From mboxrd@z Thu Jan 1 00:00:00 1970 From: Justin Piszcz Subject: mismatch_cnt = 128 for root (/) md raid1 device Date: Sat, 26 May 2007 05:11:51 -0400 (EDT) Message-ID: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids 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