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| author | Namhyung Kim <namhyung@gmail.com> | 2011-07-28 11:31:48 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2011-07-28 11:31:48 +1000 |
| commit | 0b7d83865cb7a60b1768212c1e60b8fd7c280506 (patch) | |
| tree | 6a2bd09b219504e4ae8649d77eff487191667d24 /Documentation | |
| parent | de393cdea66cbd63c90725663f400c76faf1b255 (diff) | |
| download | talos-obmc-linux-0b7d83865cb7a60b1768212c1e60b8fd7c280506.tar.gz talos-obmc-linux-0b7d83865cb7a60b1768212c1e60b8fd7c280506.zip | |
md: update documentation for md/rdev/state sysfs interface
Previous patches in the bad block series extended behavior of
rdev's 'state' interface but lacked documentation update.
Fix it.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/md.txt | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt index 923a6bddce7c..fc94770f44ab 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt @@ -360,18 +360,20 @@ Each directory contains: A file recording the current state of the device in the array which can be a comma separated list of faulty - device has been kicked from active use due to - a detected fault + a detected fault or it has unacknowledged bad + blocks in_sync - device is a fully in-sync member of the array writemostly - device will only be subject to read requests if there are no other options. This applies only to raid1 arrays. - blocked - device has failed, metadata is "external", - and the failure hasn't been acknowledged yet. + blocked - device has failed, and the failure hasn't been + acknowledged yet by the metadata handler. Writes that would write to this device if it were not faulty are blocked. spare - device is working, but not a full member. This includes spares that are in the process of being recovered to + write_error - device has ever seen a write error. This list may grow in future. This can be written to. Writing "faulty" simulates a failure on the device. @@ -379,9 +381,11 @@ Each directory contains: Writing "writemostly" sets the writemostly flag. Writing "-writemostly" clears the writemostly flag. Writing "blocked" sets the "blocked" flag. - Writing "-blocked" clears the "blocked" flag and allows writes - to complete. + Writing "-blocked" clears the "blocked" flags and allows writes + to complete and possibly simulates an error. Writing "in_sync" sets the in_sync flag. + Writing "write_error" sets writeerrorseen flag. + Writing "-write_error" clears writeerrorseen flag. This file responds to select/poll. Any change to 'faulty' or 'blocked' causes an event. |
