From: Rory Jaffe <rsjaffe@gmail.com>
To: linux-raid <linux-raid@vger.kernel.org>
Subject: Resync intermittently writes to spare drives, waking them up
Date: Wed, 13 Apr 2011 14:10:46 -0700 [thread overview]
Message-ID: <BANLkTikqAaS91n06Xw7SwWcMKik_8E0iHA@mail.gmail.com> (raw)
I have a RAID5 array with 4 active devices and two spares. The spares
are normally in sleep mode. I ran a resync with:
echo repair > /sys/devices/virtual/block/md0/md/sync_action
About 20 times (evenly spaced apart) during the resync, the spares
were written to, waking them up. Is that behavior desired? It seems to
me that it's a waste--I don't know why the resync would bother with
the spares.
--Rory
next reply other threads:[~2011-04-13 21:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-13 21:10 Rory Jaffe [this message]
2011-04-14 8:32 ` Resync intermittently writes to spare drives, waking them up David Brown
2011-04-18 0:55 ` NeilBrown
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