md: Update documentation for sync_min and sync_max entries

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

View File

@ -552,6 +552,16 @@ also have
within the array where IO will be blocked. This is currently
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
personality module that manages it.