2010/2/28 John R Pierce <pierce at hogranch.com>: > this has never happened to me before, and I'm somewhat at a loss. got a > email from the cron thing... > > /etc/cron.weekly/99-raid-check: > > WARNING: mismatch_cnt is not 0 on /dev/md10 > WARNING: mismatch_cnt is not 0 on /dev/md11 > > > ok, md10 and md11 are each raid1's made from 2 x 72GB scsi drives, on a > dell 2850 or something dual single-core 3ghz server. > > these two md's are in turn a striped LVM volume group > > dmesg shows.... > > md: syncing RAID array md10 > md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. > md: using maximum available idle IO bandwidth (but not more than > 200000 KB/sec) for reconstruction. > md: using 128k window, over a total of 143374656 blocks. > md: syncing RAID array md11 > md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. > md: using maximum available idle IO bandwidth (but not more than > 200000 KB/sec) for reconstruction. > md: using 128k window, over a total of 143374656 blocks. > md: md10: sync done. > RAID1 conf printout: > --- wd:2 rd:2 > disk 0, wo:0, o:1, dev:sdc1 > disk 1, wo:0, o:1, dev:sdd1 > md: md11: sync done. > RAID1 conf printout: > --- wd:2 rd:2 > disk 0, wo:0, o:1, dev:sde1 > disk 1, wo:0, o:1, dev:sdf1 > > I'm not sure what thats telling me. the last thing prior to this in > dmesg was when I added a swap to this vg last week. > > > and mdadm --detail shows... > > # mdadm --detail /dev/md10 > /dev/md10: > Version : 0.90 > Creation Time : Wed Oct 8 12:54:48 2008 > Raid Level : raid1 > Array Size : 143374656 (136.73 GiB 146.82 GB) > Used Dev Size : 143374656 (136.73 GiB 146.82 GB) > Raid Devices : 2 > Total Devices : 2 > Preferred Minor : 10 > Persistence : Superblock is persistent > > Update Time : Sun Feb 28 04:53:29 2010 > State : clean > Active Devices : 2 > Working Devices : 2 > Failed Devices : 0 > Spare Devices : 0 > > UUID : b6da4dc5:c7372d6e:63f32b9c:49fa95f9 > Events : 0.84 > > Number Major Minor RaidDevice State > 0 8 33 0 active sync /dev/sdc1 > 1 8 49 1 active sync /dev/sdd1 > # mdadm --detail /dev/md11 > /dev/md11: > Version : 0.90 > Creation Time : Wed Oct 8 12:54:57 2008 > Raid Level : raid1 > Array Size : 143374656 (136.73 GiB 146.82 GB) > Used Dev Size : 143374656 (136.73 GiB 146.82 GB) > Raid Devices : 2 > Total Devices : 2 > Preferred Minor : 11 > Persistence : Superblock is persistent > > Update Time : Sun Feb 28 11:49:45 2010 > State : clean > Active Devices : 2 > Working Devices : 2 > Failed Devices : 0 > Spare Devices : 0 > > UUID : be475cd9:b98ee3ff:d18e668c:a5a6e06b > Events : 0.62 > > Number Major Minor RaidDevice State > 0 8 65 0 active sync /dev/sde1 > 1 8 81 1 active sync /dev/sdf1 > > > > I don't see anything wrong here ? > > lvm shows no problems I detect either... > > # vgdisplay vg1 > Volume group "vgdisplay" not found > LV VG Attr LSize Origin Snap% Move Log Copy% Convert > glassfish vg1 -wi-ao 10.00G > lv1 vg1 -wi-ao 97.66G > oradata vg1 -wi-ao 30.00G > pgdata vg1 -wi-ao 25.00G > pgdata_lss_idx vg1 -wi-ao 20.00G > pgdata_lss_tab vg1 -wi-ao 20.00G > swapper vg1 -wi-ao 3.00G > vmware vg1 -wi-ao 50.00G > > > # pvdisplay /dev/md10 /dev/md11 > --- Physical volume --- > PV Name /dev/md10 > VG Name vg1 > PV Size 136.73 GB / not usable 2.31 MB > Allocatable yes > PE Size (KByte) 4096 > Total PE 35003 > Free PE 1998 > Allocated PE 33005 > PV UUID oAgJY7-Tmf7-ac35-KoUH-15uz-Q5Ae-bmFCys > > --- Physical volume --- > PV Name /dev/md11 > VG Name vg1 > PV Size 136.73 GB / not usable 2.31 MB > Allocatable yes > PE Size (KByte) 4096 > Total PE 35003 > Free PE 2560 > Allocated PE 32443 > PV UUID A4Qb3P-j5Lr-8ZEv-FjbC-Iczm-QkC8-bqP0zv maybe this helps: http://www.arrfab.net/blog/?p=199 -- Eero