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alistair23-linux/drivers/md
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Nikos Tsironis 7431b7835f dm: add clone target 
Add the dm-clone target, which allows cloning of arbitrary block
devices.

dm-clone produces a one-to-one copy of an existing, read-only source
device into a writable destination device: It presents a virtual block
device which makes all data appear immediately, and redirects reads and
writes accordingly.

The main use case of dm-clone is to clone a potentially remote,
high-latency, read-only, archival-type block device into a writable,
fast, primary-type device for fast, low-latency I/O. The cloned device
is visible/mountable immediately and the copy of the source device to
the destination device happens in the background, in parallel with user
I/O.

When the cloning completes, the dm-clone table can be removed altogether
and be replaced, e.g., by a linear table, mapping directly to the
destination device.

For further information and examples of how to use dm-clone, please read
Documentation/admin-guide/device-mapper/dm-clone.rst

Suggested-by: Vangelis Koukis <vkoukis@arrikto.com>
Co-developed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
 		2019-09-12 09:32:31 -04:00
..
bcache bcache: Revert "bcache: use sysfs_match_string() instead of __sysfs_match_string()" 2019-08-09 07:37:33 -06:00
persistent-data dm space map common: remove check for impossible sm_find_free() return value 2019-08-26 15:39:53 -04:00
Kconfig dm: add clone target 2019-09-12 09:32:31 -04:00
Makefile dm: add clone target 2019-09-12 09:32:31 -04:00
dm-bio-prison-v1.c dm: adjust structure members to improve alignment 2018-06-08 11:53:14 -04:00
dm-bio-prison-v1.h block: switch bios to blk_status_t 2017-06-09 09:27:32 -06:00
dm-bio-prison-v2.c dm: adjust structure members to improve alignment 2018-06-08 11:53:14 -04:00
dm-bio-prison-v2.h dm bio prison v2: new interface for the bio prison 2017-03-07 11:30:16 -05:00
dm-bio-record.h block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
dm-bufio.c Revert "dm bufio: fix deadlock with loop device" 2019-08-15 15:57:39 -04:00
dm-builtin.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dm-cache-background-tracker.c dm cache background tracker: fix sparse warning 2018-04-30 15:40:40 -04:00
dm-cache-background-tracker.h dm cache: significant rework to leverage dm-bio-prison-v2 2017-03-07 13:28:31 -05:00
dm-cache-block-types.h linux: drop __bitwise__ everywhere 2016-12-16 00:13:41 +02:00
dm-cache-metadata.c dm cache metadata: Fix loading discard bitset 2019-04-18 16:18:25 -04:00
dm-cache-metadata.h dm cache: significant rework to leverage dm-bio-prison-v2 2017-03-07 13:28:31 -05:00
dm-cache-policy-internal.h dm cache: significant rework to leverage dm-bio-prison-v2 2017-03-07 13:28:31 -05:00
dm-cache-policy-smq.c dm: remove unnecessary unlikely() around WARN_ON_ONCE() 2018-10-16 14:34:59 -04:00
dm-cache-policy.c
…
dm-cache-policy.h dm cache: significant rework to leverage dm-bio-prison-v2 2017-03-07 13:28:31 -05:00
dm-cache-target.c dm cache: add support for discard passdown to the origin device 2019-03-05 14:53:52 -05:00
dm-clone-metadata.c dm: add clone target 2019-09-12 09:32:31 -04:00
dm-clone-metadata.h dm: add clone target 2019-09-12 09:32:31 -04:00
dm-clone-target.c dm: add clone target 2019-09-12 09:32:31 -04:00
dm-core.h dm: disable DISCARD if the underlying storage no longer supports it 2019-04-04 15:33:59 -04:00
dm-crypt.c dm crypt: omit parsing of the encapsulated cipher 2019-09-03 16:46:16 -04:00
dm-delay.c dm delay: fix a crash when invalid device is specified 2019-04-26 11:29:32 -04:00
dm-dust.c dm dust: use dust block size for badblocklist index 2019-08-21 11:27:17 -04:00
dm-era-target.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
dm-exception-store.c
…
dm-exception-store.h - Improve DM snapshot target's scalability by using finer grained 2019-05-16 15:55:48 -07:00
dm-flakey.c block: Kill gfp_t argument of blkdev_report_zones() 2019-07-11 20:04:37 -06:00
dm-init.c docs: device-mapper: move it to the admin-guide 2019-07-15 11:03:01 -03:00
dm-integrity.c dm integrity: fix a crash due to BUG_ON in __journal_read_write() 2019-08-15 16:01:57 -04:00
dm-io.c dm: Use kzalloc for all structs with embedded biosets/mempools 2018-06-05 08:47:43 -06:00
dm-ioctl.c dm: make dm_table_find_target return NULL 2019-08-23 10:13:12 -04:00
dm-kcopyd.c dm kcopyd: always complete failed jobs 2019-08-15 15:57:39 -04:00
dm-linear.c block: Kill gfp_t argument of blkdev_report_zones() 2019-07-11 20:04:37 -06:00
dm-log-userspace-base.c dm: convert to bioset_init()/mempool_init() 2018-05-30 15:33:32 -06:00
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c dm log writes: fix incorrect comment about the logged sequence example 2019-07-09 14:13:33 -04:00
dm-log.c block,fs: use REQ_* flags directly 2016-11-01 09:43:26 -06:00
dm-mpath.c dm mpath: always free attached_handler_name in parse_path() 2019-04-30 16:51:30 -04:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
…
dm-queue-length.c dm mpath selector: more evenly distribute ties 2018-01-29 13:44:58 -05:00
dm-raid.c dm raid: fix updating of max_discard_sectors limit 2019-09-11 16:18:23 -04:00
dm-raid1.c dm raid1: use struct_size() with kzalloc() 2019-08-26 11:05:32 -04:00
dm-region-hash.c - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
dm-round-robin.c dm round robin: revert "use percpu 'repeat_count' and 'current_path'" 2017-02-17 00:54:09 -05:00
dm-rq.c dm: update stale comment in end_clone_bio() 2019-07-09 14:14:20 -04:00
dm-rq.h dm: remove unused _rq_tio_cache and _rq_cache 2019-03-05 14:48:50 -05:00
dm-service-time.c dm mpath selector: more evenly distribute ties 2018-01-29 13:44:58 -05:00
dm-snap-persistent.c dm bufio: move dm-bufio.h to include/linux/ 2018-04-03 15:04:23 -04:00
dm-snap-transient.c
…
dm-snap.c dm snapshot: fix oversights in optional discard support 2019-07-17 11:12:30 -04:00
dm-stats.c dm stats: use struct_size() helper 2019-09-04 09:39:22 -04:00
dm-stats.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dm-stripe.c dax: Introduce a ->copy_to_iter dax operation 2018-05-22 23:18:31 -07:00
dm-switch.c dm switch: use struct_size() in kzalloc() 2019-03-05 14:48:51 -05:00
dm-sysfs.c dm: remove legacy request-based IO path 2018-10-11 11:36:09 -04:00
dm-table.c dm: make dm_table_find_target return NULL 2019-08-23 10:13:12 -04:00
dm-target.c dm mpath: fix missing call of path selector type->end_io 2019-04-25 15:38:52 -04:00
dm-thin-metadata.c dm thin metadata: check if in fail_io mode when setting needs_check 2019-07-02 15:50:08 -04:00
dm-thin-metadata.h dm thin: fix passdown_double_checking_shared_status() 2019-01-15 16:10:41 -05:00
dm-thin.c dm thin: add sanity checks to thin-pool and external snapshot creation 2019-03-05 14:53:49 -05:00
dm-uevent.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dm-uevent.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
dm-unstripe.c dm: Check for device sector overflow if CONFIG_LBDAF is not set 2018-12-18 09:02:26 -05:00
dm-verity-fec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dm-verity-fec.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dm-verity-target.c dm verity: add root hash pkcs#7 signature verification 2019-08-23 10:13:14 -04:00
dm-verity-verify-sig.c dm verity: add root hash pkcs#7 signature verification 2019-08-23 10:13:14 -04:00
dm-verity-verify-sig.h dm verity: add root hash pkcs#7 signature verification 2019-08-23 10:13:14 -04:00
dm-verity.h dm verity: add root hash pkcs#7 signature verification 2019-08-23 10:13:14 -04:00
dm-writecache.c dm writecache: skip writecache_wait for pmem mode 2019-09-05 13:22:05 -04:00
dm-zero.c dm: don't return errnos from ->map 2017-06-09 09:27:32 -06:00
dm-zoned-metadata.c dm zoned: fix potential NULL dereference in dmz_do_reclaim() 2019-08-21 11:29:30 -04:00
dm-zoned-reclaim.c dm zoned: fix a few typos 2019-08-15 15:57:43 -04:00
dm-zoned-target.c dm zoned: fix invalid memory access 2019-08-26 10:33:58 -04:00
dm-zoned.h dm zoned: add SPDX license identifiers 2019-08-15 15:57:42 -04:00
dm.c dm: make dm_table_find_target return NULL 2019-08-23 10:13:12 -04:00
dm.h dm: make dm_table_find_target return NULL 2019-08-23 10:13:12 -04:00
md-bitmap.c md-bitmap: create and destroy wb_info_pool with the change of bitmap 2019-06-20 16:36:00 -07:00
md-bitmap.h md: Avoid namespace collision with bitmap API 2018-08-01 15:49:39 -07:00
md-cluster.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45 2019-05-24 17:27:12 +02:00
md-cluster.h md-cluster: introduce resync_info_get interface for sanity check 2018-10-18 09:36:35 -07:00
md-faulty.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
md-linear.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
md-linear.h Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2017-11-14 16:07:26 -08:00
md-multipath.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
md-multipath.h md: convert to bioset_init()/mempool_init() 2018-05-30 15:33:32 -06:00
md.c Merge branch 'for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 2019-07-14 16:17:18 -07:00
md.h md: introduce mddev_create/destroy_wb_pool for the change of member device 2019-06-20 16:36:00 -07:00
raid0.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
raid0.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
raid1-10.c md: raid1-10: Unify r{1,10}bio_pool_free 2019-06-15 01:37:35 -06:00
raid1.c md/raid1: Fix a warning message in remove_wb() 2019-06-26 12:18:48 -07:00
raid1.h md: convert to bioset_init()/mempool_init() 2018-05-30 15:33:32 -06:00
raid5-cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
raid5-log.h raid5: set write hint for PPL 2019-03-12 10:15:18 -07:00
raid5-ppl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
raid5.c block: remove the bi_phys_segments field in struct bio 2019-06-20 10:29:22 -06:00
raid5.h md: convert to kvmalloc 2019-03-12 10:04:02 -07:00
raid10.c md/raid10: read balance chooses idlest disk for SSD 2019-06-15 01:37:35 -06:00
raid10.h md: convert to bioset_init()/mempool_init() 2018-05-30 15:33:32 -06:00