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authorBernd Schubert <bs@q-leap.de>2008-05-23 13:04:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-24 09:56:10 -0700
commit90b08710e41a07d4ff0fb8940dcce3a552991a56 (patch)
tree8e45d1c6d9b4020099fd36781065bf8b8fdb76e4 /usr
parent4f54b0e9485644a3c5fca2ae43bcbe7376825747 (diff)
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>
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