Can anyone please help me get my raid 1 device back up and running? I
had a chipset failure which took out one disk and then just after
replacing the disk and resyncing, the original disk lost power due to a
loose connection. mdadm seems to think that both devices are fine, but I
can't seem to fine the magic vodoo to get the raid array working again.
Sorry if this is a really stupid question. I did read the documentation
for mdadm pretty carefully, but I'm obviously missing something. Many
thanks,
Ali.
# dmseg | fgrep md
md: md driver 0.90.1 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: raid1 personality registered as nr 3
md: Autodetecting RAID arrays.
md: autorun ...
md: considering hde2 ...
md: adding hde2 ...
md: adding hda2 ...
md: created md0
md: bind<hda2>
md: bind<hde2>
md: running: <hde2><hda2>
md: kicking non-fresh hda2 from array!
md: unbind<hda2>
md: export_rdev(hda2)
raid1: no operational mirrors for md0
md: pers->run() failed ...
md: do_md_run() returned -22
md: md0 stopped.
md: unbind<hde2>
md: export_rdev(hde2)
md: ... autorun DONE.
md: Autodetecting RAID arrays.
md: autorun ...
md: considering hde2 ...
md: adding hde2 ...
md: adding hda2 ...
md: created md0
md: bind<hda2>
md: bind<hde2>
md: running: <hde2><hda2>
md: kicking non-fresh hda2 from array!
md: unbind<hda2>
md: export_rdev(hda2)
raid1: no operational mirrors for md0
md: pers->run() failed ...
md: do_md_run() returned -22
md: md0 stopped.
md: unbind<hde2>
md: export_rdev(hde2)
md: ... autorun DONE.
md: md0 stopped.
md: bind<hda2>
md: bind<hde2>
md: kicking non-fresh hda2 from array!
md: unbind<hda2>
md: export_rdev(hda2)
raid1: no operational mirrors for md0
md: pers->run() failed ...
# mdadm --assemble /dev/md0 /dev/hda2 /dev/hde2
# more /proc/mdstat
Personalities : [raid1]
md0 : inactive hde2[2]
23535104 blocks
unused devices: <none>
# mdadm -D /dev/md0
/dev/md0:
Version : 00.90.01
Creation Time : Sat May 7 00:03:45 2005
Raid Level : raid1
Device Size : 23535104 (22.44 GiB 24.10 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Sat Jul 23 08:25:16 2005
State : dirty, degraded
Active Devices : 0
Working Devices : 2
Failed Devices : 0
Spare Devices : 2
Number Major Minor RaidDevice State
0 3 2 0 spare /dev/hda2
1 0 0 -1 removed
2 33 2 -1 spare /dev/hde2
# mdadm -E /dev/hda2
/dev/hda2:
Magic : a92b4efc
Version : 00.90.01
UUID : aeff1135:511fe13c:e598e943:0907531e
Creation Time : Sat May 7 00:03:45 2005
Raid Level : raid1
Device Size : 23535104 (22.44 GiB 24.10 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Sat Jul 23 08:24:15 2005
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 1
Spare Devices : 1
Checksum : 1ebddac8 - correct
Events : 0.469741
Number Major Minor RaidDevice State
this 0 3 2 0 active sync /dev/hda2
0 0 3 2 0 active sync /dev/hda2
1 1 0 0 1 faulty removed
2 2 33 2 1 spare /dev/hde2
# mdadm -E /dev/hde2
/dev/hde2:
Magic : a92b4efc
Version : 00.90.01
UUID : aeff1135:511fe13c:e598e943:0907531e
Creation Time : Sat May 7 00:03:45 2005
Raid Level : raid1
Device Size : 23535104 (22.44 GiB 24.10 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Sat Jul 23 08:25:16 2005
State : clean
Active Devices : 1
Working Devices : 2
Failed Devices : 1
Spare Devices : 1
Checksum : 1ec3a142 - correct
Events : 0.658941
Number Major Minor RaidDevice State
this 2 33 2 2 spare /dev/hde2
0 0 3 2 0 active sync /dev/hda2
1 1 0 0 1 faulty removed
2 2 33 2 2 spare /dev/hde2
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