linux/Documentation/device-mapper
Sami Tolvanen 65ff5b7ddf dm verity: add error handling modes for corrupted blocks
Add device specific modes to dm-verity to specify how corrupted
blocks should be handled.  The following modes are defined:

  - DM_VERITY_MODE_EIO is the default behavior, where reading a
    corrupted block results in -EIO.

  - DM_VERITY_MODE_LOGGING only logs corrupted blocks, but does
    not block the read.

  - DM_VERITY_MODE_RESTART calls kernel_restart when a corrupted
    block is discovered.

In addition, each mode sends a uevent to notify userspace of
corruption and to allow further recovery actions.

The driver defaults to previous behavior (DM_VERITY_MODE_EIO)
and other modes can be enabled with an additional parameter to
the verity table.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-04-15 12:10:22 -04:00
..
cache-policies.txt dm cache policy mq: simplify ability to promote sequential IO to the cache 2014-11-10 15:25:30 -05:00
cache.txt dm thin: ensure user takes action to validate data and metadata consistency 2014-03-05 15:25:35 -05:00
delay.txt
dm-crypt.txt dm crypt: add 'submit_from_crypt_cpus' option 2015-02-16 11:11:15 -05:00
dm-flakey.txt dm flakey: add corrupt_bio_byte feature 2011-08-02 12:32:06 +01:00
dm-io.txt
dm-log.txt dm log userspace: fix comment hyphens 2011-10-31 20:21:22 +00:00
dm-queue-length.txt dm mpath: add queue length load balancer 2009-06-22 10:12:27 +01:00
dm-raid.txt MD: Remember the last sync operation that was performed 2013-06-26 12:38:24 +10:00
dm-service-time.txt Fix common misspellings 2011-03-31 11:26:23 -03:00
dm-uevent.txt
era.txt dm: add era target 2014-03-27 16:56:23 -04:00
kcopyd.txt
linear.txt
persistent-data.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
snapshot.txt dm: document when snapshot has finished merging 2010-03-06 02:29:56 +00:00
statistics.txt dm: add statistics support 2013-09-05 20:46:06 -04:00
striped.txt dm stripe: support for non power of 2 chunksize 2012-07-27 15:08:01 +01:00
switch.txt dm switch: fix Documentation to use plain text 2015-03-31 12:03:49 -04:00
thin-provisioning.txt dm thin: remove stale 'trim' message documentation 2015-04-15 12:10:22 -04:00
verity.txt dm verity: add error handling modes for corrupted blocks 2015-04-15 12:10:22 -04:00
zero.txt