posted the email below, I did something that I am guessign I shouldn't have.
mdadm --zero-superblock /dev/hdk1 mdadm --zero-superblock /dev/hdi1
Should I try recreating the array in degrading mode.
mdadm --create /dev/md0 --level=5 /dev/hde1 /dev/hdf1 /dev/hdg1 /dev/hdh1 missing
But I think that only works with one failed device.
-Sharif
Sharif Islam wrote:
One of my RAID 5 stopped last night. I get this when I try to
restart it:
[root@pep raid]# mdadm -A /dev/md0
mdadm: device 5 in /dev/md0 has wrong state in superblock, but /dev/hdk1 seems ok
mdadm: failed to RUN_ARRAY /dev/md0: Invalid argument
Is my hdk1 gone. Should I try to replace that?
from dmesg:
Oct 9 10:36:04 pep kernel: md: export_rdev(hdf1)
Oct 9 10:36:04 pep kernel: [events: 0000000b]
Oct 9 10:36:04 pep kernel: md: bind<hdf1,1>
Oct 9 10:36:04 pep kernel: [events: 0000000b]
Oct 9 10:36:04 pep kernel: md: bind<hdg1,2>
Oct 9 10:36:04 pep kernel: [events: 0000000b]
Oct 9 10:36:04 pep kernel: md: bind<hdh1,3>
Oct 9 10:36:04 pep kernel: [events: 00000009]
Oct 9 10:36:04 pep kernel: md: bind<hdi1,4>
Oct 9 10:36:04 pep kernel: [events: 0000000a]
Oct 9 10:36:04 pep kernel: md: bind<hdk1,5>
Oct 9 10:36:04 pep kernel: [events: 0000000b]
Oct 9 10:36:04 pep kernel: md: bind<hde1,6>
Oct 9 10:36:04 pep kernel: md: hde1's event counter: 0000000b
Oct 9 10:36:04 pep kernel: md: hdk1's event counter: 0000000a
Oct 9 10:36:04 pep kernel: md: hdi1's event counter: 00000009
Oct 9 10:36:04 pep kernel: md: hdh1's event counter: 0000000b
Oct 9 10:36:04 pep kernel: md: hdg1's event counter: 0000000b
Oct 9 10:36:04 pep kernel: md: hdf1's event counter: 0000000b
Oct 9 10:36:04 pep kernel: md: superblock update time inconsistency -- using the most recent one
Oct 9 10:36:04 pep kernel: md: freshest: hde1
Oct 9 10:36:04 pep kernel: md: kicking non-fresh hdi1 from array!
Oct 9 10:36:04 pep kernel: md: unbind<hdi1,5>
Oct 9 10:36:04 pep kernel: md: export_rdev(hdi1)
Oct 9 10:36:04 pep kernel: md0: removing former faulty hdi1!
Oct 9 10:36:04 pep kernel: md0: kicking faulty hdk1!
Oct 9 10:36:04 pep kernel: md: unbind<hdk1,4>
Oct 9 10:36:04 pep kernel: md: export_rdev(hdk1)
Oct 9 10:36:04 pep kernel: md: md0: raid array is not clean -- starting background reconstruction
Oct 9 10:36:04 pep kernel: md0: max total readahead window set to 2560k
Oct 9 10:36:04 pep kernel: md0: 5 data-disks, max readahead per data-disk: 512k
Oct 9 10:36:04 pep kernel: raid5: device hde1 operational as raid disk 0
Oct 9 10:36:04 pep kernel: raid5: device hdh1 operational as raid disk 3
Oct 9 10:36:04 pep kernel: raid5: device hdg1 operational as raid disk 2
Oct 9 10:36:04 pep kernel: raid5: device hdf1 operational as raid disk 1
Oct 9 10:36:04 pep kernel: raid5: not enough operational devices for md0 (2/6 failed)
Oct 9 10:36:04 pep kernel: RAID5 conf printout:
Oct 9 10:36:04 pep kernel: --- rd:6 wd:4 fd:2
Oct 9 10:36:04 pep kernel: disk 0, s:0, o:1, n:0 rd:0 us:1 dev:hde1
Oct 9 10:36:04 pep kernel: disk 1, s:0, o:1, n:1 rd:1 us:1 dev:hdf1
Oct 9 10:36:04 pep kernel: disk 2, s:0, o:1, n:2 rd:2 us:1 dev:hdg1
Oct 9 10:36:04 pep kernel: disk 3, s:0, o:1, n:3 rd:3 us:1 dev:hdh1
Oct 9 10:36:04 pep kernel: disk 4, s:0, o:0, n:4 rd:4 us:1 dev:[dev 00:00]
Oct 9 10:36:04 pep kernel: disk 5, s:0, o:0, n:5 rd:5 us:1 dev:[dev 00:00]
Oct 9 10:36:04 pep kernel: raid5: failed to run raid set md0
Oct 9 10:36:04 pep kernel: md: pers->run() failed ...
Oct 9 10:36:04 pep kernel: md: md0 stopped.
Oct 9 10:36:04 pep kernel: md: unbind<hde1,3>
Oct 9 10:36:04 pep kernel: md: export_rdev(hde1)
Oct 9 10:36:04 pep kernel: md: unbind<hdh1,2>
Oct 9 10:36:04 pep kernel: md: export_rdev(hdh1)
Oct 9 10:36:04 pep kernel: md: unbind<hdg1,1>
Oct 9 10:36:04 pep kernel: md: export_rdev(hdg1)
Oct 9 10:36:04 pep kernel: md: unbind<hdf1,0>
Oct 9 10:36:04 pep kernel: md: export_rdev(hdf1)
[root@pep raid]# cat /proc/mdstat Personalities : [raid5] read_ahead not set unused devices: <none
Thanks. -Sharif
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