diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-25 20:51:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-25 20:51:44 -0700 |
| commit | 44bbd7ac2658eb1118342493026ef141e259b739 (patch) | |
| tree | a804d3503e48ee8b2bd0dd3c40235e482a75a512 /Documentation | |
| parent | 24c6d02fe8c34bc958aa4c464efc1cc10d43e29d (diff) | |
| parent | 29915202006c2e7bafe81348eb498ff9a724ac61 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
dm stripe: implement merge method
dm mpath: allow table load with no priority groups
dm mpath: fail message ioctl if specified path is not valid
dm ioctl: add flag to wipe buffers for secure data
dm ioctl: prepare for crypt key wiping
dm crypt: wipe keys string immediately after key is set
dm: add flakey target
dm: fix opening log and cow devices for read only tables
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/device-mapper/dm-flakey.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/device-mapper/dm-flakey.txt b/Documentation/device-mapper/dm-flakey.txt new file mode 100644 index 00000000000..c8efdfd19a6 --- /dev/null +++ b/Documentation/device-mapper/dm-flakey.txt @@ -0,0 +1,17 @@ +dm-flakey +========= + +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. + +Starting from the time the table is loaded, the device is available for +<up interval> seconds, then returns errors for <down interval> seconds, +and then this cycle repeats. + +Parameters: <dev path> <offset> <up interval> <down interval> + <dev path>: Full pathname to the underlying block-device, or a + "major:minor" device-number. + <offset>: Starting sector within the device. + <up interval>: Number of seconds device is available. + <down interval>: Number of seconds device returns errors. |