path: root/Documentation
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authorMike Snitzer <snitzer@redhat.com>2015-07-15 11:42:59 -0400
committerMike Snitzer <snitzer@redhat.com>2015-07-16 10:23:50 -0400
commit255eac20054e90ac7a52b3e179b61de1168a8fe6 (patch)
tree0e3cba0cdb7a09930b1931ece156c32c52e16dad /Documentation
parente4c78e210daea17f82f12037005df225e22189b9 (diff)
dm cache: display 'needs_check' in status if it is set
There is currently no way to see that the needs_check flag has been set in the metadata. Display 'needs_check' in the cache status if it is set in the cache metadata. Also, update cache documentation. Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'Documentation')
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/device-mapper/cache.txt b/Documentation/device-mapper/cache.txt
index 82960cffbad3..785eab87aa71 100644
--- a/Documentation/device-mapper/cache.txt
+++ b/Documentation/device-mapper/cache.txt
@@ -258,6 +258,12 @@ cache metadata mode : ro if read-only, rw if read-write
no further I/O will be permitted and the status will just
contain the string 'Fail'. The userspace recovery tools
should then be used.
+needs_check : 'needs_check' if set, '-' if not set
+ A metadata operation has failed, resulting in the needs_check
+ flag being set in the metadata's superblock. The metadata
+ device must be deactivated and checked/repaired before the
+ cache can be made fully operational again. '-' indicates
+ needs_check is not set.