diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2023-05-01 09:20:08 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-06-16 18:24:13 -0400 |
| commit | 4c2c845bdc9a3443ce805460a75242923b0c5ab5 (patch) | |
| tree | fe372a6c49f93c06a9168e1190e407f1b1d7a09f /Documentation/admin-guide | |
| parent | 1d9a943898533e83f20370c0e1448d606627522e (diff) | |
| download | lwn-4c2c845bdc9a3443ce805460a75242923b0c5ab5.tar.gz lwn-4c2c845bdc9a3443ce805460a75242923b0c5ab5.zip | |
dm flakey: introduce random_read_corrupt and random_write_corrupt options
The random_read_corrupt and random_write_corrupt options corrupt a
random byte in a bio with the provided probability. The corruption
only happens in the "down" interval.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-flakey.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-flakey.rst b/Documentation/admin-guide/device-mapper/dm-flakey.rst index f7104c01b0f7..f967c5fea219 100644 --- a/Documentation/admin-guide/device-mapper/dm-flakey.rst +++ b/Documentation/admin-guide/device-mapper/dm-flakey.rst @@ -67,6 +67,16 @@ Optional feature parameters: Perform the replacement only if bio->bi_opf has all the selected flags set. + random_read_corrupt <probability> + During <down interval>, replace random byte in a read bio + with a random value. probability is an integer between + 0 and 1000000000 meaning 0% to 100% probability of corruption. + + random_write_corrupt <probability> + During <down interval>, replace random byte in a write bio + with a random value. probability is an integer between + 0 and 1000000000 meaning 0% to 100% probability of corruption. + Examples: Replaces the 32nd byte of READ bios with the value 1:: |