Joe Thornber f4cf4b1b2d dm thin: switch to read only mode if a mapping insert fails ...

commit fafc7a815e upstream.

Switch the thin pool to read-only mode when dm_thin_insert_block() fails
since there is little reason to expect the cause of the failure to be
resolved without further action by user space.

This issue was noticed with the device-mapper-test-suite using:
dmtest run --suite thin-provisioning -n /exhausting_metadata_space_causes_fail_mode/

The quantity of errors logged in this case must be reduced.

before patch:

device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: dm_thin_insert_block() failed
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: space map metadata: unable to allocate new metadata block
<snip ... these repeat for a long while ... >
device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: space map common: dm_tm_shadow_block() failed
device-mapper: thin: 253:4: no free metadata space available.
device-mapper: thin: 253:4: switching pool to read-only mode

after patch:

device-mapper: space map metadata: unable to allocate new metadata block
device-mapper: thin: 253:4: dm_thin_insert_block() failed: error = -28
device-mapper: thin: 253:4: switching pool to read-only mode

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-12-20 07:45:11 -08:00

..

bcache

bcache: Fixed incorrect order of arguments to bio_alloc_bioset()

2013-11-13 12:05:30 +09:00

persistent-data

dm space map metadata: return on failure in sm_metadata_new_block

2013-12-20 07:45:11 -08:00

bitmap.c

md: use set_bit_le and clear_bit_le

2013-04-24 11:42:41 +10:00

bitmap.h

md/bitmap: record the space available for the bitmap in the superblock.

2012-05-22 13:55:34 +10:00

dm-bio-prison.c

dm: add cache target

2013-03-01 22:45:51 +00:00

dm-bio-prison.h

dm: add cache target

2013-03-01 22:45:51 +00:00

dm-bio-record.h

…

dm-bufio.c

dm bufio: initialize read-only module parameters

2013-12-20 07:45:10 -08:00

dm-bufio.h

dm bufio: prefetch

2012-03-28 18:41:29 +01:00

dm-cache-block-types.h

dm: add cache target

2013-03-01 22:45:51 +00:00

dm-cache-metadata.c

dm cache: replace memcpy with struct assignment

2013-05-10 14:37:18 +01:00

dm-cache-metadata.h

dm cache: policy ignore hints if generated by different version

2013-03-20 17:21:28 +00:00

dm-cache-policy-cleaner.c

dm cache: policy change version from string to integer set

2013-03-20 17:21:27 +00:00

dm-cache-policy-internal.h

dm cache: policy change version from string to integer set

2013-03-20 17:21:27 +00:00

dm-cache-policy-mq.c

dm cache: policy change version from string to integer set

2013-03-20 17:21:27 +00:00

dm-cache-policy.c

dm cache: policy change version from string to integer set

2013-03-20 17:21:27 +00:00

dm-cache-policy.h

dm cache policy: fix description of lookup fn

2013-05-10 14:37:17 +01:00

dm-cache-target.c

dm cache: fix a race condition between queuing new migrations and quiescing for a shutdown

2013-12-04 10:56:43 -08:00

dm-crypt.c

block: Convert some code to bio_for_each_segment_all()

2013-03-23 14:26:30 -07:00

dm-delay.c

dm delay: fix a possible deadlock due to shared workqueue

2013-12-20 07:45:11 -08:00

dm-exception-store.c

dm: replace simple_strtoul

2012-07-27 15:07:59 +01:00

dm-exception-store.h

…

dm-flakey.c

dm: rename request variables to bios

2013-03-01 22:45:47 +00:00

dm-io.c

dm kcopyd: add WRITE SAME support to dm_kcopyd_zero

2012-12-21 20:23:37 +00:00

dm-ioctl.c

dm ioctl: set noio flag to avoid __vmalloc deadlock

2013-08-04 16:51:02 +08:00

dm-kcopyd.c

dm kcopyd: introduce configurable throttling

2013-03-01 22:45:49 +00:00

dm-linear.c

dm: rename request variables to bios

2013-03-01 22:45:47 +00:00

dm-log-userspace-base.c

…

dm-log-userspace-transfer.c

connector/userns: replace netlink uses of cap_raised() with capable()

2012-05-10 23:21:39 -04:00

dm-log-userspace-transfer.h

…

dm-log.c

dm: use memweight()

2012-07-30 17:25:16 -07:00

dm-mpath.c

dm mpath: fix race condition between multipath_dtr and pg_init_done

2013-12-04 10:56:41 -08:00

dm-mpath.h

…

dm-path-selector.c

…

dm-path-selector.h

…

dm-queue-length.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-raid1.c

block: Use bio_sectors() more consistently

2013-03-23 14:15:30 -07:00

dm-raid.c

dm-raid: silence compiler warning on rebuilds_per_group.

2013-10-05 07:13:11 -07:00

dm-region-hash.c

dm raid1: fix crash with mirror recovery and discard

2012-07-20 14:25:03 +01:00

dm-round-robin.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-service-time.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-snap-persistent.c

dm snapshot: fix data corruption

2013-11-04 04:31:06 -08:00

dm-snap-transient.c

…

dm-snap.c

dm snapshot: avoid snapshot space leak on crash

2013-12-20 07:45:10 -08:00

dm-stripe.c

dm stripe: fix regression in stripe_width calculation

2013-05-10 14:37:14 +01:00

dm-sysfs.c

…

dm-table.c

dm table: fail dm_table_create on dm_round_up overflow

2013-12-20 07:45:11 -08:00

dm-target.c

dm: rename request variables to bios

2013-03-01 22:45:47 +00:00

dm-thin-metadata.c

dm thin: generate event when metadata threshold passed

2013-05-10 14:37:21 +01:00

dm-thin-metadata.h

dm thin: generate event when metadata threshold passed

2013-05-10 14:37:21 +01:00

dm-thin.c

dm thin: switch to read only mode if a mapping insert fails

2013-12-20 07:45:11 -08:00

dm-uevent.c

…

dm-uevent.h

…

dm-verity.c

dm verity: fix inability to use a few specific devices sizes

2013-08-04 16:51:02 +08:00

dm-zero.c

dm: rename request variables to bios

2013-03-01 22:45:47 +00:00

dm.c

dm mpath: disable WRITE SAME if it fails

2013-10-05 07:13:11 -07:00

dm.h

dm: introduce per_bio_data

2012-12-21 20:23:38 +00:00

faulty.c

block: Add bio_end_sector()

2013-03-23 14:15:29 -07:00

Kconfig

bcache: A block layer cache

2013-03-23 16:11:31 -07:00

linear.c

block: Add bio_end_sector()

2013-03-23 14:15:29 -07:00

linear.h

…

Makefile

bcache: A block layer cache

2013-03-23 16:11:31 -07:00

md.c

md: fix calculation of stacking limits on level change.

2013-12-04 10:57:15 -08:00

md.h

MD: Export 'md_reap_sync_thread' function

2013-04-24 11:42:43 +10:00

multipath.c

MD: change the parameter of md thread

2012-10-11 13:34:00 +11:00

multipath.h

…

raid0.c

block: Change bio_split() to respect the current value of bi_idx

2013-03-23 14:15:30 -07:00

raid0.h

md: add proper merge_bvec handling to RAID0 and Linear.

2012-03-19 12:46:39 +11:00

raid1.c

md: Fix skipping recovery for read-only arrays.

2013-11-13 12:05:32 +09:00

raid1.h

md/raid1: prevent merging too large request

2012-07-31 10:03:53 +10:00

raid5.c

raid5: avoid finding "discard" stripe

2013-11-13 12:05:31 +09:00

raid5.h

md/raid5: fix interaction of 'replace' and 'recovery'.

2013-08-04 16:50:54 +08:00

raid10.c

md: Fix skipping recovery for read-only arrays.

2013-11-13 12:05:32 +09:00

raid10.h

MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 1)

2013-02-26 11:55:30 +11:00