15 Jan, 2012
1 commit
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A logical volume can map to just part of underlying physical volume.
In this case, it must be treated like a partition.Based on a patch from Alasdair G Kergon.
Cc: Alasdair G Kergon
Cc: dm-devel@redhat.com
Signed-off-by: Paolo Bonzini
Signed-off-by: Linus Torvalds
26 Sep, 2011
1 commit
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If no arguments were provided to the corrupt_bio_byte feature an error
should be returned immediately.Reported-by: Zdenek Kabelac
Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon
02 Aug, 2011
4 commits
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Add corrupt_bio_byte feature to simulate corruption by overwriting a byte at a
specified position with a specified value during intervals when the device is
"down".Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon -
Add 'drop_writes' option to drop writes silently while the
device is 'down'. Reads are not touched.Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon -
Add the ability to specify arbitrary feature flags when creating a
flakey target. This code uses the same target argument helpers that
the multipath target does.Also remove the superfluous 'dm-flakey' prefixes from the error messages,
as they already contain the prefix 'flakey'.Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon -
Use dm_target_offset() and support discards.
Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon
24 Mar, 2011
1 commit
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This target is the same as the linear target except that it returns I/O
errors periodically. It's been found useful in simulating failing
devices for testing purposes.I needed a dm target to do some failure testing on btrfs's raid code, and
Mike pointed me at this.Signed-off-by: Josef Bacik
Signed-off-by: Alasdair G Kergon
