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drbd: Implemented flags for the resize packet 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
hifive-unleashed-5.1
Philipp Reisner 2010-03-24 17:11:33 +01:00
parent 02d9a94bbb
commit e89b591c3a
4 changed files with 25 additions and 18 deletions
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14
drivers/block/drbd/drbd_int.h
View File

@ -481,7 +481,8 @@ struct p_sizes {
u64 u_size; /* user requested size */
u64 c_size; /* current exported size */
u32 max_segment_size; /* Maximal size of a BIO */
u32 queue_order_type;
u16 queue_order_type; /* not yet implemented in DRBD*/
u16 dds_flags; /* use enum dds_flags here. */
} __packed;
struct p_state {
@ -1081,6 +1082,11 @@ enum chg_state_flags {
CS_ORDERED = CS_WAIT_COMPLETE + CS_SERIALIZE,
};
enum dds_flags {
DDSF_FORCED = 1,
DDSF_NO_RESYNC = 2, /* Do not run a resync for the new space */
};
extern void drbd_init_set_defaults(struct drbd_conf *mdev);
extern int drbd_change_state(struct drbd_conf *mdev, enum chg_state_flags f,
union drbd_state mask, union drbd_state val);
@ -1113,7 +1119,7 @@ extern int drbd_send_protocol(struct drbd_conf *mdev);
extern int drbd_send_uuids(struct drbd_conf *mdev);
extern int drbd_send_uuids_skip_initial_sync(struct drbd_conf *mdev);
extern int drbd_send_sync_uuid(struct drbd_conf *mdev, u64 val);
extern int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply);
extern int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply, enum dds_flags flags);
extern int _drbd_send_state(struct drbd_conf *mdev);
extern int drbd_send_state(struct drbd_conf *mdev);
extern int _drbd_send_cmd(struct drbd_conf *mdev, struct socket *sock,
@ -1382,10 +1388,6 @@ extern void drbd_suspend_io(struct drbd_conf *mdev);
extern void drbd_resume_io(struct drbd_conf *mdev);
extern char *ppsize(char *buf, unsigned long long size);
extern sector_t drbd_new_dev_size(struct drbd_conf *, struct drbd_backing_dev *, int);
enum dds_flags {
DDSF_FORCED = 1,
DDSF_NO_RESYNC = 2, /* Do not run a resync for the new space */
};
enum determine_dev_size { dev_size_error = -1, unchanged = 0, shrunk = 1, grew = 2 };
extern enum determine_dev_size drbd_determin_dev_size(struct drbd_conf *, enum dds_flags) __must_hold(local);
extern void resync_after_online_grow(struct drbd_conf *);

8
drivers/block/drbd/drbd_main.c
View File

@ -1240,7 +1240,7 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
os.disk == D_ATTACHING && ns.disk == D_NEGOTIATING) {
kfree(mdev->p_uuid); /* We expect to receive up-to-date UUIDs soon. */
mdev->p_uuid = NULL; /* ...to not use the old ones in the mean time */
drbd_send_sizes(mdev, 0); /* to start sync... */
drbd_send_sizes(mdev, 0, 0); /* to start sync... */
drbd_send_uuids(mdev);
drbd_send_state(mdev);
}
@ -1763,7 +1763,7 @@ int drbd_send_sync_uuid(struct drbd_conf *mdev, u64 val)
(struct p_header *)&p, sizeof(p));
}
int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply)
int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply, enum dds_flags flags)
{
struct p_sizes p;
sector_t d_size, u_size;
@ -1775,7 +1775,6 @@ int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply)
d_size = drbd_get_max_capacity(mdev->ldev);
u_size = mdev->ldev->dc.disk_size;
q_order_type = drbd_queue_order_type(mdev);
p.queue_order_type = cpu_to_be32(drbd_queue_order_type(mdev));
put_ldev(mdev);
} else {
d_size = 0;
@ -1787,7 +1786,8 @@ int drbd_send_sizes(struct drbd_conf *mdev, int trigger_reply)
p.u_size = cpu_to_be64(u_size);
p.c_size = cpu_to_be64(trigger_reply ? 0 : drbd_get_capacity(mdev->this_bdev));
p.max_segment_size = cpu_to_be32(queue_max_segment_size(mdev->rq_queue));
p.queue_order_type = cpu_to_be32(q_order_type);
p.queue_order_type = cpu_to_be16(q_order_type);
p.dds_flags = cpu_to_be16(flags);
ok = drbd_send_cmd(mdev, USE_DATA_SOCKET, P_SIZES,
(struct p_header *)&p, sizeof(p));

2
drivers/block/drbd/drbd_nl.c
View File

@ -1521,7 +1521,7 @@ static int drbd_nl_resize(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
set_bit(RESIZE_PENDING, &mdev->flags);
drbd_send_uuids(mdev);
drbd_send_sizes(mdev, 1);
drbd_send_sizes(mdev, 1, 0);
}
fail:

19
drivers/block/drbd/drbd_receiver.c
View File

@ -902,7 +902,7 @@ retry:
if (!drbd_send_protocol(mdev))
return -1;
drbd_send_sync_param(mdev, &mdev->sync_conf);
drbd_send_sizes(mdev, 0);
drbd_send_sizes(mdev, 0, 0);
drbd_send_uuids(mdev);
drbd_send_state(mdev);
clear_bit(USE_DEGR_WFC_T, &mdev->flags);
@ -2866,6 +2866,7 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
unsigned int max_seg_s;
sector_t p_size, p_usize, my_usize;
int ldsc = 0; /* local disk size changed */
enum dds_flags ddsf;
ERR_IF(h->length != (sizeof(*p)-sizeof(*h))) return FALSE;
if (drbd_recv(mdev, h->payload, h->length) != h->length)
@ -2921,8 +2922,9 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
}
#undef min_not_zero
ddsf = be16_to_cpu(p->dds_flags);
if (get_ldev(mdev)) {
dd = drbd_determin_dev_size(mdev, 0);
dd = drbd_determin_dev_size(mdev, ddsf);
put_ldev(mdev);
if (dd == dev_size_error)
return FALSE;
@ -2942,7 +2944,7 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
if (max_seg_s != queue_max_segment_size(mdev->rq_queue))
drbd_setup_queue_param(mdev, max_seg_s);
drbd_setup_order_type(mdev, be32_to_cpu(p->queue_order_type));
drbd_setup_order_type(mdev, be16_to_cpu(p->queue_order_type));
put_ldev(mdev);
}
@ -2951,14 +2953,17 @@ static int receive_sizes(struct drbd_conf *mdev, struct p_header *h)
drbd_get_capacity(mdev->this_bdev) || ldsc) {
/* we have different sizes, probably peer
* needs to know my new size... */
drbd_send_sizes(mdev, 0);
drbd_send_sizes(mdev, 0, ddsf);
}
if (test_and_clear_bit(RESIZE_PENDING, &mdev->flags) ||
(dd == grew && mdev->state.conn == C_CONNECTED)) {
if (mdev->state.pdsk >= D_INCONSISTENT &&
mdev->state.disk >= D_INCONSISTENT)
resync_after_online_grow(mdev);
else
mdev->state.disk >= D_INCONSISTENT) {
if (ddsf & DDSF_NO_RESYNC)
dev_info(DEV, "Resync of new storage suppressed with --assume-clean\n");
else
resync_after_online_grow(mdev);
} else
set_bit(RESYNC_AFTER_NEG, &mdev->flags);
}
}