!p))
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return -ENOBUFS;
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fh->size = be32_to_cpup(p++);
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if (fh->size > sizeof(struct nfs_fh)) {
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printk(KERN_ERR "NFS flexfiles: Too big fh received %d\n",
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fh->size);
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return -EOVERFLOW;
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}
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/* fh.data */
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p = xdr_inline_decode(xdr, fh->size);
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if (unlikely(!p))
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return -ENOBUFS;
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memcpy(&fh->data, p, fh->size);
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dprintk("%s: fh len %d\n", __func__, fh->size);
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return 0;
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}
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/*
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* Currently only stringified uids and gids are accepted.
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* I.e., kerberos is not supported to the DSes, so no pricipals.
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*
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* That means that one common function will suffice, but when
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* principals are added, this should be split to accomodate
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* calls to both nfs_map_name_to_uid() and nfs_map_group_to_gid().
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*/
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static int
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decode_name(struct xdr_stream *xdr, u32 *id)
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{
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__be32 *p;
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int len;
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/* opaque_length(4)*/
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p = xdr_inline_decode(xdr, 4);
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if (unlikely(!p))
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return -ENOBUFS;
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len = be32_to_cpup(p++);
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if (len < 0)
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return -EINVAL;
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dprintk("%s: len %u\n", __func__, len);
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/* opaque body */
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p = xdr_inline_decode(xdr, len);
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if (unlikely(!p))
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return -ENOBUFS;
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if (!nfs_map_string_to_numeric((char *)p, len, id))
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return -EINVAL;
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return 0;
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}
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2015-08-24 18:03:17 -06:00
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static bool ff_mirror_match_fh(const struct nfs4_ff_layout_mirror *m1,
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const struct nfs4_ff_layout_mirror *m2)
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{
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int i, j;
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if (m1->fh_versions_cnt != m2->fh_versions_cnt)
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return false;
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for (i = 0; i < m1->fh_versions_cnt; i++) {
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bool found_fh = false;
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for (j = 0; j < m2->fh_versions_cnt; i++) {
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if (nfs_compare_fh(&m1->fh_versions[i],
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&m2->fh_versions[j]) == 0) {
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found_fh = true;
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break;
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}
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}
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if (!found_fh)
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return false;
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}
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return true;
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}
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static struct nfs4_ff_layout_mirror *
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ff_layout_add_mirror(struct pnfs_layout_hdr *lo,
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struct nfs4_ff_layout_mirror *mirror)
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{
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struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(lo);
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struct nfs4_ff_layout_mirror *pos;
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struct inode *inode = lo->plh_inode;
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spin_lock(&inode->i_lock);
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list_for_each_entry(pos, &ff_layout->mirrors, mirrors) {
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if (mirror->mirror_ds != pos->mirror_ds)
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continue;
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if (!ff_mirror_match_fh(mirror, pos))
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continue;
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if (atomic_inc_not_zero(&pos->ref)) {
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spin_unlock(&inode->i_lock);
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return pos;
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}
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}
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list_add(&mirror->mirrors, &ff_layout->mirrors);
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mirror->layout = lo;
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spin_unlock(&inode->i_lock);
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return mirror;
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}
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2015-08-24 21:19:25 -06:00
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static void
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2015-08-24 18:03:17 -06:00
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ff_layout_remove_mirror(struct nfs4_ff_layout_mirror *mirror)
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{
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struct inode *inode;
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if (mirror->layout == NULL)
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return;
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inode = mirror->layout->plh_inode;
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spin_lock(&inode->i_lock);
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list_del(&mirror->mirrors);
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spin_unlock(&inode->i_lock);
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mirror->layout = NULL;
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}
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2015-08-24 16:08:30 -06:00
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static struct nfs4_ff_layout_mirror *ff_layout_alloc_mirror(gfp_t gfp_flags)
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{
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struct nfs4_ff_layout_mirror *mirror;
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mirror = kzalloc(sizeof(*mirror), gfp_flags);
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if (mirror != NULL) {
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spin_lock_init(&mirror->lock);
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atomic_set(&mirror->ref, 1);
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2015-08-24 18:03:17 -06:00
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INIT_LIST_HEAD(&mirror->mirrors);
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2015-08-24 16:08:30 -06:00
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}
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return mirror;
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}
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static void ff_layout_free_mirror(struct nfs4_ff_layout_mirror *mirror)
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{
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2015-08-24 18:03:17 -06:00
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ff_layout_remove_mirror(mirror);
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2015-08-24 16:08:30 -06:00
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kfree(mirror->fh_versions);
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2015-09-01 13:03:56 -06:00
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if (mirror->cred)
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put_rpccred(mirror->cred);
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2015-08-24 16:08:30 -06:00
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nfs4_ff_layout_put_deviceid(mirror->mirror_ds);
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kfree(mirror);
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}
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static void ff_layout_put_mirror(struct nfs4_ff_layout_mirror *mirror)
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{
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if (mirror != NULL && atomic_dec_and_test(&mirror->ref))
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ff_layout_free_mirror(mirror);
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}
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2014-12-11 15:02:04 -07:00
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static void ff_layout_free_mirror_array(struct nfs4_ff_layout_segment *fls)
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{
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int i;
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if (fls->mirror_array) {
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for (i = 0; i < fls->mirror_array_cnt; i++) {
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/* normally mirror_ds is freed in
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* .free_deviceid_node but we still do it here
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* for .alloc_lseg error path */
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2015-08-24 16:08:30 -06:00
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ff_layout_put_mirror(fls->mirror_array[i]);
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2014-12-11 15:02:04 -07:00
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}
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kfree(fls->mirror_array);
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fls->mirror_array = NULL;
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}
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}
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static int ff_layout_check_layout(struct nfs4_layoutget_res *lgr)
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{
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int ret = 0;
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dprintk("--> %s\n", __func__);
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/* FIXME: remove this check when layout segment support is added */
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if (lgr->range.offset != 0 ||
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lgr->range.length != NFS4_MAX_UINT64) {
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dprintk("%s Only whole file layouts supported. Use MDS i/o\n",
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__func__);
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ret = -EINVAL;
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}
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dprintk("--> %s returns %d\n", __func__, ret);
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return ret;
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}
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static void _ff_layout_free_lseg(struct nfs4_ff_layout_segment *fls)
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{
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if (fls) {
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ff_layout_free_mirror_array(fls);
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kfree(fls);
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}
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}
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2015-08-25 15:38:25 -06:00
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static bool
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ff_lseg_range_is_after(const struct pnfs_layout_range *l1,
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const struct pnfs_layout_range *l2)
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{
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u64 end1, end2;
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if (l1->iomode != l2->iomode)
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return l1->iomode != IOMODE_READ;
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end1 = pnfs_calc_offset_end(l1->offset, l1->length);
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end2 = pnfs_calc_offset_end(l2->offset, l2->length);
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if (end1 < l2->offset)
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return false;
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if (end2 < l1->offset)
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return true;
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return l2->offset <= l1->offset;
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}
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static bool
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ff_lseg_merge(struct pnfs_layout_segment *new,
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struct pnfs_layout_segment *old)
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{
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u64 new_end, old_end;
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if (new->pls_range.iomode != old->pls_range.iomode)
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return false;
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old_end = pnfs_calc_offset_end(old->pls_range.offset,
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old->pls_range.length);
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if (old_end < new->pls_range.offset)
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return false;
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new_end = pnfs_calc_offset_end(new->pls_range.offset,
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new->pls_range.length);
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if (new_end < old->pls_range.offset)
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return false;
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/* Mergeable: copy info from 'old' to 'new' */
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if (new_end < old_end)
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new_end = old_end;
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if (new->pls_range.offset < old->pls_range.offset)
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new->pls_range.offset = old->pls_range.offset;
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new->pls_range.length = pnfs_calc_offset_length(new->pls_range.offset,
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new_end);
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if (test_bit(NFS_LSEG_ROC, &old->pls_flags))
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set_bit(NFS_LSEG_ROC, &new->pls_flags);
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if (test_bit(NFS_LSEG_LAYOUTRETURN, &old->pls_flags))
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set_bit(NFS_LSEG_LAYOUTRETURN, &new->pls_flags);
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return true;
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}
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static void
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ff_layout_add_lseg(struct pnfs_layout_hdr *lo,
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struct pnfs_layout_segment *lseg,
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struct list_head *free_me)
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{
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pnfs_generic_layout_insert_lseg(lo, lseg,
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ff_lseg_range_is_after,
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ff_lseg_merge,
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free_me);
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}
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|
2014-12-11 15:02:04 -07:00
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static void ff_layout_sort_mirrors(struct nfs4_ff_layout_segment *fls)
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{
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int i, j;
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for (i = 0; i < fls->mirror_array_cnt - 1; i++) {
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for (j = i + 1; j < fls->mirror_array_cnt; j++)
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if (fls->mirror_array[i]->efficiency <
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2015-06-12 10:58:50 -06:00
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fls->mirror_array[j]->efficiency)
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swap(fls->mirror_array[i],
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fls->mirror_array[j]);
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2014-12-11 15:02:04 -07:00
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}
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}
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2015-11-02 07:59:00 -07:00
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static void ff_layout_mark_devices_valid(struct nfs4_ff_layout_segment *fls)
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{
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struct nfs4_deviceid_node *node;
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int i;
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if (!(fls->flags & FF_FLAGS_NO_IO_THRU_MDS))
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return;
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|
|
|
for (i = 0; i < fls->mirror_array_cnt; i++) {
|
|
|
|
node = &fls->mirror_array[i]->mirror_ds->id_node;
|
|
|
|
clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
static struct pnfs_layout_segment *
|
|
|
|
ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh,
|
|
|
|
struct nfs4_layoutget_res *lgr,
|
|
|
|
gfp_t gfp_flags)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_segment *ret;
|
|
|
|
struct nfs4_ff_layout_segment *fls = NULL;
|
|
|
|
struct xdr_stream stream;
|
|
|
|
struct xdr_buf buf;
|
|
|
|
struct page *scratch;
|
|
|
|
u64 stripe_unit;
|
|
|
|
u32 mirror_array_cnt;
|
|
|
|
__be32 *p;
|
|
|
|
int i, rc;
|
|
|
|
|
|
|
|
dprintk("--> %s\n", __func__);
|
|
|
|
scratch = alloc_page(gfp_flags);
|
|
|
|
if (!scratch)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
|
|
|
xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages,
|
|
|
|
lgr->layoutp->len);
|
|
|
|
xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
|
|
|
|
|
|
|
|
/* stripe unit and mirror_array_cnt */
|
|
|
|
rc = -EIO;
|
|
|
|
p = xdr_inline_decode(&stream, 8 + 4);
|
|
|
|
if (!p)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
p = xdr_decode_hyper(p, &stripe_unit);
|
|
|
|
mirror_array_cnt = be32_to_cpup(p++);
|
|
|
|
dprintk("%s: stripe_unit=%llu mirror_array_cnt=%u\n", __func__,
|
|
|
|
stripe_unit, mirror_array_cnt);
|
|
|
|
|
|
|
|
if (mirror_array_cnt > NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT ||
|
|
|
|
mirror_array_cnt == 0)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
rc = -ENOMEM;
|
|
|
|
fls = kzalloc(sizeof(*fls), gfp_flags);
|
|
|
|
if (!fls)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
fls->mirror_array_cnt = mirror_array_cnt;
|
|
|
|
fls->stripe_unit = stripe_unit;
|
|
|
|
fls->mirror_array = kcalloc(fls->mirror_array_cnt,
|
|
|
|
sizeof(fls->mirror_array[0]), gfp_flags);
|
|
|
|
if (fls->mirror_array == NULL)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
for (i = 0; i < fls->mirror_array_cnt; i++) {
|
2015-08-24 18:03:17 -06:00
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
2014-12-11 15:02:04 -07:00
|
|
|
struct nfs4_deviceid devid;
|
|
|
|
struct nfs4_deviceid_node *idnode;
|
|
|
|
u32 ds_count;
|
|
|
|
u32 fh_count;
|
|
|
|
int j;
|
|
|
|
|
|
|
|
rc = -EIO;
|
|
|
|
p = xdr_inline_decode(&stream, 4);
|
|
|
|
if (!p)
|
|
|
|
goto out_err_free;
|
|
|
|
ds_count = be32_to_cpup(p);
|
|
|
|
|
|
|
|
/* FIXME: allow for striping? */
|
|
|
|
if (ds_count != 1)
|
|
|
|
goto out_err_free;
|
|
|
|
|
2015-08-24 16:08:30 -06:00
|
|
|
fls->mirror_array[i] = ff_layout_alloc_mirror(gfp_flags);
|
2014-12-11 15:02:04 -07:00
|
|
|
if (fls->mirror_array[i] == NULL) {
|
|
|
|
rc = -ENOMEM;
|
|
|
|
goto out_err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
fls->mirror_array[i]->ds_count = ds_count;
|
|
|
|
|
|
|
|
/* deviceid */
|
|
|
|
rc = decode_deviceid(&stream, &devid);
|
|
|
|
if (rc)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
idnode = nfs4_find_get_deviceid(NFS_SERVER(lh->plh_inode),
|
|
|
|
&devid, lh->plh_lc_cred,
|
|
|
|
gfp_flags);
|
|
|
|
/*
|
|
|
|
* upon success, mirror_ds is allocated by previous
|
|
|
|
* getdeviceinfo, or newly by .alloc_deviceid_node
|
|
|
|
* nfs4_find_get_deviceid failure is indeed getdeviceinfo falure
|
|
|
|
*/
|
|
|
|
if (idnode)
|
|
|
|
fls->mirror_array[i]->mirror_ds =
|
|
|
|
FF_LAYOUT_MIRROR_DS(idnode);
|
|
|
|
else
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
/* efficiency */
|
|
|
|
rc = -EIO;
|
|
|
|
p = xdr_inline_decode(&stream, 4);
|
|
|
|
if (!p)
|
|
|
|
goto out_err_free;
|
|
|
|
fls->mirror_array[i]->efficiency = be32_to_cpup(p);
|
|
|
|
|
|
|
|
/* stateid */
|
|
|
|
rc = decode_stateid(&stream, &fls->mirror_array[i]->stateid);
|
|
|
|
if (rc)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
/* fh */
|
|
|
|
p = xdr_inline_decode(&stream, 4);
|
|
|
|
if (!p)
|
|
|
|
goto out_err_free;
|
|
|
|
fh_count = be32_to_cpup(p);
|
|
|
|
|
|
|
|
fls->mirror_array[i]->fh_versions =
|
|
|
|
kzalloc(fh_count * sizeof(struct nfs_fh),
|
|
|
|
gfp_flags);
|
|
|
|
if (fls->mirror_array[i]->fh_versions == NULL) {
|
|
|
|
rc = -ENOMEM;
|
|
|
|
goto out_err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (j = 0; j < fh_count; j++) {
|
|
|
|
rc = decode_nfs_fh(&stream,
|
|
|
|
&fls->mirror_array[i]->fh_versions[j]);
|
|
|
|
if (rc)
|
|
|
|
goto out_err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
fls->mirror_array[i]->fh_versions_cnt = fh_count;
|
|
|
|
|
|
|
|
/* user */
|
|
|
|
rc = decode_name(&stream, &fls->mirror_array[i]->uid);
|
|
|
|
if (rc)
|
|
|
|
goto out_err_free;
|
|
|
|
|
|
|
|
/* group */
|
|
|
|
rc = decode_name(&stream, &fls->mirror_array[i]->gid);
|
|
|
|
if (rc)
|
|
|
|
goto out_err_free;
|
|
|
|
|
2015-08-24 18:03:17 -06:00
|
|
|
mirror = ff_layout_add_mirror(lh, fls->mirror_array[i]);
|
|
|
|
if (mirror != fls->mirror_array[i]) {
|
|
|
|
ff_layout_free_mirror(fls->mirror_array[i]);
|
|
|
|
fls->mirror_array[i] = mirror;
|
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
dprintk("%s: uid %d gid %d\n", __func__,
|
|
|
|
fls->mirror_array[i]->uid,
|
|
|
|
fls->mirror_array[i]->gid);
|
|
|
|
}
|
|
|
|
|
2015-06-26 12:51:32 -06:00
|
|
|
p = xdr_inline_decode(&stream, 4);
|
2015-11-16 09:26:07 -07:00
|
|
|
if (!p)
|
|
|
|
goto out_sort_mirrors;
|
|
|
|
fls->flags = be32_to_cpup(p);
|
|
|
|
|
|
|
|
p = xdr_inline_decode(&stream, 4);
|
|
|
|
if (!p)
|
|
|
|
goto out_sort_mirrors;
|
|
|
|
for (i=0; i < fls->mirror_array_cnt; i++)
|
|
|
|
fls->mirror_array[i]->report_interval = be32_to_cpup(p);
|
2015-06-26 12:51:32 -06:00
|
|
|
|
2015-11-16 09:26:07 -07:00
|
|
|
out_sort_mirrors:
|
2014-12-11 15:02:04 -07:00
|
|
|
ff_layout_sort_mirrors(fls);
|
|
|
|
rc = ff_layout_check_layout(lgr);
|
|
|
|
if (rc)
|
|
|
|
goto out_err_free;
|
2015-11-02 07:59:00 -07:00
|
|
|
ff_layout_mark_devices_valid(fls);
|
2014-12-11 15:02:04 -07:00
|
|
|
|
|
|
|
ret = &fls->generic_hdr;
|
|
|
|
dprintk("<-- %s (success)\n", __func__);
|
|
|
|
out_free_page:
|
|
|
|
__free_page(scratch);
|
|
|
|
return ret;
|
|
|
|
out_err_free:
|
|
|
|
_ff_layout_free_lseg(fls);
|
|
|
|
ret = ERR_PTR(rc);
|
|
|
|
dprintk("<-- %s (%d)\n", __func__, rc);
|
|
|
|
goto out_free_page;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool ff_layout_has_rw_segments(struct pnfs_layout_hdr *layout)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_segment *lseg;
|
|
|
|
|
|
|
|
list_for_each_entry(lseg, &layout->plh_segs, pls_list)
|
|
|
|
if (lseg->pls_range.iomode == IOMODE_RW)
|
|
|
|
return true;
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_free_lseg(struct pnfs_layout_segment *lseg)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg);
|
|
|
|
|
|
|
|
dprintk("--> %s\n", __func__);
|
|
|
|
|
|
|
|
if (lseg->pls_range.iomode == IOMODE_RW) {
|
|
|
|
struct nfs4_flexfile_layout *ffl;
|
|
|
|
struct inode *inode;
|
|
|
|
|
|
|
|
ffl = FF_LAYOUT_FROM_HDR(lseg->pls_layout);
|
|
|
|
inode = ffl->generic_hdr.plh_inode;
|
|
|
|
spin_lock(&inode->i_lock);
|
|
|
|
if (!ff_layout_has_rw_segments(lseg->pls_layout)) {
|
|
|
|
ffl->commit_info.nbuckets = 0;
|
|
|
|
kfree(ffl->commit_info.buckets);
|
|
|
|
ffl->commit_info.buckets = NULL;
|
|
|
|
}
|
|
|
|
spin_unlock(&inode->i_lock);
|
|
|
|
}
|
|
|
|
_ff_layout_free_lseg(fls);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return 1 until we have multiple lsegs support */
|
|
|
|
static int
|
|
|
|
ff_layout_get_lseg_count(struct nfs4_ff_layout_segment *fls)
|
|
|
|
{
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
static void
|
2015-08-20 12:12:51 -06:00
|
|
|
nfs4_ff_start_busy_timer(struct nfs4_ff_busy_timer *timer, ktime_t now)
|
2015-06-23 05:51:59 -06:00
|
|
|
{
|
2015-06-25 19:45:49 -06:00
|
|
|
/* first IO request? */
|
|
|
|
if (atomic_inc_return(&timer->n_ops) == 1) {
|
2015-08-20 12:12:51 -06:00
|
|
|
timer->start_time = now;
|
2015-06-23 05:51:59 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static ktime_t
|
2015-08-20 12:12:51 -06:00
|
|
|
nfs4_ff_end_busy_timer(struct nfs4_ff_busy_timer *timer, ktime_t now)
|
2015-06-23 05:51:59 -06:00
|
|
|
{
|
2015-08-20 12:12:51 -06:00
|
|
|
ktime_t start;
|
2015-06-23 05:51:59 -06:00
|
|
|
|
2015-06-25 19:45:49 -06:00
|
|
|
if (atomic_dec_return(&timer->n_ops) < 0)
|
|
|
|
WARN_ON_ONCE(1);
|
|
|
|
|
|
|
|
start = timer->start_time;
|
|
|
|
timer->start_time = now;
|
2015-06-23 05:51:59 -06:00
|
|
|
return ktime_sub(now, start);
|
|
|
|
}
|
|
|
|
|
2015-06-23 05:52:04 -06:00
|
|
|
static bool
|
2015-06-23 05:52:00 -06:00
|
|
|
nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror,
|
2015-08-20 12:12:51 -06:00
|
|
|
struct nfs4_ff_layoutstat *layoutstat,
|
|
|
|
ktime_t now)
|
2015-06-23 05:51:59 -06:00
|
|
|
{
|
2015-06-23 05:52:00 -06:00
|
|
|
static const ktime_t notime = {0};
|
2015-08-24 18:39:18 -06:00
|
|
|
s64 report_interval = FF_LAYOUTSTATS_REPORT_INTERVAL;
|
2015-06-23 05:52:00 -06:00
|
|
|
|
2015-08-20 12:12:51 -06:00
|
|
|
nfs4_ff_start_busy_timer(&layoutstat->busy_timer, now);
|
2015-06-25 19:45:49 -06:00
|
|
|
if (ktime_equal(mirror->start_time, notime))
|
|
|
|
mirror->start_time = now;
|
|
|
|
if (ktime_equal(mirror->last_report_time, notime))
|
|
|
|
mirror->last_report_time = now;
|
2015-11-16 09:26:07 -07:00
|
|
|
if (mirror->report_interval != 0)
|
|
|
|
report_interval = (s64)mirror->report_interval * 1000LL;
|
|
|
|
else if (layoutstats_timer != 0)
|
2015-08-24 18:39:18 -06:00
|
|
|
report_interval = (s64)layoutstats_timer * 1000LL;
|
2015-06-23 05:52:04 -06:00
|
|
|
if (ktime_to_ms(ktime_sub(now, mirror->last_report_time)) >=
|
2015-08-24 18:39:18 -06:00
|
|
|
report_interval) {
|
2015-06-23 05:52:04 -06:00
|
|
|
mirror->last_report_time = now;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
2015-06-23 05:51:59 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nfs4_ff_layout_stat_io_update_requested(struct nfs4_ff_layoutstat *layoutstat,
|
|
|
|
__u64 requested)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_io_stat *iostat = &layoutstat->io_stat;
|
|
|
|
|
|
|
|
iostat->ops_requested++;
|
|
|
|
iostat->bytes_requested += requested;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nfs4_ff_layout_stat_io_update_completed(struct nfs4_ff_layoutstat *layoutstat,
|
|
|
|
__u64 requested,
|
|
|
|
__u64 completed,
|
2015-08-20 12:12:51 -06:00
|
|
|
ktime_t time_completed,
|
|
|
|
ktime_t time_started)
|
2015-06-23 05:51:59 -06:00
|
|
|
{
|
|
|
|
struct nfs4_ff_io_stat *iostat = &layoutstat->io_stat;
|
2015-08-20 12:12:51 -06:00
|
|
|
ktime_t completion_time = ktime_sub(time_completed, time_started);
|
2015-06-23 05:51:59 -06:00
|
|
|
ktime_t timer;
|
|
|
|
|
|
|
|
iostat->ops_completed++;
|
|
|
|
iostat->bytes_completed += completed;
|
|
|
|
iostat->bytes_not_delivered += requested - completed;
|
|
|
|
|
2015-08-20 12:12:51 -06:00
|
|
|
timer = nfs4_ff_end_busy_timer(&layoutstat->busy_timer, time_completed);
|
2015-06-23 05:51:59 -06:00
|
|
|
iostat->total_busy_time =
|
|
|
|
ktime_add(iostat->total_busy_time, timer);
|
|
|
|
iostat->aggregate_completion_time =
|
2015-08-20 12:12:51 -06:00
|
|
|
ktime_add(iostat->aggregate_completion_time,
|
|
|
|
completion_time);
|
2015-06-23 05:51:59 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2015-08-24 16:22:28 -06:00
|
|
|
nfs4_ff_layout_stat_io_start_read(struct inode *inode,
|
|
|
|
struct nfs4_ff_layout_mirror *mirror,
|
2015-08-20 12:12:51 -06:00
|
|
|
__u64 requested, ktime_t now)
|
2015-06-23 05:51:59 -06:00
|
|
|
{
|
2015-06-23 05:52:04 -06:00
|
|
|
bool report;
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
spin_lock(&mirror->lock);
|
2015-08-20 12:12:51 -06:00
|
|
|
report = nfs4_ff_layoutstat_start_io(mirror, &mirror->read_stat, now);
|
2015-06-23 05:51:59 -06:00
|
|
|
nfs4_ff_layout_stat_io_update_requested(&mirror->read_stat, requested);
|
|
|
|
spin_unlock(&mirror->lock);
|
2015-06-23 05:52:04 -06:00
|
|
|
|
|
|
|
if (report)
|
2015-08-24 16:22:28 -06:00
|
|
|
pnfs_report_layoutstat(inode, GFP_KERNEL);
|
2015-06-23 05:51:59 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nfs4_ff_layout_stat_io_end_read(struct rpc_task *task,
|
|
|
|
struct nfs4_ff_layout_mirror *mirror,
|
|
|
|
__u64 requested,
|
|
|
|
__u64 completed)
|
|
|
|
{
|
|
|
|
spin_lock(&mirror->lock);
|
|
|
|
nfs4_ff_layout_stat_io_update_completed(&mirror->read_stat,
|
|
|
|
requested, completed,
|
2015-08-20 12:12:51 -06:00
|
|
|
ktime_get(), task->tk_start);
|
2015-06-23 05:51:59 -06:00
|
|
|
spin_unlock(&mirror->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2015-08-24 16:22:28 -06:00
|
|
|
nfs4_ff_layout_stat_io_start_write(struct inode *inode,
|
|
|
|
struct nfs4_ff_layout_mirror *mirror,
|
2015-08-20 12:12:51 -06:00
|
|
|
__u64 requested, ktime_t now)
|
2015-06-23 05:51:59 -06:00
|
|
|
{
|
2015-06-23 05:52:04 -06:00
|
|
|
bool report;
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
spin_lock(&mirror->lock);
|
2015-08-20 12:12:51 -06:00
|
|
|
report = nfs4_ff_layoutstat_start_io(mirror , &mirror->write_stat, now);
|
2015-06-23 05:51:59 -06:00
|
|
|
nfs4_ff_layout_stat_io_update_requested(&mirror->write_stat, requested);
|
|
|
|
spin_unlock(&mirror->lock);
|
2015-06-23 05:52:04 -06:00
|
|
|
|
|
|
|
if (report)
|
2015-08-24 16:22:28 -06:00
|
|
|
pnfs_report_layoutstat(inode, GFP_NOIO);
|
2015-06-23 05:51:59 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nfs4_ff_layout_stat_io_end_write(struct rpc_task *task,
|
|
|
|
struct nfs4_ff_layout_mirror *mirror,
|
|
|
|
__u64 requested,
|
|
|
|
__u64 completed,
|
|
|
|
enum nfs3_stable_how committed)
|
|
|
|
{
|
|
|
|
if (committed == NFS_UNSTABLE)
|
|
|
|
requested = completed = 0;
|
|
|
|
|
|
|
|
spin_lock(&mirror->lock);
|
|
|
|
nfs4_ff_layout_stat_io_update_completed(&mirror->write_stat,
|
2015-08-20 12:12:51 -06:00
|
|
|
requested, completed, ktime_get(), task->tk_start);
|
2015-06-23 05:51:59 -06:00
|
|
|
spin_unlock(&mirror->lock);
|
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
static int
|
|
|
|
ff_layout_alloc_commit_info(struct pnfs_layout_segment *lseg,
|
|
|
|
struct nfs_commit_info *cinfo,
|
|
|
|
gfp_t gfp_flags)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg);
|
|
|
|
struct pnfs_commit_bucket *buckets;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
if (cinfo->ds->nbuckets != 0) {
|
|
|
|
/* This assumes there is only one RW lseg per file.
|
|
|
|
* To support multiple lseg per file, we need to
|
|
|
|
* change struct pnfs_commit_bucket to allow dynamic
|
|
|
|
* increasing nbuckets.
|
|
|
|
*/
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = ff_layout_get_lseg_count(fls) * FF_LAYOUT_MIRROR_COUNT(lseg);
|
|
|
|
|
|
|
|
buckets = kcalloc(size, sizeof(struct pnfs_commit_bucket),
|
|
|
|
gfp_flags);
|
|
|
|
if (!buckets)
|
|
|
|
return -ENOMEM;
|
|
|
|
else {
|
|
|
|
int i;
|
|
|
|
|
|
|
|
spin_lock(cinfo->lock);
|
|
|
|
if (cinfo->ds->nbuckets != 0)
|
|
|
|
kfree(buckets);
|
|
|
|
else {
|
|
|
|
cinfo->ds->buckets = buckets;
|
|
|
|
cinfo->ds->nbuckets = size;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
|
|
INIT_LIST_HEAD(&buckets[i].written);
|
|
|
|
INIT_LIST_HEAD(&buckets[i].committing);
|
|
|
|
/* mark direct verifier as unset */
|
|
|
|
buckets[i].direct_verf.committed =
|
|
|
|
NFS_INVALID_STABLE_HOW;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock(cinfo->lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct nfs4_pnfs_ds *
|
2015-11-02 08:11:17 -07:00
|
|
|
ff_layout_choose_best_ds_for_read(struct pnfs_layout_segment *lseg,
|
|
|
|
int start_idx,
|
2014-12-11 15:02:04 -07:00
|
|
|
int *best_idx)
|
|
|
|
{
|
2015-11-02 08:11:17 -07:00
|
|
|
struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg);
|
2014-12-11 15:02:04 -07:00
|
|
|
struct nfs4_pnfs_ds *ds;
|
|
|
|
int idx;
|
|
|
|
|
|
|
|
/* mirrors are sorted by efficiency */
|
2015-11-02 08:11:17 -07:00
|
|
|
for (idx = start_idx; idx < fls->mirror_array_cnt; idx++) {
|
|
|
|
ds = nfs4_ff_layout_prepare_ds(lseg, idx, false);
|
2014-12-11 15:02:04 -07:00
|
|
|
if (ds) {
|
|
|
|
*best_idx = idx;
|
|
|
|
return ds;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
|
|
|
|
struct nfs_page *req)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_mirror *pgm;
|
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
|
|
|
struct nfs4_pnfs_ds *ds;
|
|
|
|
int ds_idx;
|
|
|
|
|
|
|
|
/* Use full layout for now */
|
2015-12-03 11:57:48 -07:00
|
|
|
if (!pgio->pg_lseg) {
|
2014-12-11 15:02:04 -07:00
|
|
|
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
|
|
|
|
req->wb_context,
|
|
|
|
0,
|
|
|
|
NFS4_MAX_UINT64,
|
|
|
|
IOMODE_READ,
|
|
|
|
GFP_KERNEL);
|
2015-12-03 11:57:48 -07:00
|
|
|
if (IS_ERR(pgio->pg_lseg)) {
|
|
|
|
pgio->pg_error = PTR_ERR(pgio->pg_lseg);
|
|
|
|
pgio->pg_lseg = NULL;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
2014-12-11 15:02:04 -07:00
|
|
|
/* If no lseg, fall back to read through mds */
|
|
|
|
if (pgio->pg_lseg == NULL)
|
|
|
|
goto out_mds;
|
|
|
|
|
2015-11-02 08:11:17 -07:00
|
|
|
ds = ff_layout_choose_best_ds_for_read(pgio->pg_lseg, 0, &ds_idx);
|
2014-12-11 15:02:04 -07:00
|
|
|
if (!ds)
|
|
|
|
goto out_mds;
|
|
|
|
mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx);
|
|
|
|
|
|
|
|
pgio->pg_mirror_idx = ds_idx;
|
|
|
|
|
|
|
|
/* read always uses only one mirror - idx 0 for pgio layer */
|
|
|
|
pgm = &pgio->pg_mirrors[0];
|
|
|
|
pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize;
|
|
|
|
|
|
|
|
return;
|
|
|
|
out_mds:
|
|
|
|
pnfs_put_lseg(pgio->pg_lseg);
|
|
|
|
pgio->pg_lseg = NULL;
|
|
|
|
nfs_pageio_reset_read_mds(pgio);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio,
|
|
|
|
struct nfs_page *req)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
|
|
|
struct nfs_pgio_mirror *pgm;
|
|
|
|
struct nfs_commit_info cinfo;
|
|
|
|
struct nfs4_pnfs_ds *ds;
|
|
|
|
int i;
|
|
|
|
int status;
|
|
|
|
|
2015-12-03 11:57:48 -07:00
|
|
|
if (!pgio->pg_lseg) {
|
2014-12-11 15:02:04 -07:00
|
|
|
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
|
|
|
|
req->wb_context,
|
|
|
|
0,
|
|
|
|
NFS4_MAX_UINT64,
|
|
|
|
IOMODE_RW,
|
|
|
|
GFP_NOFS);
|
2015-12-03 11:57:48 -07:00
|
|
|
if (IS_ERR(pgio->pg_lseg)) {
|
|
|
|
pgio->pg_error = PTR_ERR(pgio->pg_lseg);
|
|
|
|
pgio->pg_lseg = NULL;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
2014-12-11 15:02:04 -07:00
|
|
|
/* If no lseg, fall back to write through mds */
|
|
|
|
if (pgio->pg_lseg == NULL)
|
|
|
|
goto out_mds;
|
|
|
|
|
|
|
|
nfs_init_cinfo(&cinfo, pgio->pg_inode, pgio->pg_dreq);
|
|
|
|
status = ff_layout_alloc_commit_info(pgio->pg_lseg, &cinfo, GFP_NOFS);
|
|
|
|
if (status < 0)
|
|
|
|
goto out_mds;
|
|
|
|
|
|
|
|
/* Use a direct mapping of ds_idx to pgio mirror_idx */
|
|
|
|
if (WARN_ON_ONCE(pgio->pg_mirror_count !=
|
|
|
|
FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg)))
|
|
|
|
goto out_mds;
|
|
|
|
|
|
|
|
for (i = 0; i < pgio->pg_mirror_count; i++) {
|
|
|
|
ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, i, true);
|
|
|
|
if (!ds)
|
|
|
|
goto out_mds;
|
|
|
|
pgm = &pgio->pg_mirrors[i];
|
|
|
|
mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i);
|
|
|
|
pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].wsize;
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
out_mds:
|
|
|
|
pnfs_put_lseg(pgio->pg_lseg);
|
|
|
|
pgio->pg_lseg = NULL;
|
|
|
|
nfs_pageio_reset_write_mds(pgio);
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned int
|
|
|
|
ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio,
|
|
|
|
struct nfs_page *req)
|
|
|
|
{
|
2015-12-03 11:57:48 -07:00
|
|
|
if (!pgio->pg_lseg) {
|
2014-12-11 15:02:04 -07:00
|
|
|
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
|
|
|
|
req->wb_context,
|
|
|
|
0,
|
|
|
|
NFS4_MAX_UINT64,
|
|
|
|
IOMODE_RW,
|
|
|
|
GFP_NOFS);
|
2015-12-03 11:57:48 -07:00
|
|
|
if (IS_ERR(pgio->pg_lseg)) {
|
|
|
|
pgio->pg_error = PTR_ERR(pgio->pg_lseg);
|
|
|
|
pgio->pg_lseg = NULL;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
2014-12-11 15:02:04 -07:00
|
|
|
if (pgio->pg_lseg)
|
|
|
|
return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg);
|
|
|
|
|
|
|
|
/* no lseg means that pnfs is not in use, so no mirroring here */
|
|
|
|
nfs_pageio_reset_write_mds(pgio);
|
2015-12-03 11:57:48 -07:00
|
|
|
out:
|
2014-12-11 15:02:04 -07:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct nfs_pageio_ops ff_layout_pg_read_ops = {
|
|
|
|
.pg_init = ff_layout_pg_init_read,
|
|
|
|
.pg_test = pnfs_generic_pg_test,
|
|
|
|
.pg_doio = pnfs_generic_pg_readpages,
|
|
|
|
.pg_cleanup = pnfs_generic_pg_cleanup,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct nfs_pageio_ops ff_layout_pg_write_ops = {
|
|
|
|
.pg_init = ff_layout_pg_init_write,
|
|
|
|
.pg_test = pnfs_generic_pg_test,
|
|
|
|
.pg_doio = pnfs_generic_pg_writepages,
|
|
|
|
.pg_get_mirror_count = ff_layout_pg_get_mirror_count_write,
|
|
|
|
.pg_cleanup = pnfs_generic_pg_cleanup,
|
|
|
|
};
|
|
|
|
|
|
|
|
static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs)
|
|
|
|
{
|
|
|
|
struct rpc_task *task = &hdr->task;
|
|
|
|
|
|
|
|
pnfs_layoutcommit_inode(hdr->inode, false);
|
|
|
|
|
|
|
|
if (retry_pnfs) {
|
|
|
|
dprintk("%s Reset task %5u for i/o through pNFS "
|
|
|
|
"(req %s/%llu, %u bytes @ offset %llu)\n", __func__,
|
|
|
|
hdr->task.tk_pid,
|
|
|
|
hdr->inode->i_sb->s_id,
|
|
|
|
(unsigned long long)NFS_FILEID(hdr->inode),
|
|
|
|
hdr->args.count,
|
|
|
|
(unsigned long long)hdr->args.offset);
|
|
|
|
|
|
|
|
if (!hdr->dreq) {
|
|
|
|
struct nfs_open_context *ctx;
|
|
|
|
|
|
|
|
ctx = nfs_list_entry(hdr->pages.next)->wb_context;
|
|
|
|
set_bit(NFS_CONTEXT_RESEND_WRITES, &ctx->flags);
|
|
|
|
hdr->completion_ops->error_cleanup(&hdr->pages);
|
|
|
|
} else {
|
|
|
|
nfs_direct_set_resched_writes(hdr->dreq);
|
|
|
|
/* fake unstable write to let common nfs resend pages */
|
|
|
|
hdr->verf.committed = NFS_UNSTABLE;
|
2015-06-26 13:37:58 -06:00
|
|
|
hdr->good_bytes = hdr->args.count;
|
2014-12-11 15:02:04 -07:00
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) {
|
|
|
|
dprintk("%s Reset task %5u for i/o through MDS "
|
|
|
|
"(req %s/%llu, %u bytes @ offset %llu)\n", __func__,
|
|
|
|
hdr->task.tk_pid,
|
|
|
|
hdr->inode->i_sb->s_id,
|
|
|
|
(unsigned long long)NFS_FILEID(hdr->inode),
|
|
|
|
hdr->args.count,
|
|
|
|
(unsigned long long)hdr->args.offset);
|
|
|
|
|
|
|
|
task->tk_status = pnfs_write_done_resend_to_mds(hdr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_reset_read(struct nfs_pgio_header *hdr)
|
|
|
|
{
|
|
|
|
struct rpc_task *task = &hdr->task;
|
|
|
|
|
|
|
|
pnfs_layoutcommit_inode(hdr->inode, false);
|
|
|
|
|
|
|
|
if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) {
|
|
|
|
dprintk("%s Reset task %5u for i/o through MDS "
|
|
|
|
"(req %s/%llu, %u bytes @ offset %llu)\n", __func__,
|
|
|
|
hdr->task.tk_pid,
|
|
|
|
hdr->inode->i_sb->s_id,
|
|
|
|
(unsigned long long)NFS_FILEID(hdr->inode),
|
|
|
|
hdr->args.count,
|
|
|
|
(unsigned long long)hdr->args.offset);
|
|
|
|
|
|
|
|
task->tk_status = pnfs_read_done_resend_to_mds(hdr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_async_handle_error_v4(struct rpc_task *task,
|
|
|
|
struct nfs4_state *state,
|
|
|
|
struct nfs_client *clp,
|
|
|
|
struct pnfs_layout_segment *lseg,
|
|
|
|
int idx)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_hdr *lo = lseg->pls_layout;
|
|
|
|
struct inode *inode = lo->plh_inode;
|
|
|
|
struct nfs_server *mds_server = NFS_SERVER(inode);
|
|
|
|
|
|
|
|
struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx);
|
|
|
|
struct nfs_client *mds_client = mds_server->nfs_client;
|
|
|
|
struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table;
|
|
|
|
|
|
|
|
if (task->tk_status >= 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
switch (task->tk_status) {
|
|
|
|
/* MDS state errors */
|
|
|
|
case -NFS4ERR_DELEG_REVOKED:
|
|
|
|
case -NFS4ERR_ADMIN_REVOKED:
|
|
|
|
case -NFS4ERR_BAD_STATEID:
|
|
|
|
if (state == NULL)
|
|
|
|
break;
|
|
|
|
nfs_remove_bad_delegation(state->inode);
|
|
|
|
case -NFS4ERR_OPENMODE:
|
|
|
|
if (state == NULL)
|
|
|
|
break;
|
|
|
|
if (nfs4_schedule_stateid_recovery(mds_server, state) < 0)
|
|
|
|
goto out_bad_stateid;
|
|
|
|
goto wait_on_recovery;
|
|
|
|
case -NFS4ERR_EXPIRED:
|
|
|
|
if (state != NULL) {
|
|
|
|
if (nfs4_schedule_stateid_recovery(mds_server, state) < 0)
|
|
|
|
goto out_bad_stateid;
|
|
|
|
}
|
|
|
|
nfs4_schedule_lease_recovery(mds_client);
|
|
|
|
goto wait_on_recovery;
|
|
|
|
/* DS session errors */
|
|
|
|
case -NFS4ERR_BADSESSION:
|
|
|
|
case -NFS4ERR_BADSLOT:
|
|
|
|
case -NFS4ERR_BAD_HIGH_SLOT:
|
|
|
|
case -NFS4ERR_DEADSESSION:
|
|
|
|
case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
|
|
|
|
case -NFS4ERR_SEQ_FALSE_RETRY:
|
|
|
|
case -NFS4ERR_SEQ_MISORDERED:
|
|
|
|
dprintk("%s ERROR %d, Reset session. Exchangeid "
|
|
|
|
"flags 0x%x\n", __func__, task->tk_status,
|
|
|
|
clp->cl_exchange_flags);
|
|
|
|
nfs4_schedule_session_recovery(clp->cl_session, task->tk_status);
|
|
|
|
break;
|
|
|
|
case -NFS4ERR_DELAY:
|
|
|
|
case -NFS4ERR_GRACE:
|
|
|
|
rpc_delay(task, FF_LAYOUT_POLL_RETRY_MAX);
|
|
|
|
break;
|
|
|
|
case -NFS4ERR_RETRY_UNCACHED_REP:
|
|
|
|
break;
|
|
|
|
/* Invalidate Layout errors */
|
|
|
|
case -NFS4ERR_PNFS_NO_LAYOUT:
|
|
|
|
case -ESTALE: /* mapped NFS4ERR_STALE */
|
|
|
|
case -EBADHANDLE: /* mapped NFS4ERR_BADHANDLE */
|
|
|
|
case -EISDIR: /* mapped NFS4ERR_ISDIR */
|
|
|
|
case -NFS4ERR_FHEXPIRED:
|
|
|
|
case -NFS4ERR_WRONG_TYPE:
|
|
|
|
dprintk("%s Invalid layout error %d\n", __func__,
|
|
|
|
task->tk_status);
|
|
|
|
/*
|
|
|
|
* Destroy layout so new i/o will get a new layout.
|
|
|
|
* Layout will not be destroyed until all current lseg
|
|
|
|
* references are put. Mark layout as invalid to resend failed
|
|
|
|
* i/o and all i/o waiting on the slot table to the MDS until
|
|
|
|
* layout is destroyed and a new valid layout is obtained.
|
|
|
|
*/
|
|
|
|
pnfs_destroy_layout(NFS_I(inode));
|
|
|
|
rpc_wake_up(&tbl->slot_tbl_waitq);
|
|
|
|
goto reset;
|
|
|
|
/* RPC connection errors */
|
|
|
|
case -ECONNREFUSED:
|
|
|
|
case -EHOSTDOWN:
|
|
|
|
case -EHOSTUNREACH:
|
|
|
|
case -ENETUNREACH:
|
|
|
|
case -EIO:
|
|
|
|
case -ETIMEDOUT:
|
|
|
|
case -EPIPE:
|
|
|
|
dprintk("%s DS connection error %d\n", __func__,
|
|
|
|
task->tk_status);
|
|
|
|
nfs4_mark_deviceid_unavailable(devid);
|
|
|
|
rpc_wake_up(&tbl->slot_tbl_waitq);
|
|
|
|
/* fall through */
|
|
|
|
default:
|
2015-11-02 07:59:00 -07:00
|
|
|
if (ff_layout_no_fallback_to_mds(lseg) ||
|
|
|
|
ff_layout_has_available_ds(lseg))
|
2014-12-11 15:02:04 -07:00
|
|
|
return -NFS4ERR_RESET_TO_PNFS;
|
|
|
|
reset:
|
|
|
|
dprintk("%s Retry through MDS. Error %d\n", __func__,
|
|
|
|
task->tk_status);
|
|
|
|
return -NFS4ERR_RESET_TO_MDS;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
task->tk_status = 0;
|
|
|
|
return -EAGAIN;
|
|
|
|
out_bad_stateid:
|
|
|
|
task->tk_status = -EIO;
|
|
|
|
return 0;
|
|
|
|
wait_on_recovery:
|
|
|
|
rpc_sleep_on(&mds_client->cl_rpcwaitq, task, NULL);
|
|
|
|
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &mds_client->cl_state) == 0)
|
|
|
|
rpc_wake_up_queued_task(&mds_client->cl_rpcwaitq, task);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Retry all errors through either pNFS or MDS except for -EJUKEBOX */
|
|
|
|
static int ff_layout_async_handle_error_v3(struct rpc_task *task,
|
|
|
|
struct pnfs_layout_segment *lseg,
|
|
|
|
int idx)
|
|
|
|
{
|
|
|
|
struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx);
|
|
|
|
|
|
|
|
if (task->tk_status >= 0)
|
|
|
|
return 0;
|
|
|
|
|
2015-08-30 10:53:06 -06:00
|
|
|
switch (task->tk_status) {
|
|
|
|
/* File access problems. Don't mark the device as unavailable */
|
|
|
|
case -EACCES:
|
|
|
|
case -ESTALE:
|
|
|
|
case -EISDIR:
|
|
|
|
case -EBADHANDLE:
|
|
|
|
case -ELOOP:
|
|
|
|
case -ENOSPC:
|
|
|
|
break;
|
|
|
|
case -EJUKEBOX:
|
|
|
|
nfs_inc_stats(lseg->pls_layout->plh_inode, NFSIOS_DELAY);
|
|
|
|
goto out_retry;
|
|
|
|
default:
|
2014-12-11 15:02:04 -07:00
|
|
|
dprintk("%s DS connection error %d\n", __func__,
|
|
|
|
task->tk_status);
|
|
|
|
nfs4_mark_deviceid_unavailable(devid);
|
|
|
|
}
|
2015-08-30 10:53:06 -06:00
|
|
|
/* FIXME: Need to prevent infinite looping here. */
|
|
|
|
return -NFS4ERR_RESET_TO_PNFS;
|
|
|
|
out_retry:
|
2014-12-11 15:02:04 -07:00
|
|
|
task->tk_status = 0;
|
|
|
|
rpc_restart_call(task);
|
|
|
|
rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_async_handle_error(struct rpc_task *task,
|
|
|
|
struct nfs4_state *state,
|
|
|
|
struct nfs_client *clp,
|
|
|
|
struct pnfs_layout_segment *lseg,
|
|
|
|
int idx)
|
|
|
|
{
|
|
|
|
int vers = clp->cl_nfs_mod->rpc_vers->number;
|
|
|
|
|
|
|
|
switch (vers) {
|
|
|
|
case 3:
|
|
|
|
return ff_layout_async_handle_error_v3(task, lseg, idx);
|
|
|
|
case 4:
|
|
|
|
return ff_layout_async_handle_error_v4(task, state, clp,
|
|
|
|
lseg, idx);
|
|
|
|
default:
|
|
|
|
/* should never happen */
|
|
|
|
WARN_ON_ONCE(1);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_io_track_ds_error(struct pnfs_layout_segment *lseg,
|
|
|
|
int idx, u64 offset, u64 length,
|
2015-08-20 16:59:49 -06:00
|
|
|
u32 status, int opnum, int error)
|
2014-12-11 15:02:04 -07:00
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
|
|
|
int err;
|
|
|
|
|
2015-08-20 16:59:49 -06:00
|
|
|
if (status == 0) {
|
|
|
|
switch (error) {
|
|
|
|
case -ETIMEDOUT:
|
|
|
|
case -EPFNOSUPPORT:
|
|
|
|
case -EPROTONOSUPPORT:
|
|
|
|
case -EOPNOTSUPP:
|
|
|
|
case -ECONNREFUSED:
|
|
|
|
case -ECONNRESET:
|
|
|
|
case -EHOSTDOWN:
|
|
|
|
case -EHOSTUNREACH:
|
|
|
|
case -ENETUNREACH:
|
|
|
|
case -EADDRINUSE:
|
|
|
|
case -ENOBUFS:
|
|
|
|
case -EPIPE:
|
|
|
|
case -EPERM:
|
|
|
|
status = NFS4ERR_NXIO;
|
|
|
|
break;
|
|
|
|
case -EACCES:
|
|
|
|
status = NFS4ERR_ACCESS;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-12-07 15:31:38 -07:00
|
|
|
switch (status) {
|
|
|
|
case NFS4ERR_DELAY:
|
|
|
|
case NFS4ERR_GRACE:
|
|
|
|
return;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
mirror = FF_LAYOUT_COMP(lseg, idx);
|
|
|
|
err = ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout),
|
|
|
|
mirror, offset, length, status, opnum,
|
|
|
|
GFP_NOIO);
|
2015-09-02 16:15:11 -06:00
|
|
|
pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode, lseg);
|
2014-12-11 15:02:04 -07:00
|
|
|
dprintk("%s: err %d op %d status %u\n", __func__, err, opnum, status);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* NFS_PROTO call done callback routines */
|
|
|
|
static int ff_layout_read_done_cb(struct rpc_task *task,
|
|
|
|
struct nfs_pgio_header *hdr)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
trace_nfs4_pnfs_read(hdr, task->tk_status);
|
2015-08-20 16:59:49 -06:00
|
|
|
if (task->tk_status < 0)
|
2014-12-11 15:02:04 -07:00
|
|
|
ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx,
|
|
|
|
hdr->args.offset, hdr->args.count,
|
2015-08-20 16:59:49 -06:00
|
|
|
hdr->res.op_status, OP_READ,
|
|
|
|
task->tk_status);
|
2014-12-11 15:02:04 -07:00
|
|
|
err = ff_layout_async_handle_error(task, hdr->args.context->state,
|
|
|
|
hdr->ds_clp, hdr->lseg,
|
|
|
|
hdr->pgio_mirror_idx);
|
|
|
|
|
|
|
|
switch (err) {
|
|
|
|
case -NFS4ERR_RESET_TO_PNFS:
|
2015-11-02 08:11:17 -07:00
|
|
|
if (ff_layout_choose_best_ds_for_read(hdr->lseg,
|
|
|
|
hdr->pgio_mirror_idx + 1,
|
|
|
|
&hdr->pgio_mirror_idx))
|
|
|
|
goto out_eagain;
|
2014-12-11 15:02:04 -07:00
|
|
|
set_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE,
|
|
|
|
&hdr->lseg->pls_layout->plh_flags);
|
|
|
|
pnfs_read_resend_pnfs(hdr);
|
|
|
|
return task->tk_status;
|
|
|
|
case -NFS4ERR_RESET_TO_MDS:
|
|
|
|
ff_layout_reset_read(hdr);
|
|
|
|
return task->tk_status;
|
|
|
|
case -EAGAIN:
|
2015-11-02 08:11:17 -07:00
|
|
|
goto out_eagain;
|
2014-12-11 15:02:04 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2015-11-02 08:11:17 -07:00
|
|
|
out_eagain:
|
|
|
|
rpc_restart_call_prepare(task);
|
|
|
|
return -EAGAIN;
|
2014-12-11 15:02:04 -07:00
|
|
|
}
|
|
|
|
|
2015-06-26 12:51:32 -06:00
|
|
|
static bool
|
|
|
|
ff_layout_need_layoutcommit(struct pnfs_layout_segment *lseg)
|
|
|
|
{
|
|
|
|
return !(FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_LAYOUTCOMMIT);
|
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
/*
|
|
|
|
* We reference the rpc_cred of the first WRITE that triggers the need for
|
|
|
|
* a LAYOUTCOMMIT, and use it to send the layoutcommit compound.
|
|
|
|
* rfc5661 is not clear about which credential should be used.
|
|
|
|
*
|
|
|
|
* Flexlayout client should treat DS replied FILE_SYNC as DATA_SYNC, so
|
|
|
|
* to follow http://www.rfc-editor.org/errata_search.php?rfc=5661&eid=2751
|
|
|
|
* we always send layoutcommit after DS writes.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
ff_layout_set_layoutcommit(struct nfs_pgio_header *hdr)
|
|
|
|
{
|
2015-06-26 12:51:32 -06:00
|
|
|
if (!ff_layout_need_layoutcommit(hdr->lseg))
|
|
|
|
return;
|
|
|
|
|
2015-03-25 18:40:38 -06:00
|
|
|
pnfs_set_layoutcommit(hdr->inode, hdr->lseg,
|
|
|
|
hdr->mds_offset + hdr->res.count);
|
2014-12-11 15:02:04 -07:00
|
|
|
dprintk("%s inode %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino,
|
|
|
|
(unsigned long) NFS_I(hdr->inode)->layout->plh_lwb);
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool
|
|
|
|
ff_layout_reset_to_mds(struct pnfs_layout_segment *lseg, int idx)
|
|
|
|
{
|
|
|
|
/* No mirroring for now */
|
|
|
|
struct nfs4_deviceid_node *node = FF_LAYOUT_DEVID_NODE(lseg, idx);
|
|
|
|
|
|
|
|
return ff_layout_test_devid_unavailable(node);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_read_prepare_common(struct rpc_task *task,
|
|
|
|
struct nfs_pgio_header *hdr)
|
|
|
|
{
|
2015-08-24 16:22:28 -06:00
|
|
|
nfs4_ff_layout_stat_io_start_read(hdr->inode,
|
2015-06-23 05:51:59 -06:00
|
|
|
FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx),
|
2015-08-20 12:12:51 -06:00
|
|
|
hdr->args.count,
|
|
|
|
task->tk_start);
|
2015-06-23 05:51:59 -06:00
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) {
|
|
|
|
rpc_exit(task, -EIO);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
if (ff_layout_reset_to_mds(hdr->lseg, hdr->pgio_mirror_idx)) {
|
|
|
|
dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid);
|
|
|
|
if (ff_layout_has_available_ds(hdr->lseg))
|
|
|
|
pnfs_read_resend_pnfs(hdr);
|
|
|
|
else
|
|
|
|
ff_layout_reset_read(hdr);
|
|
|
|
rpc_exit(task, 0);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
hdr->pgio_done_cb = ff_layout_read_done_cb;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Call ops for the async read/write cases
|
|
|
|
* In the case of dense layouts, the offset needs to be reset to its
|
|
|
|
* original value.
|
|
|
|
*/
|
|
|
|
static void ff_layout_read_prepare_v3(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
if (ff_layout_read_prepare_common(task, hdr))
|
|
|
|
return;
|
|
|
|
|
|
|
|
rpc_call_start(task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_setup_sequence(struct nfs_client *ds_clp,
|
|
|
|
struct nfs4_sequence_args *args,
|
|
|
|
struct nfs4_sequence_res *res,
|
|
|
|
struct rpc_task *task)
|
|
|
|
{
|
|
|
|
if (ds_clp->cl_session)
|
|
|
|
return nfs41_setup_sequence(ds_clp->cl_session,
|
|
|
|
args,
|
|
|
|
res,
|
|
|
|
task);
|
|
|
|
return nfs40_setup_sequence(ds_clp->cl_slot_tbl,
|
|
|
|
args,
|
|
|
|
res,
|
|
|
|
task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
if (ff_layout_setup_sequence(hdr->ds_clp,
|
|
|
|
&hdr->args.seq_args,
|
|
|
|
&hdr->res.seq_res,
|
|
|
|
task))
|
|
|
|
return;
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
if (ff_layout_read_prepare_common(task, hdr))
|
|
|
|
return;
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
|
|
|
|
hdr->args.lock_context, FMODE_READ) == -EIO)
|
|
|
|
rpc_exit(task, -EIO); /* lost lock, terminate I/O */
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_read_call_done(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status);
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
nfs4_ff_layout_stat_io_end_read(task,
|
|
|
|
FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx),
|
|
|
|
hdr->args.count, hdr->res.count);
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
if (test_bit(NFS_IOHDR_REDO, &hdr->flags) &&
|
|
|
|
task->tk_status == 0) {
|
|
|
|
nfs4_sequence_done(task, &hdr->res.seq_res);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Note this may cause RPC to be resent */
|
|
|
|
hdr->mds_ops->rpc_call_done(task, hdr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_read_count_stats(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
rpc_count_iostats_metrics(task,
|
|
|
|
&NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_READ]);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_write_done_cb(struct rpc_task *task,
|
|
|
|
struct nfs_pgio_header *hdr)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
trace_nfs4_pnfs_write(hdr, task->tk_status);
|
2015-08-20 16:59:49 -06:00
|
|
|
if (task->tk_status < 0)
|
2014-12-11 15:02:04 -07:00
|
|
|
ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx,
|
|
|
|
hdr->args.offset, hdr->args.count,
|
2015-08-20 16:59:49 -06:00
|
|
|
hdr->res.op_status, OP_WRITE,
|
|
|
|
task->tk_status);
|
2014-12-11 15:02:04 -07:00
|
|
|
err = ff_layout_async_handle_error(task, hdr->args.context->state,
|
|
|
|
hdr->ds_clp, hdr->lseg,
|
|
|
|
hdr->pgio_mirror_idx);
|
|
|
|
|
|
|
|
switch (err) {
|
|
|
|
case -NFS4ERR_RESET_TO_PNFS:
|
2015-09-02 16:22:48 -06:00
|
|
|
pnfs_set_retry_layoutget(hdr->lseg->pls_layout);
|
|
|
|
ff_layout_reset_write(hdr, true);
|
|
|
|
return task->tk_status;
|
2014-12-11 15:02:04 -07:00
|
|
|
case -NFS4ERR_RESET_TO_MDS:
|
2015-09-02 16:22:48 -06:00
|
|
|
pnfs_clear_retry_layoutget(hdr->lseg->pls_layout);
|
|
|
|
ff_layout_reset_write(hdr, false);
|
2014-12-11 15:02:04 -07:00
|
|
|
return task->tk_status;
|
|
|
|
case -EAGAIN:
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (hdr->res.verf->committed == NFS_FILE_SYNC ||
|
|
|
|
hdr->res.verf->committed == NFS_DATA_SYNC)
|
|
|
|
ff_layout_set_layoutcommit(hdr);
|
|
|
|
|
2015-08-21 16:40:00 -06:00
|
|
|
/* zero out fattr since we don't care DS attr at all */
|
|
|
|
hdr->fattr.valid = 0;
|
2015-08-19 11:52:59 -06:00
|
|
|
if (task->tk_status >= 0)
|
|
|
|
nfs_writeback_update_inode(hdr);
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_commit_done_cb(struct rpc_task *task,
|
|
|
|
struct nfs_commit_data *data)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
trace_nfs4_pnfs_commit_ds(data, task->tk_status);
|
2015-08-20 16:59:49 -06:00
|
|
|
if (task->tk_status < 0)
|
2014-12-11 15:02:04 -07:00
|
|
|
ff_layout_io_track_ds_error(data->lseg, data->ds_commit_index,
|
|
|
|
data->args.offset, data->args.count,
|
2015-08-20 16:59:49 -06:00
|
|
|
data->res.op_status, OP_COMMIT,
|
|
|
|
task->tk_status);
|
2014-12-11 15:02:04 -07:00
|
|
|
err = ff_layout_async_handle_error(task, NULL, data->ds_clp,
|
|
|
|
data->lseg, data->ds_commit_index);
|
|
|
|
|
|
|
|
switch (err) {
|
|
|
|
case -NFS4ERR_RESET_TO_PNFS:
|
2015-09-02 16:22:48 -06:00
|
|
|
pnfs_set_retry_layoutget(data->lseg->pls_layout);
|
|
|
|
pnfs_generic_prepare_to_resend_writes(data);
|
|
|
|
return -EAGAIN;
|
2014-12-11 15:02:04 -07:00
|
|
|
case -NFS4ERR_RESET_TO_MDS:
|
2015-09-02 16:22:48 -06:00
|
|
|
pnfs_clear_retry_layoutget(data->lseg->pls_layout);
|
2014-12-11 15:02:04 -07:00
|
|
|
pnfs_generic_prepare_to_resend_writes(data);
|
|
|
|
return -EAGAIN;
|
|
|
|
case -EAGAIN:
|
|
|
|
rpc_restart_call_prepare(task);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
2015-06-26 12:51:32 -06:00
|
|
|
if (data->verf.committed == NFS_UNSTABLE
|
|
|
|
&& ff_layout_need_layoutcommit(data->lseg))
|
2015-03-25 18:40:38 -06:00
|
|
|
pnfs_set_layoutcommit(data->inode, data->lseg, data->lwb);
|
2014-12-11 15:02:04 -07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_write_prepare_common(struct rpc_task *task,
|
|
|
|
struct nfs_pgio_header *hdr)
|
|
|
|
{
|
2015-08-24 16:22:28 -06:00
|
|
|
nfs4_ff_layout_stat_io_start_write(hdr->inode,
|
2015-06-23 05:51:59 -06:00
|
|
|
FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx),
|
2015-08-20 12:12:51 -06:00
|
|
|
hdr->args.count,
|
|
|
|
task->tk_start);
|
2015-06-23 05:51:59 -06:00
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) {
|
|
|
|
rpc_exit(task, -EIO);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ff_layout_reset_to_mds(hdr->lseg, hdr->pgio_mirror_idx)) {
|
|
|
|
bool retry_pnfs;
|
|
|
|
|
|
|
|
retry_pnfs = ff_layout_has_available_ds(hdr->lseg);
|
|
|
|
dprintk("%s task %u reset io to %s\n", __func__,
|
|
|
|
task->tk_pid, retry_pnfs ? "pNFS" : "MDS");
|
|
|
|
ff_layout_reset_write(hdr, retry_pnfs);
|
|
|
|
rpc_exit(task, 0);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_write_prepare_v3(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
if (ff_layout_write_prepare_common(task, hdr))
|
|
|
|
return;
|
|
|
|
|
|
|
|
rpc_call_start(task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
if (ff_layout_setup_sequence(hdr->ds_clp,
|
|
|
|
&hdr->args.seq_args,
|
|
|
|
&hdr->res.seq_res,
|
|
|
|
task))
|
|
|
|
return;
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
if (ff_layout_write_prepare_common(task, hdr))
|
|
|
|
return;
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
|
|
|
|
hdr->args.lock_context, FMODE_WRITE) == -EIO)
|
|
|
|
rpc_exit(task, -EIO); /* lost lock, terminate I/O */
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_write_call_done(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
nfs4_ff_layout_stat_io_end_write(task,
|
|
|
|
FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx),
|
|
|
|
hdr->args.count, hdr->res.count,
|
|
|
|
hdr->res.verf->committed);
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
if (test_bit(NFS_IOHDR_REDO, &hdr->flags) &&
|
|
|
|
task->tk_status == 0) {
|
|
|
|
nfs4_sequence_done(task, &hdr->res.seq_res);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Note this may cause RPC to be resent */
|
|
|
|
hdr->mds_ops->rpc_call_done(task, hdr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_write_count_stats(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_pgio_header *hdr = data;
|
|
|
|
|
|
|
|
rpc_count_iostats_metrics(task,
|
|
|
|
&NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_WRITE]);
|
|
|
|
}
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
static void ff_layout_commit_prepare_common(struct rpc_task *task,
|
|
|
|
struct nfs_commit_data *cdata)
|
|
|
|
{
|
2015-08-24 16:22:28 -06:00
|
|
|
nfs4_ff_layout_stat_io_start_write(cdata->inode,
|
2015-06-23 05:51:59 -06:00
|
|
|
FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index),
|
2015-08-20 12:12:51 -06:00
|
|
|
0, task->tk_start);
|
2015-06-23 05:51:59 -06:00
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
static void ff_layout_commit_prepare_v3(struct rpc_task *task, void *data)
|
|
|
|
{
|
2015-06-23 05:51:59 -06:00
|
|
|
ff_layout_commit_prepare_common(task, data);
|
2014-12-11 15:02:04 -07:00
|
|
|
rpc_call_start(task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_commit_prepare_v4(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_commit_data *wdata = data;
|
|
|
|
|
2015-06-23 05:51:59 -06:00
|
|
|
if (ff_layout_setup_sequence(wdata->ds_clp,
|
2014-12-11 15:02:04 -07:00
|
|
|
&wdata->args.seq_args,
|
|
|
|
&wdata->res.seq_res,
|
2015-06-23 05:51:59 -06:00
|
|
|
task))
|
|
|
|
return;
|
|
|
|
ff_layout_commit_prepare_common(task, data);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_commit_done(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_commit_data *cdata = data;
|
|
|
|
struct nfs_page *req;
|
|
|
|
__u64 count = 0;
|
|
|
|
|
|
|
|
if (task->tk_status == 0) {
|
|
|
|
list_for_each_entry(req, &cdata->pages, wb_list)
|
|
|
|
count += req->wb_bytes;
|
|
|
|
}
|
|
|
|
|
|
|
|
nfs4_ff_layout_stat_io_end_write(task,
|
|
|
|
FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index),
|
|
|
|
count, count, NFS_FILE_SYNC);
|
|
|
|
|
|
|
|
pnfs_generic_write_commit_done(task, data);
|
2014-12-11 15:02:04 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static void ff_layout_commit_count_stats(struct rpc_task *task, void *data)
|
|
|
|
{
|
|
|
|
struct nfs_commit_data *cdata = data;
|
|
|
|
|
|
|
|
rpc_count_iostats_metrics(task,
|
|
|
|
&NFS_CLIENT(cdata->inode)->cl_metrics[NFSPROC4_CLNT_COMMIT]);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct rpc_call_ops ff_layout_read_call_ops_v3 = {
|
|
|
|
.rpc_call_prepare = ff_layout_read_prepare_v3,
|
|
|
|
.rpc_call_done = ff_layout_read_call_done,
|
|
|
|
.rpc_count_stats = ff_layout_read_count_stats,
|
|
|
|
.rpc_release = pnfs_generic_rw_release,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpc_call_ops ff_layout_read_call_ops_v4 = {
|
|
|
|
.rpc_call_prepare = ff_layout_read_prepare_v4,
|
|
|
|
.rpc_call_done = ff_layout_read_call_done,
|
|
|
|
.rpc_count_stats = ff_layout_read_count_stats,
|
|
|
|
.rpc_release = pnfs_generic_rw_release,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpc_call_ops ff_layout_write_call_ops_v3 = {
|
|
|
|
.rpc_call_prepare = ff_layout_write_prepare_v3,
|
|
|
|
.rpc_call_done = ff_layout_write_call_done,
|
|
|
|
.rpc_count_stats = ff_layout_write_count_stats,
|
|
|
|
.rpc_release = pnfs_generic_rw_release,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpc_call_ops ff_layout_write_call_ops_v4 = {
|
|
|
|
.rpc_call_prepare = ff_layout_write_prepare_v4,
|
|
|
|
.rpc_call_done = ff_layout_write_call_done,
|
|
|
|
.rpc_count_stats = ff_layout_write_count_stats,
|
|
|
|
.rpc_release = pnfs_generic_rw_release,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpc_call_ops ff_layout_commit_call_ops_v3 = {
|
|
|
|
.rpc_call_prepare = ff_layout_commit_prepare_v3,
|
2015-06-23 05:51:59 -06:00
|
|
|
.rpc_call_done = ff_layout_commit_done,
|
2014-12-11 15:02:04 -07:00
|
|
|
.rpc_count_stats = ff_layout_commit_count_stats,
|
|
|
|
.rpc_release = pnfs_generic_commit_release,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct rpc_call_ops ff_layout_commit_call_ops_v4 = {
|
|
|
|
.rpc_call_prepare = ff_layout_commit_prepare_v4,
|
2015-06-23 05:51:59 -06:00
|
|
|
.rpc_call_done = ff_layout_commit_done,
|
2014-12-11 15:02:04 -07:00
|
|
|
.rpc_count_stats = ff_layout_commit_count_stats,
|
|
|
|
.rpc_release = pnfs_generic_commit_release,
|
|
|
|
};
|
|
|
|
|
|
|
|
static enum pnfs_try_status
|
|
|
|
ff_layout_read_pagelist(struct nfs_pgio_header *hdr)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_segment *lseg = hdr->lseg;
|
|
|
|
struct nfs4_pnfs_ds *ds;
|
|
|
|
struct rpc_clnt *ds_clnt;
|
|
|
|
struct rpc_cred *ds_cred;
|
|
|
|
loff_t offset = hdr->args.offset;
|
|
|
|
u32 idx = hdr->pgio_mirror_idx;
|
|
|
|
int vers;
|
|
|
|
struct nfs_fh *fh;
|
|
|
|
|
|
|
|
dprintk("--> %s ino %lu pgbase %u req %Zu@%llu\n",
|
|
|
|
__func__, hdr->inode->i_ino,
|
|
|
|
hdr->args.pgbase, (size_t)hdr->args.count, offset);
|
|
|
|
|
|
|
|
ds = nfs4_ff_layout_prepare_ds(lseg, idx, false);
|
|
|
|
if (!ds)
|
|
|
|
goto out_failed;
|
|
|
|
|
|
|
|
ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp,
|
|
|
|
hdr->inode);
|
|
|
|
if (IS_ERR(ds_clnt))
|
|
|
|
goto out_failed;
|
|
|
|
|
|
|
|
ds_cred = ff_layout_get_ds_cred(lseg, idx, hdr->cred);
|
|
|
|
if (IS_ERR(ds_cred))
|
|
|
|
goto out_failed;
|
|
|
|
|
|
|
|
vers = nfs4_ff_layout_ds_version(lseg, idx);
|
|
|
|
|
|
|
|
dprintk("%s USE DS: %s cl_count %d vers %d\n", __func__,
|
|
|
|
ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count), vers);
|
|
|
|
|
|
|
|
atomic_inc(&ds->ds_clp->cl_count);
|
|
|
|
hdr->ds_clp = ds->ds_clp;
|
|
|
|
fh = nfs4_ff_layout_select_ds_fh(lseg, idx);
|
|
|
|
if (fh)
|
|
|
|
hdr->args.fh = fh;
|
|
|
|
/*
|
|
|
|
* Note that if we ever decide to split across DSes,
|
|
|
|
* then we may need to handle dense-like offsets.
|
|
|
|
*/
|
|
|
|
hdr->args.offset = offset;
|
|
|
|
hdr->mds_offset = offset;
|
|
|
|
|
|
|
|
/* Perform an asynchronous read to ds */
|
|
|
|
nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops,
|
|
|
|
vers == 3 ? &ff_layout_read_call_ops_v3 :
|
|
|
|
&ff_layout_read_call_ops_v4,
|
|
|
|
0, RPC_TASK_SOFTCONN);
|
|
|
|
|
|
|
|
return PNFS_ATTEMPTED;
|
|
|
|
|
|
|
|
out_failed:
|
|
|
|
if (ff_layout_has_available_ds(lseg))
|
|
|
|
return PNFS_TRY_AGAIN;
|
|
|
|
return PNFS_NOT_ATTEMPTED;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Perform async writes. */
|
|
|
|
static enum pnfs_try_status
|
|
|
|
ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_segment *lseg = hdr->lseg;
|
|
|
|
struct nfs4_pnfs_ds *ds;
|
|
|
|
struct rpc_clnt *ds_clnt;
|
|
|
|
struct rpc_cred *ds_cred;
|
|
|
|
loff_t offset = hdr->args.offset;
|
|
|
|
int vers;
|
|
|
|
struct nfs_fh *fh;
|
|
|
|
int idx = hdr->pgio_mirror_idx;
|
|
|
|
|
|
|
|
ds = nfs4_ff_layout_prepare_ds(lseg, idx, true);
|
|
|
|
if (!ds)
|
|
|
|
return PNFS_NOT_ATTEMPTED;
|
|
|
|
|
|
|
|
ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp,
|
|
|
|
hdr->inode);
|
|
|
|
if (IS_ERR(ds_clnt))
|
|
|
|
return PNFS_NOT_ATTEMPTED;
|
|
|
|
|
|
|
|
ds_cred = ff_layout_get_ds_cred(lseg, idx, hdr->cred);
|
|
|
|
if (IS_ERR(ds_cred))
|
|
|
|
return PNFS_NOT_ATTEMPTED;
|
|
|
|
|
|
|
|
vers = nfs4_ff_layout_ds_version(lseg, idx);
|
|
|
|
|
|
|
|
dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s cl_count %d vers %d\n",
|
|
|
|
__func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count,
|
|
|
|
offset, ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count),
|
|
|
|
vers);
|
|
|
|
|
|
|
|
hdr->pgio_done_cb = ff_layout_write_done_cb;
|
|
|
|
atomic_inc(&ds->ds_clp->cl_count);
|
|
|
|
hdr->ds_clp = ds->ds_clp;
|
|
|
|
hdr->ds_commit_idx = idx;
|
|
|
|
fh = nfs4_ff_layout_select_ds_fh(lseg, idx);
|
|
|
|
if (fh)
|
|
|
|
hdr->args.fh = fh;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Note that if we ever decide to split across DSes,
|
|
|
|
* then we may need to handle dense-like offsets.
|
|
|
|
*/
|
|
|
|
hdr->args.offset = offset;
|
|
|
|
|
|
|
|
/* Perform an asynchronous write */
|
|
|
|
nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops,
|
|
|
|
vers == 3 ? &ff_layout_write_call_ops_v3 :
|
|
|
|
&ff_layout_write_call_ops_v4,
|
|
|
|
sync, RPC_TASK_SOFTCONN);
|
|
|
|
return PNFS_ATTEMPTED;
|
|
|
|
}
|
|
|
|
|
|
|
|
static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i)
|
|
|
|
{
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct nfs_fh *
|
|
|
|
select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_segment *flseg = FF_LAYOUT_LSEG(lseg);
|
|
|
|
|
|
|
|
/* FIXME: Assume that there is only one NFS version available
|
|
|
|
* for the DS.
|
|
|
|
*/
|
|
|
|
return &flseg->mirror_array[i]->fh_versions[0];
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_segment *lseg = data->lseg;
|
|
|
|
struct nfs4_pnfs_ds *ds;
|
|
|
|
struct rpc_clnt *ds_clnt;
|
|
|
|
struct rpc_cred *ds_cred;
|
|
|
|
u32 idx;
|
|
|
|
int vers;
|
|
|
|
struct nfs_fh *fh;
|
|
|
|
|
|
|
|
idx = calc_ds_index_from_commit(lseg, data->ds_commit_index);
|
|
|
|
ds = nfs4_ff_layout_prepare_ds(lseg, idx, true);
|
|
|
|
if (!ds)
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
ds_clnt = nfs4_ff_find_or_create_ds_client(lseg, idx, ds->ds_clp,
|
|
|
|
data->inode);
|
|
|
|
if (IS_ERR(ds_clnt))
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
ds_cred = ff_layout_get_ds_cred(lseg, idx, data->cred);
|
|
|
|
if (IS_ERR(ds_cred))
|
|
|
|
goto out_err;
|
|
|
|
|
|
|
|
vers = nfs4_ff_layout_ds_version(lseg, idx);
|
|
|
|
|
|
|
|
dprintk("%s ino %lu, how %d cl_count %d vers %d\n", __func__,
|
|
|
|
data->inode->i_ino, how, atomic_read(&ds->ds_clp->cl_count),
|
|
|
|
vers);
|
|
|
|
data->commit_done_cb = ff_layout_commit_done_cb;
|
|
|
|
data->cred = ds_cred;
|
|
|
|
atomic_inc(&ds->ds_clp->cl_count);
|
|
|
|
data->ds_clp = ds->ds_clp;
|
|
|
|
fh = select_ds_fh_from_commit(lseg, data->ds_commit_index);
|
|
|
|
if (fh)
|
|
|
|
data->args.fh = fh;
|
2015-06-23 05:51:59 -06:00
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
return nfs_initiate_commit(ds_clnt, data, ds->ds_clp->rpc_ops,
|
|
|
|
vers == 3 ? &ff_layout_commit_call_ops_v3 :
|
|
|
|
&ff_layout_commit_call_ops_v4,
|
|
|
|
how, RPC_TASK_SOFTCONN);
|
|
|
|
out_err:
|
|
|
|
pnfs_generic_prepare_to_resend_writes(data);
|
|
|
|
pnfs_generic_commit_release(data);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ff_layout_commit_pagelist(struct inode *inode, struct list_head *mds_pages,
|
|
|
|
int how, struct nfs_commit_info *cinfo)
|
|
|
|
{
|
|
|
|
return pnfs_generic_commit_pagelist(inode, mds_pages, how, cinfo,
|
|
|
|
ff_layout_initiate_commit);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pnfs_ds_commit_info *
|
|
|
|
ff_layout_get_ds_info(struct inode *inode)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_hdr *layout = NFS_I(inode)->layout;
|
|
|
|
|
|
|
|
if (layout == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return &FF_LAYOUT_FROM_HDR(layout)->commit_info;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2015-03-09 15:25:14 -06:00
|
|
|
ff_layout_free_deviceid_node(struct nfs4_deviceid_node *d)
|
2014-12-11 15:02:04 -07:00
|
|
|
{
|
|
|
|
nfs4_ff_layout_free_deviceid(container_of(d, struct nfs4_ff_layout_ds,
|
|
|
|
id_node));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ff_layout_encode_ioerr(struct nfs4_flexfile_layout *flo,
|
|
|
|
struct xdr_stream *xdr,
|
|
|
|
const struct nfs4_layoutreturn_args *args)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_hdr *hdr = &flo->generic_hdr;
|
|
|
|
__be32 *start;
|
|
|
|
int count = 0, ret = 0;
|
|
|
|
|
|
|
|
start = xdr_reserve_space(xdr, 4);
|
|
|
|
if (unlikely(!start))
|
|
|
|
return -E2BIG;
|
|
|
|
|
|
|
|
/* This assume we always return _ALL_ layouts */
|
|
|
|
spin_lock(&hdr->plh_inode->i_lock);
|
|
|
|
ret = ff_layout_encode_ds_ioerr(flo, xdr, &count, &args->range);
|
|
|
|
spin_unlock(&hdr->plh_inode->i_lock);
|
|
|
|
|
|
|
|
*start = cpu_to_be32(count);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* report nothing for now */
|
|
|
|
static void ff_layout_encode_iostats(struct nfs4_flexfile_layout *flo,
|
|
|
|
struct xdr_stream *xdr,
|
|
|
|
const struct nfs4_layoutreturn_args *args)
|
|
|
|
{
|
|
|
|
__be32 *p;
|
|
|
|
|
|
|
|
p = xdr_reserve_space(xdr, 4);
|
|
|
|
if (likely(p))
|
|
|
|
*p = cpu_to_be32(0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct nfs4_deviceid_node *
|
|
|
|
ff_layout_alloc_deviceid_node(struct nfs_server *server,
|
|
|
|
struct pnfs_device *pdev, gfp_t gfp_flags)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_ds *dsaddr;
|
|
|
|
|
|
|
|
dsaddr = nfs4_ff_alloc_deviceid_node(server, pdev, gfp_flags);
|
|
|
|
if (!dsaddr)
|
|
|
|
return NULL;
|
|
|
|
return &dsaddr->id_node;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_encode_layoutreturn(struct pnfs_layout_hdr *lo,
|
|
|
|
struct xdr_stream *xdr,
|
|
|
|
const struct nfs4_layoutreturn_args *args)
|
|
|
|
{
|
|
|
|
struct nfs4_flexfile_layout *flo = FF_LAYOUT_FROM_HDR(lo);
|
|
|
|
__be32 *start;
|
|
|
|
|
|
|
|
dprintk("%s: Begin\n", __func__);
|
|
|
|
start = xdr_reserve_space(xdr, 4);
|
|
|
|
BUG_ON(!start);
|
|
|
|
|
|
|
|
if (ff_layout_encode_ioerr(flo, xdr, args))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
ff_layout_encode_iostats(flo, xdr, args);
|
|
|
|
out:
|
|
|
|
*start = cpu_to_be32((xdr->p - start - 1) * 4);
|
|
|
|
dprintk("%s: Return\n", __func__);
|
|
|
|
}
|
|
|
|
|
2015-06-23 05:52:02 -06:00
|
|
|
static int
|
|
|
|
ff_layout_ntop4(const struct sockaddr *sap, char *buf, const size_t buflen)
|
|
|
|
{
|
|
|
|
const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
|
|
|
|
|
|
|
|
return snprintf(buf, buflen, "%pI4", &sin->sin_addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static size_t
|
|
|
|
ff_layout_ntop6_noscopeid(const struct sockaddr *sap, char *buf,
|
|
|
|
const int buflen)
|
|
|
|
{
|
|
|
|
const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
|
|
|
|
const struct in6_addr *addr = &sin6->sin6_addr;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* RFC 4291, Section 2.2.2
|
|
|
|
*
|
|
|
|
* Shorthanded ANY address
|
|
|
|
*/
|
|
|
|
if (ipv6_addr_any(addr))
|
|
|
|
return snprintf(buf, buflen, "::");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* RFC 4291, Section 2.2.2
|
|
|
|
*
|
|
|
|
* Shorthanded loopback address
|
|
|
|
*/
|
|
|
|
if (ipv6_addr_loopback(addr))
|
|
|
|
return snprintf(buf, buflen, "::1");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* RFC 4291, Section 2.2.3
|
|
|
|
*
|
|
|
|
* Special presentation address format for mapped v4
|
|
|
|
* addresses.
|
|
|
|
*/
|
|
|
|
if (ipv6_addr_v4mapped(addr))
|
|
|
|
return snprintf(buf, buflen, "::ffff:%pI4",
|
|
|
|
&addr->s6_addr32[3]);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* RFC 4291, Section 2.2.1
|
|
|
|
*/
|
|
|
|
return snprintf(buf, buflen, "%pI6c", addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Derived from rpc_sockaddr2uaddr */
|
|
|
|
static void
|
|
|
|
ff_layout_encode_netaddr(struct xdr_stream *xdr, struct nfs4_pnfs_ds_addr *da)
|
|
|
|
{
|
|
|
|
struct sockaddr *sap = (struct sockaddr *)&da->da_addr;
|
|
|
|
char portbuf[RPCBIND_MAXUADDRPLEN];
|
|
|
|
char addrbuf[RPCBIND_MAXUADDRLEN];
|
|
|
|
char *netid;
|
|
|
|
unsigned short port;
|
|
|
|
int len, netid_len;
|
|
|
|
__be32 *p;
|
|
|
|
|
|
|
|
switch (sap->sa_family) {
|
|
|
|
case AF_INET:
|
|
|
|
if (ff_layout_ntop4(sap, addrbuf, sizeof(addrbuf)) == 0)
|
|
|
|
return;
|
|
|
|
port = ntohs(((struct sockaddr_in *)sap)->sin_port);
|
|
|
|
netid = "tcp";
|
|
|
|
netid_len = 3;
|
|
|
|
break;
|
|
|
|
case AF_INET6:
|
|
|
|
if (ff_layout_ntop6_noscopeid(sap, addrbuf, sizeof(addrbuf)) == 0)
|
|
|
|
return;
|
|
|
|
port = ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
|
|
|
|
netid = "tcp6";
|
|
|
|
netid_len = 4;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* we only support tcp and tcp6 */
|
|
|
|
WARN_ON_ONCE(1);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
snprintf(portbuf, sizeof(portbuf), ".%u.%u", port >> 8, port & 0xff);
|
|
|
|
len = strlcat(addrbuf, portbuf, sizeof(addrbuf));
|
|
|
|
|
|
|
|
p = xdr_reserve_space(xdr, 4 + netid_len);
|
|
|
|
xdr_encode_opaque(p, netid, netid_len);
|
|
|
|
|
|
|
|
p = xdr_reserve_space(xdr, 4 + len);
|
|
|
|
xdr_encode_opaque(p, addrbuf, len);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_encode_nfstime(struct xdr_stream *xdr,
|
|
|
|
ktime_t t)
|
|
|
|
{
|
|
|
|
struct timespec64 ts;
|
|
|
|
__be32 *p;
|
|
|
|
|
|
|
|
p = xdr_reserve_space(xdr, 12);
|
|
|
|
ts = ktime_to_timespec64(t);
|
|
|
|
p = xdr_encode_hyper(p, ts.tv_sec);
|
|
|
|
*p++ = cpu_to_be32(ts.tv_nsec);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_encode_io_latency(struct xdr_stream *xdr,
|
|
|
|
struct nfs4_ff_io_stat *stat)
|
|
|
|
{
|
|
|
|
__be32 *p;
|
|
|
|
|
|
|
|
p = xdr_reserve_space(xdr, 5 * 8);
|
|
|
|
p = xdr_encode_hyper(p, stat->ops_requested);
|
|
|
|
p = xdr_encode_hyper(p, stat->bytes_requested);
|
|
|
|
p = xdr_encode_hyper(p, stat->ops_completed);
|
|
|
|
p = xdr_encode_hyper(p, stat->bytes_completed);
|
|
|
|
p = xdr_encode_hyper(p, stat->bytes_not_delivered);
|
|
|
|
ff_layout_encode_nfstime(xdr, stat->total_busy_time);
|
|
|
|
ff_layout_encode_nfstime(xdr, stat->aggregate_completion_time);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ff_layout_encode_layoutstats(struct xdr_stream *xdr,
|
|
|
|
struct nfs42_layoutstat_args *args,
|
|
|
|
struct nfs42_layoutstat_devinfo *devinfo)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_mirror *mirror = devinfo->layout_private;
|
|
|
|
struct nfs4_pnfs_ds_addr *da;
|
|
|
|
struct nfs4_pnfs_ds *ds = mirror->mirror_ds->ds;
|
|
|
|
struct nfs_fh *fh = &mirror->fh_versions[0];
|
|
|
|
__be32 *p, *start;
|
|
|
|
|
|
|
|
da = list_first_entry(&ds->ds_addrs, struct nfs4_pnfs_ds_addr, da_node);
|
|
|
|
dprintk("%s: DS %s: encoding address %s\n",
|
|
|
|
__func__, ds->ds_remotestr, da->da_remotestr);
|
|
|
|
/* layoutupdate length */
|
|
|
|
start = xdr_reserve_space(xdr, 4);
|
|
|
|
/* netaddr4 */
|
|
|
|
ff_layout_encode_netaddr(xdr, da);
|
|
|
|
/* nfs_fh4 */
|
|
|
|
p = xdr_reserve_space(xdr, 4 + fh->size);
|
|
|
|
xdr_encode_opaque(p, fh->data, fh->size);
|
|
|
|
/* ff_io_latency4 read */
|
|
|
|
spin_lock(&mirror->lock);
|
|
|
|
ff_layout_encode_io_latency(xdr, &mirror->read_stat.io_stat);
|
|
|
|
/* ff_io_latency4 write */
|
|
|
|
ff_layout_encode_io_latency(xdr, &mirror->write_stat.io_stat);
|
|
|
|
spin_unlock(&mirror->lock);
|
|
|
|
/* nfstime4 */
|
|
|
|
ff_layout_encode_nfstime(xdr, ktime_sub(ktime_get(), mirror->start_time));
|
|
|
|
/* bool */
|
|
|
|
p = xdr_reserve_space(xdr, 4);
|
|
|
|
*p = cpu_to_be32(false);
|
|
|
|
|
|
|
|
*start = cpu_to_be32((xdr->p - start - 1) * 4);
|
|
|
|
}
|
|
|
|
|
2015-08-24 18:03:17 -06:00
|
|
|
static int
|
2015-06-23 05:52:01 -06:00
|
|
|
ff_layout_mirror_prepare_stats(struct nfs42_layoutstat_args *args,
|
2015-08-24 18:03:17 -06:00
|
|
|
struct pnfs_layout_hdr *lo,
|
|
|
|
int dev_limit)
|
2015-06-23 05:52:01 -06:00
|
|
|
{
|
2015-08-24 18:03:17 -06:00
|
|
|
struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(lo);
|
2015-06-23 05:52:01 -06:00
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
|
|
|
struct nfs4_deviceid_node *dev;
|
|
|
|
struct nfs42_layoutstat_devinfo *devinfo;
|
2015-08-24 18:03:17 -06:00
|
|
|
int i = 0;
|
2015-06-23 05:52:01 -06:00
|
|
|
|
2015-08-24 18:03:17 -06:00
|
|
|
list_for_each_entry(mirror, &ff_layout->mirrors, mirrors) {
|
|
|
|
if (i >= dev_limit)
|
2015-06-23 05:52:01 -06:00
|
|
|
break;
|
2015-08-24 18:03:17 -06:00
|
|
|
if (!mirror->mirror_ds)
|
2015-06-23 05:52:02 -06:00
|
|
|
continue;
|
2015-08-24 18:03:17 -06:00
|
|
|
/* mirror refcount put in cleanup_layoutstats */
|
|
|
|
if (!atomic_inc_not_zero(&mirror->ref))
|
|
|
|
continue;
|
|
|
|
dev = &mirror->mirror_ds->id_node;
|
|
|
|
devinfo = &args->devinfo[i];
|
2015-06-23 05:52:01 -06:00
|
|
|
memcpy(&devinfo->dev_id, &dev->deviceid, NFS4_DEVICEID4_SIZE);
|
2015-08-24 18:03:17 -06:00
|
|
|
devinfo->offset = 0;
|
|
|
|
devinfo->length = NFS4_MAX_UINT64;
|
2015-08-10 02:47:32 -06:00
|
|
|
devinfo->read_count = mirror->read_stat.io_stat.ops_completed;
|
2015-06-23 05:52:01 -06:00
|
|
|
devinfo->read_bytes = mirror->read_stat.io_stat.bytes_completed;
|
2015-08-10 02:47:32 -06:00
|
|
|
devinfo->write_count = mirror->write_stat.io_stat.ops_completed;
|
2015-06-23 05:52:01 -06:00
|
|
|
devinfo->write_bytes = mirror->write_stat.io_stat.bytes_completed;
|
|
|
|
devinfo->layout_type = LAYOUT_FLEX_FILES;
|
2015-06-23 05:52:02 -06:00
|
|
|
devinfo->layoutstats_encode = ff_layout_encode_layoutstats;
|
|
|
|
devinfo->layout_private = mirror;
|
2015-06-23 05:52:01 -06:00
|
|
|
|
2015-08-24 18:03:17 -06:00
|
|
|
i++;
|
2015-06-23 05:52:01 -06:00
|
|
|
}
|
2015-08-24 18:03:17 -06:00
|
|
|
return i;
|
2015-06-23 05:52:01 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ff_layout_prepare_layoutstats(struct nfs42_layoutstat_args *args)
|
|
|
|
{
|
2015-08-24 18:03:17 -06:00
|
|
|
struct nfs4_flexfile_layout *ff_layout;
|
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
2015-06-23 05:52:01 -06:00
|
|
|
int dev_count = 0;
|
|
|
|
|
|
|
|
spin_lock(&args->inode->i_lock);
|
2015-08-24 18:03:17 -06:00
|
|
|
ff_layout = FF_LAYOUT_FROM_HDR(NFS_I(args->inode)->layout);
|
|
|
|
list_for_each_entry(mirror, &ff_layout->mirrors, mirrors) {
|
|
|
|
if (atomic_read(&mirror->ref) != 0)
|
|
|
|
dev_count ++;
|
2015-06-23 05:52:01 -06:00
|
|
|
}
|
|
|
|
spin_unlock(&args->inode->i_lock);
|
|
|
|
/* For now, send at most PNFS_LAYOUTSTATS_MAXDEV statistics */
|
|
|
|
if (dev_count > PNFS_LAYOUTSTATS_MAXDEV) {
|
|
|
|
dprintk("%s: truncating devinfo to limit (%d:%d)\n",
|
|
|
|
__func__, dev_count, PNFS_LAYOUTSTATS_MAXDEV);
|
|
|
|
dev_count = PNFS_LAYOUTSTATS_MAXDEV;
|
|
|
|
}
|
2015-08-24 18:03:17 -06:00
|
|
|
args->devinfo = kmalloc_array(dev_count, sizeof(*args->devinfo), GFP_NOIO);
|
2015-06-23 05:52:01 -06:00
|
|
|
if (!args->devinfo)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
spin_lock(&args->inode->i_lock);
|
2015-08-24 18:03:17 -06:00
|
|
|
args->num_dev = ff_layout_mirror_prepare_stats(args,
|
|
|
|
&ff_layout->generic_hdr, dev_count);
|
2015-06-23 05:52:01 -06:00
|
|
|
spin_unlock(&args->inode->i_lock);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-06-23 05:52:02 -06:00
|
|
|
static void
|
|
|
|
ff_layout_cleanup_layoutstats(struct nfs42_layoutstat_data *data)
|
|
|
|
{
|
|
|
|
struct nfs4_ff_layout_mirror *mirror;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < data->args.num_dev; i++) {
|
|
|
|
mirror = data->args.devinfo[i].layout_private;
|
|
|
|
data->args.devinfo[i].layout_private = NULL;
|
2015-08-24 16:22:28 -06:00
|
|
|
ff_layout_put_mirror(mirror);
|
2015-06-23 05:52:02 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-12-11 15:02:04 -07:00
|
|
|
static struct pnfs_layoutdriver_type flexfilelayout_type = {
|
|
|
|
.id = LAYOUT_FLEX_FILES,
|
|
|
|
.name = "LAYOUT_FLEX_FILES",
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.alloc_layout_hdr = ff_layout_alloc_layout_hdr,
|
|
|
|
.free_layout_hdr = ff_layout_free_layout_hdr,
|
|
|
|
.alloc_lseg = ff_layout_alloc_lseg,
|
|
|
|
.free_lseg = ff_layout_free_lseg,
|
2015-08-25 15:38:25 -06:00
|
|
|
.add_lseg = ff_layout_add_lseg,
|
2014-12-11 15:02:04 -07:00
|
|
|
.pg_read_ops = &ff_layout_pg_read_ops,
|
|
|
|
.pg_write_ops = &ff_layout_pg_write_ops,
|
|
|
|
.get_ds_info = ff_layout_get_ds_info,
|
2015-03-09 15:25:14 -06:00
|
|
|
.free_deviceid_node = ff_layout_free_deviceid_node,
|
2015-02-17 15:58:15 -07:00
|
|
|
.mark_request_commit = pnfs_layout_mark_request_commit,
|
2014-12-11 15:02:04 -07:00
|
|
|
.clear_request_commit = pnfs_generic_clear_request_commit,
|
|
|
|
.scan_commit_lists = pnfs_generic_scan_commit_lists,
|
|
|
|
.recover_commit_reqs = pnfs_generic_recover_commit_reqs,
|
|
|
|
.commit_pagelist = ff_layout_commit_pagelist,
|
|
|
|
.read_pagelist = ff_layout_read_pagelist,
|
|
|
|
.write_pagelist = ff_layout_write_pagelist,
|
|
|
|
.alloc_deviceid_node = ff_layout_alloc_deviceid_node,
|
|
|
|
.encode_layoutreturn = ff_layout_encode_layoutreturn,
|
2015-03-25 12:14:42 -06:00
|
|
|
.sync = pnfs_nfs_generic_sync,
|
2015-06-23 05:52:01 -06:00
|
|
|
.prepare_layoutstats = ff_layout_prepare_layoutstats,
|
2015-06-23 05:52:02 -06:00
|
|
|
.cleanup_layoutstats = ff_layout_cleanup_layoutstats,
|
2014-12-11 15:02:04 -07:00
|
|
|
};
|
|
|
|
|
|
|
|
static int __init nfs4flexfilelayout_init(void)
|
|
|
|
{
|
|
|
|
printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Registering...\n",
|
|
|
|
__func__);
|
|
|
|
return pnfs_register_layoutdriver(&flexfilelayout_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit nfs4flexfilelayout_exit(void)
|
|
|
|
{
|
|
|
|
printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Unregistering...\n",
|
|
|
|
__func__);
|
|
|
|
pnfs_unregister_layoutdriver(&flexfilelayout_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
MODULE_ALIAS("nfs-layouttype4-4");
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_DESCRIPTION("The NFSv4 flexfile layout driver");
|
|
|
|
|
|
|
|
module_init(nfs4flexfilelayout_init);
|
|
|
|
module_exit(nfs4flexfilelayout_exit);
|