On 2013-04-13 00:42, Andrew McGlashan wrote: > Hi, > > On 11/04/2013 12:28 PM, Matthew Cengia wrote: > > With a pair of 2TB Western Digital SATA drives in my server, both in > > RAID 1: > > > > | mattcen@adam:tmp$ zgrep -h 'mismatches found' /var/log/syslog* | sort -n > > | 2012-02-05T22:05:03.118792+11:00 adam mdadm[1545]: RebuildFinished event > > detected on md device /dev/md/1, component device mismatches found: 10496 > > | 2012-03-04T17:00:12.084923+11:00 adam mdadm[1724]: RebuildFinished event > > detected on md device /dev/md/1, component device mismatches found: 11008 > > | 2012-04-01T18:20:08.394369+10:00 adam mdadm[1724]: RebuildFinished event > > detected on md device /dev/md/1, component device mismatches found: 10496 > > | 2012-05-06T16:42:59.386193+10:00 adam mdadm[1724]: RebuildFinished event > > detected on md device /dev/md/1, component device mismatches found: 10240 > > I would lay odds (and I'm not a betting man) that /dev/md/1 is your swap > file, this is perfectly normal in this case. > > I've seen this before, my solution to stop seeing this is to have swap > on it's own RAID, and LVM volumes on different RAID devices.
Andrew, You're exactly right; I'd forgotten this particular data point; all 3 systems from which I pulled these mismatch messages have swap space inside the LVM PV living on /dev/md/1, which completely explains these messages. -- Regards, Matthew Cengia
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