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Hi Forums
I have a software raid 5 on my server with 8x 320GB. It has worked fine for 4 months, now it failed somehow on 2 power failures. (Yes ...
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- 01-21-2008 #1Just Joined!
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- Jan 2008
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mdadm RAID 5 problem
Hi Forums
I have a software raid 5 on my server with 8x 320GB. It has worked fine for 4 months, now it failed somehow on 2 power failures. (Yes I have a UPS but the battery seems to be very weak).
When I try to assemble it, I get the following:
Why are the disks marked as spare disk? With mdadm --examine they show up the correct major and minor number. So I assumed that on 2 disks the Event Counter were lower than on the other drives, but they aren't:Code:[root@wrdlbrnft2 ~]# mdadm --assemble --force --verbose /dev/md0 /dev/sd[b-i] mdadm: looking for devices for /dev/md0 mdadm: /dev/sdb is identified as a member of /dev/md0, slot 0. mdadm: /dev/sdc is identified as a member of /dev/md0, slot 1. mdadm: /dev/sdd is identified as a member of /dev/md0, slot 2. mdadm: /dev/sde is identified as a member of /dev/md0, slot 3. mdadm: /dev/sdf is identified as a member of /dev/md0, slot 4. mdadm: /dev/sdg is identified as a member of /dev/md0, slot 9. mdadm: /dev/sdh is identified as a member of /dev/md0, slot 8. mdadm: /dev/sdi is identified as a member of /dev/md0, slot 7. mdadm: added /dev/sdc to /dev/md0 as 1 mdadm: added /dev/sdd to /dev/md0 as 2 mdadm: added /dev/sde to /dev/md0 as 3 mdadm: added /dev/sdf to /dev/md0 as 4 mdadm: no uptodate device for slot 5 of /dev/md0 mdadm: no uptodate device for slot 6 of /dev/md0 mdadm: added /dev/sdi to /dev/md0 as 7 mdadm: added /dev/sdh to /dev/md0 as 8 mdadm: added /dev/sdg to /dev/md0 as 9 mdadm: added /dev/sdb to /dev/md0 as 0 mdadm: /dev/md0 assembled from 6 drives and 2 spares - not enough to start the array.
So what could I do to get my array back working? Maybe I'll have some data loss but if I get back 90% I'd be happy already.Code:[root@wrdlbrnft2 ~]# mdadm --examine /dev/md0 /dev/sd[b-i] /dev/sdb: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 394006f5 - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 0 8 16 0 active sync /dev/sdb 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sdc: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 39400707 - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 1 8 32 1 active sync /dev/sdc 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sdd: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 39400719 - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 2 8 48 2 active sync /dev/sdd 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sde: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 3940072b - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 3 8 64 3 active sync /dev/sde 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sdf: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 3940073d - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 4 8 80 4 active sync /dev/sdf 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sdg: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 39400751 - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 9 8 96 9 spare /dev/sdg 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sdh: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 3940075f - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 8 8 112 8 spare /dev/sdh 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg /dev/sdi: Magic : a92b4efc Version : 00.90.00 UUID : 707991be:b7f10572:3177a144:9624f8a6 Creation Time : Fri May 11 17:49:35 2007 Raid Level : raid5 Used Dev Size : 312571136 (298.09 GiB 320.07 GB) Array Size : 2187997952 (2086.64 GiB 2240.51 GB) Raid Devices : 8 Total Devices : 8 Preferred Minor : 0 Update Time : Tue Sep 18 09:35:43 2007 State : clean Active Devices : 6 Working Devices : 8 Failed Devices : 2 Spare Devices : 2 Checksum : 39400773 - correct Events : 0.1801958 Layout : left-symmetric Chunk Size : 64K Number Major Minor RaidDevice State this 7 8 128 7 active sync /dev/sdi 0 0 8 16 0 active sync /dev/sdb 1 1 8 32 1 active sync /dev/sdc 2 2 8 48 2 active sync /dev/sdd 3 3 8 64 3 active sync /dev/sde 4 4 8 80 4 active sync /dev/sdf 5 5 0 0 5 faulty removed 6 6 0 0 6 faulty removed 7 7 8 128 7 active sync /dev/sdi 8 8 8 112 8 spare /dev/sdh 9 9 8 96 9 spare /dev/sdg
I have no Idea what could be wrong with my array, cause every single drive has the same event counter and show status as 'clean'
plz help!
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