diff options
| author | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:41 +1000 |
|---|---|---|
| committer | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:41 +1000 |
| commit | 72a23c211e4587859d5bf61ac4962d76e593fb02 (patch) | |
| tree | b35b554d7eb9c4b3a2cbc4d9378d362e5e56e44f /Documentation/md.txt | |
| parent | 0fd62b861eac7d2dea9b7e939953b20f37186ea1 (diff) | |
| download | lwn-72a23c211e4587859d5bf61ac4962d76e593fb02.tar.gz lwn-72a23c211e4587859d5bf61ac4962d76e593fb02.zip | |
Make sure all changes to md/sync_action are notified.
When the 'resync' thread starts or stops, when we explicitly
set sync_action, or when we determine that there is definitely nothing
to do, we notify sync_action.
To stop "sync_action" from occasionally showing the wrong value,
we introduce a new flags - MD_RECOVERY_RECOVER - to say that a
recovery is probably needed or happening, and we make sure
that we set MD_RECOVERY_RUNNING before clearing MD_RECOVERY_NEEDED.
Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'Documentation/md.txt')
| -rw-r--r-- | Documentation/md.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt index dca97ba4944a..c05bfb55659e 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt @@ -386,6 +386,12 @@ also have 'check' and 'repair' will start the appropriate process providing the current state is 'idle'. + This file responds to select/poll. Any important change in the value + triggers a poll event. Sometimes the value will briefly be + "recover" if a recovery seems to be needed, but cannot be + achieved. In that case, the transition to "recover" isn't + notified, but the transition away is. + mismatch_count When performing 'check' and 'repair', and possibly when performing 'resync', md will count the number of errors that are |