dm thin: don't allow messages to be sent to a pool target in READ_ONLY or FAIL mode

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commit 2a7eaea02b upstream.

You can't modify the metadata in these modes.  It's better to fail these
messages immediately than let the block-manager deny write locks on
metadata blocks.  Otherwise these failed metadata changes will trigger
'needs_check' to get set in the metadata superblock -- requiring repair
using the thin_check utility.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

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Joe Thornber 2015-01-26 11:38:21 +00:00 • committed by Luis Henriques

parent 2d9af2b8ac

commit 3deb5859ee

1 changed files with 6 additions and 0 deletions

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drivers/md/dm-thin.c

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