diff options
| author | Heinz Mauelshagen <heinzm@redhat.com> | 2016-04-29 18:59:56 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-05-13 09:03:51 -0400 |
| commit | 4c9971ca6a172e70f52a7f9b6796e843c3f70293 (patch) | |
| tree | 67beaa03c6bad723dcc555d507cdb9d4ccb9f902 | |
| parent | 72f6d8d8c9b3592da7109cad3415559864ee9f2d (diff) | |
dm raid: make sure no feature flags are set in metadata
Given we don't yet support any feature flags in the dm-raid ondisk
metadata (see: 'features' member of 'struct dm_raid_superblock'),
add a check to ensure no flags are actually set, if any features are
set reject the activation of the RAID mapping.
This is to prevent possible data corruption in case of a kernel
downgrade when there'll potentially be feature flags set by a future
dm-raid target.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>