Hi everyone,
I recently got an email warning from Zabbix about my raid array, so I
went to have a look at it:
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Personalities : [linear] [raid0] [raid1] [raid10] [raid5] [raid4]
md2 : active raid5 hdk1[3] hdi1[2] hdg1[1] hde1[0]
1172126208 blocks level 5, 32k chunk, algorithm 2 [4/4] [UUUU]
[===============>.....] resync = 77.6% (303281336/390708736)
finish=102.7min speed=14181K/sec
md1 : active raid5 sdd3[2] sdc3[3] sdb3[1] sda3[0]
184490112 blocks level 5, 32k chunk, algorithm 0 [4/4] [UUUU]
md0 : active raid1 sdb1[1] sda1[0]
9767424 blocks [2/2] [UU]
unused devices: <none>
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Then I got detail on md2:
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weebl:/var/log# mdadm --detail /dev/md2
/dev/md2:
Version : 00.90.03
Creation Time : Sun May 14 09:43:37 2006
Raid Level : raid5
Array Size : 1172126208 (1117.83 GiB 1200.26 GB)
Device Size : 390708736 (372.61 GiB 400.09 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Sun Nov 5 07:13:01 2006
State : clean, resyncing
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 32K
Rebuild Status : 77% complete
UUID : 41af16c5:36143507:8dcabe0b:f372280d
Events : 0.12485388
Number Major Minor RaidDevice State
0 33 1 0 active sync /dev/hde1
1 34 1 1 active sync /dev/hdg1
2 56 1 2 active sync /dev/hdi1
3 57 1 3 active sync /dev/hdk1
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I thought it would be good to check /var/log/messages:
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Nov 5 01:06:01 xen-dom0 kernel: md: syncing RAID array md0
Nov 5 01:06:01 xen-dom0 kernel: md: minimum _guaranteed_
reconstruction speed: 1000 KB/sec/disc.
Nov 5 01:06:01 xen-dom0 kernel: md: using maximum available idle IO
bandwidth (but not more than 200000 KB/sec) for reconstruction.
Nov 5 01:06:01 xen-dom0 kernel: md: using 128k window, over a total
of 9767424 blocks.
Nov 5 01:06:01 xen-dom0 kernel: md: delaying resync of md1 until md0
has finished resync (they share one or more physical units)
Nov 5 01:06:01 xen-dom0 kernel: md: syncing RAID array md2
Nov 5 01:06:01 xen-dom0 kernel: md: minimum _guaranteed_
reconstruction speed: 1000 KB/sec/disc.
Nov 5 01:06:01 xen-dom0 kernel: md: using maximum available idle IO
bandwidth (but not more than 200000 KB/sec) for reconstruction.
Nov 5 01:06:01 xen-dom0 kernel: md: using 128k window, over a total
of 390708736 blocks.
Nov 5 01:12:37 xen-dom0 kernel: md: md0: sync done.
Nov 5 01:12:37 xen-dom0 kernel: md: syncing RAID array md1
Nov 5 01:12:37 xen-dom0 kernel: RAID1 conf printout:
Nov 5 01:12:37 xen-dom0 kernel: --- wd:2 rd:2
Nov 5 01:12:37 xen-dom0 kernel: disk 0, wo:0, o:1, dev:sda1
Nov 5 01:12:37 xen-dom0 kernel: disk 1, wo:0, o:1, dev:sdb1
Nov 5 01:12:37 xen-dom0 kernel: md: minimum _guaranteed_
reconstruction speed: 1000 KB/sec/disc.
Nov 5 01:12:37 xen-dom0 kernel: md: using maximum available idle IO
bandwidth (but not more than 200000 KB/sec) for reconstruction.
Nov 5 01:12:37 xen-dom0 kernel: md: using 128k window, over a total
of 61496704 blocks.
Nov 5 02:21:14 xen-dom0 kernel: RAID5 conf printout:
Nov 5 02:21:14 xen-dom0 kernel: --- rd:4 wd:4 fd:0
Nov 5 02:21:14 xen-dom0 kernel: disk 0, o:1, dev:sda3
Nov 5 02:21:14 xen-dom0 kernel: disk 1, o:1, dev:sdb3
Nov 5 02:21:14 xen-dom0 kernel: disk 2, o:1, dev:sdd3
Nov 5 02:21:14 xen-dom0 kernel: disk 3, o:1, dev:sdc3
----------
This system has been running for a year now without problems so it is
really disappointing to think there is a problem :'(
Why might this happen? Is it serious? What should I do to resolve the situation?
If its resyncing that means it detected an error, right?
Thank you for your help
-Rob
--
------------------------------------------------------
"By all means let's be open-minded, but not so open-minded that our
brains drop out." - Richard Dawkins
"It is far better to grasp the universe as it really is than to
persist in delusion, however satisfying and reassuring." - Carl Sagan
http://www.robhulme.com/
http://robhu.livejournal.com/
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