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md: Update documentation for sync_min and sync_max entries

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linux/Documentation/md.txt is missing description for sync_min and
sync_max entries.
This patch adds description for sync_min and sync_max entries.

Signed-off-by: Roman Ovchinnikov <coolthecold@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
CoolCold 2011-04-20 15:40:01 +10:00 committed by NeilBrown
parent fee68723cf
commit 28a8397852
1 changed files with 10 additions and 0 deletions
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Documentation/md.txt
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@ -552,6 +552,16 @@ also have
within the array where IO will be blocked. This is currently within the array where IO will be blocked. This is currently
only supported for raid4/5/6. only supported for raid4/5/6.
sync_min
sync_max
The two values, given as numbers of sectors, indicate a range
withing the array where 'check'/'repair' will operate. Must be
a multiple of chunk_size. When it reaches "sync_max" it will
pause, rather than complete.
You can use 'select' or 'poll' on "sync_completed" to wait for
that number to reach sync_max. Then you can either increase
"sync_max", or can write 'idle' to "sync_action".
Each active md device may also have attributes specific to the Each active md device may also have attributes specific to the
personality module that manages it. personality module that manages it.