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| author | Bernd Schubert <bs@q-leap.de> | 2008-05-23 13:04:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-24 09:56:10 -0700 |
| commit | 90b08710e41a07d4ff0fb8940dcce3a552991a56 (patch) | |
| tree | 8e45d1c6d9b4020099fd36781065bf8b8fdb76e4 /include/linux/raid | |
| parent | 4f54b0e9485644a3c5fca2ae43bcbe7376825747 (diff) | |
| download | kernel_samsung_espresso10-90b08710e41a07d4ff0fb8940dcce3a552991a56.zip kernel_samsung_espresso10-90b08710e41a07d4ff0fb8940dcce3a552991a56.tar.gz kernel_samsung_espresso10-90b08710e41a07d4ff0fb8940dcce3a552991a56.tar.bz2 | |
md: allow parallel resync of md-devices.
In some configurations, a raid6 resync can be limited by CPU speed
(Calculating P and Q and moving data) rather than by device speed. In
these cases there is nothing to be gained byt serialising resync of arrays
that share a device, and doing the resync in parallel can provide benefit.
So add a sysfs tunable to flag an array as being allowed to resync in
parallel with other arrays that use (a different part of) the same device.
Signed-off-by: Bernd Schubert <bs@q-leap.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/md_k.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 812ffa5..a6d7ab6 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -180,6 +180,9 @@ struct mddev_s int sync_speed_min; int sync_speed_max; + /* resync even though the same disks are shared among md-devices */ + int parallel_resync; + int ok_start_degraded; /* recovery/resync flags * NEEDED: we might need to start a resync/recover |