So, nobody knows what might be going on here? On Wednesday 21 February 2007 01:15, José Pablo Fernández wrote: > I have a raid1 setup with three partitions: > > md0, mounted on /, composed of /dev/sda1 and /dev/sdb1 > md1, mounted on swap, composed of /dev/sda2 and /dev/sdb2 > md2, mounted on swap, composed of /dev/sda3 and /dev/sdb3 > > I am not sure how it was installed because it was done a long time ago, I > don't even if I did it myself or someone else. I've found that the whole b > disk was in removed state, so we put a new disk (just in case) and added > it. Now when I reboot I get this state: > > # mdadm --detail --scan > ARRAY /dev/md2 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda3,/dev/sdb3 > ARRAY /dev/md0 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda1 > ARRAY /dev/md1 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda2 > > As you can see md0 and m1 are missing the second member of the array. > Further inquiring shows it is removed: > > # mdadm --detail /dev/md0 > /dev/md0: > Version : 00.90.01 > Creation Time : Tue Feb 7 14:58:18 2006 > Raid Level : raid1 > Array Size : 15623104 (14.90 GiB 16.00 GB) > Device Size : 15623104 (14.90 GiB 16.00 GB) > Raid Devices : 2 > Total Devices : 1 > Preferred Minor : 0 > Persistence : Superblock is persistent > > Update Time : Wed Feb 21 01:04:16 2007 > State : clean, degraded > Active Devices : 1 > Working Devices : 1 > Failed Devices : 0 > Spare Devices : 0 > > UUID : a1a07d14:64ab7244:8a585e9b:fbee0505 > Events : 0.6120832 > > Number Major Minor RaidDevice State > 0 8 1 0 active sync /dev/sda1 > 1 0 0 - removed > > # mdadm --detail /dev/md1 > /dev/md1: > Version : 00.90.01 > Creation Time : Tue Feb 7 14:59:06 2006 > Raid Level : raid1 > Array Size : 979840 (956.88 MiB 1003.36 MB) > Device Size : 979840 (956.88 MiB 1003.36 MB) > Raid Devices : 2 > Total Devices : 1 > Preferred Minor : 1 > Persistence : Superblock is persistent > > Update Time : Wed Feb 21 00:43:44 2007 > State : clean, degraded > Active Devices : 1 > Working Devices : 1 > Failed Devices : 0 > Spare Devices : 0 > > UUID : 2e8d1e91:1db84b53:602c6a7d:b9fb162a > Events : 0.1409 > > Number Major Minor RaidDevice State > 0 8 2 0 active sync /dev/sda2 > 1 0 0 - removed > > > > I believe md2 was ok because it was actually assembled > from /etc/mdadm/mdadm.conf which lists both partitions correctly: > > # cat /etc/mdadm/mdadm.conf > DEVICE partitions > ARRAY /dev/md0 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda1,/dev/sdb1 > ARRAY /dev/md1 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda2,/dev/sdb2 > ARRAY /dev/md2 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda3,/dev/sdb3 > > but md0 and md1 must have been assembled with another method (because there > was no /etc at that time to read configs from) and that must be failing > somehow. > The kernel command line is: root=/dev/md0 ro md=0,/dev/sda1,/dev/sdb1 > > The relevant information from dmesg is: > > md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 > md: raid1 personality registered as nr 3 > ... > md: raid0 personality registered as nr 2 > raid5: automatically using best checksumming function: pIII_sse > pIII_sse : 5044.000 MB/sec > raid5: using function: pIII_sse (5044.000 MB/sec) > md: raid5 personality registered as nr 4 > ... > md: md1 stopped. > md: bind<sda2> > raid1: raid set md1 active with 1 out of 2 mirrors > md: md0 stopped. > md: bind<sda1> > raid1: raid set md0 active with 1 out of 2 mirrors > kjournald starting. Commit interval 5 seconds > EXT3-fs: mounted filesystem with ordered data mode. > Adding 979832k swap on /dev/md1. Priority:-1 extents:1 > EXT3 FS on md0, internal journal > Capability LSM initialized > md: md2 stopped. > md: bind<sdb3> > md: bind<sda3> > raid1: raid set md2 active with 2 out of 2 mirrors > kjournald starting. Commit interval 5 seconds > EXT3 FS on md2, internal journal > EXT3-fs: mounted filesystem with ordered data mode. > > > Any ideas what is wrong here? > > If after that I add the spare partitions, everything is good, until the > next reboot: > > # mdadm /dev/md0 --add /dev/sdb1 > mdadm: hot added /dev/sdb1 > # mdadm /dev/md1 --add /dev/sdb2 > mdadm: hot added /dev/sdb2 > > # mdadm --detail --scan > ARRAY /dev/md2 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda3,/dev/sdb3 > ARRAY /dev/md0 level=raid1 num-devices=2 spares=1 UUID=[...] > devices=/dev/sda1,/dev/sdb1 > ARRAY /dev/md1 level=raid1 num-devices=2 spares=1 UUID=[...] > devices=/dev/sda2,/dev/sdb2 > > and after waiting some minutes: > > ARRAY /dev/md2 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda3,/dev/sdb3 > ARRAY /dev/md0 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda1,/dev/sdb1 > ARRAY /dev/md1 level=raid1 num-devices=2 UUID=[...] > devices=/dev/sda2,/dev/sdb2 > > Any help is greatly appreciated. > > Thank you.
-- José Pablo Fernández [EMAIL PROTECTED]
