From: Justin Piszcz <jpiszcz@lucidpixels.com>
To: linux-raid@vger.kernel.org
Subject: mismatch_cnt = 128 for root (/) md raid1 device
Date: Sat, 26 May 2007 05:11:51 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0705260510040.25381@p34.internal.lan> (raw)
Kernel 2.6.21.3
Fri May 25 20:00:02 EDT 2007: Executing RAID health check for /dev/md0...
Fri May 25 20:00:03 EDT 2007: Executing RAID health check for /dev/md1...
Fri May 25 20:00:04 EDT 2007: Executing RAID health check for /dev/md2...
Fri May 25 20:00:05 EDT 2007: Executing RAID health check for /dev/md3...
Sat May 26 04:40:09 EDT 2007: cat /sys/block/md0/md/mismatch_cnt
Sat May 26 04:40:09 EDT 2007: 0
Sat May 26 04:40:09 EDT 2007: cat /sys/block/md1/md/mismatch_cnt
Sat May 26 04:40:09 EDT 2007: 0
Sat May 26 04:40:09 EDT 2007: cat /sys/block/md2/md/mismatch_cnt
Sat May 26 04:40:09 EDT 2007: 128
Sat May 26 04:40:09 EDT 2007: cat /sys/block/md3/md/mismatch_cnt
Sat May 26 04:40:09 EDT 2007: 0
Sat May 26 04:40:09 EDT 2007: The meta-device /dev/md0 has no mismatched
sectors.
Sat May 26 04:40:10 EDT 2007: The meta-device /dev/md1 has no mismatched
sectors.
Sat May 26 04:40:11 EDT 2007: The meta-device /dev/md2 has 128 mismatched
sectors.
Sat May 26 04:40:11 EDT 2007: Executing repair on /dev/md2
Sat May 26 04:40:12 EDT 2007: The meta-device /dev/md3 has no mismatched
sectors.
Sat May 26 05:00:14 EDT 2007: cat /sys/block/md0/md/mismatch_cnt
Sat May 26 05:00:14 EDT 2007: 0
Sat May 26 05:00:14 EDT 2007: cat /sys/block/md1/md/mismatch_cnt
Sat May 26 05:00:14 EDT 2007: 0
Sat May 26 05:00:14 EDT 2007: cat /sys/block/md2/md/mismatch_cnt
Sat May 26 05:00:14 EDT 2007: 0
Sat May 26 05:00:14 EDT 2007: cat /sys/block/md3/md/mismatch_cnt
Sat May 26 05:00:14 EDT 2007: 0
I often see 128 or so for the root volume (/) for my RAID1. Any idea? I
know when you reboot/shutdown a system with md raid1 it does not mount
uncleanly (I believe?).
Just curious why it happens on the root volume and if its something I
should be worried about?
md0=swap
md1=boot
md2=root
md3=raid5_volume
next reply other threads:[~2007-05-26 9:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-26 9:11 Justin Piszcz [this message]
2007-05-30 12:06 ` mismatch_cnt = 128 for root (/) md raid1 device Justin Piszcz
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