linux/Documentation/device-mapper
Mike Snitzer b0d3cc011e dm snapshot: add new persistent store option to support overflow
Commit 76c44f6d80 introduced the possibly for "Overflow" to be reported
by the snapshot device's status.  Older userspace (e.g. lvm2) does not
handle the "Overflow" status response.

Fix this incompatibility by requiring newer userspace code, that can
cope with "Overflow", request the persistent store with overflow support
by using "PO" (Persistent with Overflow) for the snapshot store type.

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Fixes: 76c44f6d80 ("dm snapshot: don't invalidate on-disk image on snapshot write overflow")
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-10-09 16:57:03 -04:00
..
cache-policies.txt dm cache: switch the "default" cache replacement policy from mq to smq 2015-06-17 12:40:38 -04:00
cache.txt dm cache: display 'needs_check' in status if it is set 2015-07-16 10:23:50 -04:00
delay.txt
dm-crypt.txt dm crypt: update URLs to new cryptsetup project page 2015-04-15 12:10:24 -04:00
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-raid.txt dm raid: document RAID 4/5/6 discard support 2015-08-31 15:05:31 -04:00
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
log-writes.txt dm: add log writes target 2015-04-15 12:10:24 -04:00
persistent-data.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
snapshot.txt dm snapshot: add new persistent store option to support overflow 2015-10-09 16:57:03 -04:00
statistics.txt dm stats: report precise_timestamps and histogram in @stats_list output 2015-08-18 17:20:03 -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: display 'needs_check' in status if it is set 2015-07-16 10:23:50 -04:00
verity.txt dm crypt: update URLs to new cryptsetup project page 2015-04-15 12:10:24 -04:00
zero.txt