linux-kernel - raid 1 check and component device mismatches

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Message-ID: <20070223070439.GG7028@jaquet.dk>
Date:	Fri, 23 Feb 2007 08:04:39 +0100
From:	Rasmus Andersen <rasmus@...uet.dk>
To:	linux-kernel@...r.kernel.org
Subject: raid 1 check and component device mismatches

Hello,

Let me first start by saying that if a better place to ask these
quesions is to be found, please let me know.

I have a 2.6.20 kernel running a raid 1 set with two SATA disks.
Recently (on an older (gentoo-specific) kernel) I started getting
entries like this after my weekly 'echo check >
/sys/block/md0/md/sync_action'

mdadm: RebuildFinished event detected on md device /dev/md0, component 
device  mismatches found : 375936

I have tried 'repair' a number of times but to no avail. The disks seem
OK from their smart values and I have yet to discover an actual data
problem. Still, I am a bit unsettled and would like to hear opinions.
I have attached dmesg and smartctl -a output from both disks, if more is
needed I am happy to provide.

Thanks in advance,
  Rasmus

View attachment "dmesg" of type "text/plain" (15406 bytes)

Download attachment "smart.sda" of type "application/vnd.stardivision.draw" (5312 bytes)

View attachment "smart.sdb" of type "text/plain" (4355 bytes)