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pgu Guru

Joined: 30 Jul 2009 Posts: 594 Location: Oslo, Norway
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Posted: Sat Aug 06, 2016 4:10 pm Post subject: [SOLVED] mdstat all drives marked (S) |
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After a shutdown and power on my raid came up in a strange state:
Code: | md126 : inactive sdd3[7](S) sdb3[8](S) sdc3[2](S) sdf3[6](S) sde3[4](S)
9644836280 blocks super 1.2 |
My sda drive seem to have problems
Code: |
[ 15.474947] ata1.00: exception Emask 0x0 SAct 0x200 SErr 0x0 action 0x0
[ 15.474950] ata1.00: irq_stat 0x40000008
[ 15.474954] ata1.00: failed command: READ FPDMA QUEUED
[ 15.474960] ata1.00: cmd 60/08:48:00:88:e0/00:00:e8:00:00/40 tag 9 ncq 4096 in
res 41/40:08:00:88:e0/00:00:e8:00:00/00 Emask 0x409 (media error) <F>
[ 15.474962] ata1.00: status: { DRDY ERR }
[ 15.474963] ata1.00: error: { UNC }
[ 15.476566] ata1.00: configured for UDMA/133
[ 15.476580] sd 0:0:0:0: [sda] tag#9 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 15.476584] sd 0:0:0:0: [sda] tag#9 Sense Key : Medium Error [current] [descriptor]
[ 15.476587] sd 0:0:0:0: [sda] tag#9 Add. Sense: Unrecovered read error - auto reallocate failed
[ 15.476590] sd 0:0:0:0: [sda] tag#9 CDB: Read(10) 28 00 e8 e0 88 00 00 00 08 00
[ 15.476593] blk_update_request: I/O error, dev sda, sector 3907028992
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I had drive failures before, but only one drive was affected. What is the safest and suggested method of resolving the problem when all drivers are labeled spare? Can I just assemble manually?
Also mdadm --examine says " md superblock detected on /dev/sda3" (the bad drive), but the state of all the other /dev/sdX3 is "State : clean", "Raid Devices" but there are no "Total Devices", "Active Devices", "Working Devices", Spare Devices". All checksums are correct.
Last edited by pgu on Sun Aug 07, 2016 7:16 pm; edited 1 time in total |
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frostschutz Advocate


Joined: 22 Feb 2005 Posts: 2971 Location: Germany
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Posted: Sat Aug 06, 2016 5:06 pm Post subject: Re: mdstat all drives marked (S) |
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pgu wrote: | Also mdadm --examine says |
Actual output for all devices please, stop renarrating things. We really can't tell anything from your post, not even the raid level...
Also show smartctl -a for all disks and run a smartctl -t long selftest on disks that look fine in SMART.
Also see if you can ddrescue sda to a new drive if it's not gone completely yet. |
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pgu Guru

Joined: 30 Jul 2009 Posts: 594 Location: Oslo, Norway
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Posted: Sat Aug 06, 2016 5:22 pm Post subject: |
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Here's the mdadm --examine output. There are three md devices across the three partitions on 6 drives (raid5):
Code: | livecd ~ # mdadm --examine /dev/sd[abcdef][123] >> /tmp/raid.status
mdadm: No md superblock detected on /dev/sda3. |
Code: | /dev/sda1:
Magic : a92b4efc
Version : 0.90.00
UUID : 4f30c46d:a50d0ec2:cb201669:f728008a (local to host livecd)
Creation Time : Fri Nov 30 22:17:53 2012
Raid Level : raid1
Used Dev Size : 131008 (127.96 MiB 134.15 MB)
Array Size : 131008 (127.96 MiB 134.15 MB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 1
Update Time : Sun Nov 29 12:08:59 2015
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 6c7571a - correct
Events : 112
Number Major Minor RaidDevice State
this 0 8 1 0 active sync /dev/sda1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
2 2 8 33 2 active sync /dev/sdc1
3 3 8 49 3 active sync /dev/sdd1
4 4 8 65 4 active sync /dev/sde1
5 5 8 81 5 active sync /dev/sdf1
/dev/sda2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 197538d3:6c192c31:12944fc1:6d087033
Name : livecd:2 (local to host livecd)
Creation Time : Fri Nov 30 22:19:38 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 48826368 (23.28 GiB 25.00 GB)
Array Size : 122063360 (116.41 GiB 124.99 GB)
Used Dev Size : 48825344 (23.28 GiB 25.00 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1024 sectors
State : clean
Device UUID : b52420fe:e908672d:f0618802:3e0adf20
Update Time : Wed Aug 3 19:45:44 2016
Checksum : 365c7f76 - correct
Events : 2569
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdb1:
Magic : a92b4efc
Version : 0.90.00
UUID : 4f30c46d:a50d0ec2:cb201669:f728008a (local to host livecd)
Creation Time : Fri Nov 30 22:17:53 2012
Raid Level : raid1
Used Dev Size : 131008 (127.96 MiB 134.15 MB)
Array Size : 131008 (127.96 MiB 134.15 MB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 1
Update Time : Sun Nov 29 12:08:59 2015
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 6c7572c - correct
Events : 112
Number Major Minor RaidDevice State
this 1 8 17 1 active sync /dev/sdb1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
2 2 8 33 2 active sync /dev/sdc1
3 3 8 49 3 active sync /dev/sdd1
4 4 8 65 4 active sync /dev/sde1
5 5 8 81 5 active sync /dev/sdf1
/dev/sdb2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 197538d3:6c192c31:12944fc1:6d087033
Name : livecd:2 (local to host livecd)
Creation Time : Fri Nov 30 22:19:38 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 48826368 (23.28 GiB 25.00 GB)
Array Size : 122063360 (116.41 GiB 124.99 GB)
Used Dev Size : 48825344 (23.28 GiB 25.00 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1024 sectors
State : clean
Device UUID : 58aee8e3:205d6787:88fe510c:ad42e43a
Update Time : Wed Aug 3 19:45:44 2016
Checksum : 99f4325f - correct
Events : 2569
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdb3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : d6ca93a9:bb92ca2a:90608e27:f1d0ce79
Name : livecd:3 (local to host livecd)
Creation Time : Fri Nov 30 22:19:59 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3857934512 (1839.61 GiB 1975.26 GB)
Array Size : 9644833280 (9198.03 GiB 9876.31 GB)
Used Dev Size : 3857933312 (1839.61 GiB 1975.26 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1200 sectors
State : clean
Device UUID : 90c24c35:a7c18ade:a599c650:4f447e8c
Update Time : Thu Aug 4 11:38:11 2016
Checksum : 1c6134ba - correct
Events : 2749142
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc1:
Magic : a92b4efc
Version : 0.90.00
UUID : 4f30c46d:a50d0ec2:cb201669:f728008a (local to host livecd)
Creation Time : Fri Nov 30 22:17:53 2012
Raid Level : raid1
Used Dev Size : 131008 (127.96 MiB 134.15 MB)
Array Size : 131008 (127.96 MiB 134.15 MB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 1
Update Time : Sun Nov 29 12:08:59 2015
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 6c7573e - correct
Events : 112
Number Major Minor RaidDevice State
this 2 8 33 2 active sync /dev/sdc1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
2 2 8 33 2 active sync /dev/sdc1
3 3 8 49 3 active sync /dev/sdd1
4 4 8 65 4 active sync /dev/sde1
5 5 8 81 5 active sync /dev/sdf1
/dev/sdc2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 197538d3:6c192c31:12944fc1:6d087033
Name : livecd:2 (local to host livecd)
Creation Time : Fri Nov 30 22:19:38 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 48826368 (23.28 GiB 25.00 GB)
Array Size : 122063360 (116.41 GiB 124.99 GB)
Used Dev Size : 48825344 (23.28 GiB 25.00 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1024 sectors
State : clean
Device UUID : 32a3e165:7ff3ca90:2cb80960:cbccdf99
Update Time : Wed Aug 3 19:45:44 2016
Checksum : d8040154 - correct
Events : 2569
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : d6ca93a9:bb92ca2a:90608e27:f1d0ce79
Name : livecd:3 (local to host livecd)
Creation Time : Fri Nov 30 22:19:59 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3857934512 (1839.61 GiB 1975.26 GB)
Array Size : 9644833280 (9198.03 GiB 9876.31 GB)
Used Dev Size : 3857933312 (1839.61 GiB 1975.26 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1200 sectors
State : clean
Device UUID : 5fd0747c:21b76961:587e5152:e5bdfe5a
Update Time : Thu Aug 4 11:38:11 2016
Checksum : b6739645 - correct
Events : 2749142
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdd1:
Magic : a92b4efc
Version : 0.90.00
UUID : 4f30c46d:a50d0ec2:cb201669:f728008a (local to host livecd)
Creation Time : Fri Nov 30 22:17:53 2012
Raid Level : raid1
Used Dev Size : 131008 (127.96 MiB 134.15 MB)
Array Size : 131008 (127.96 MiB 134.15 MB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 1
Update Time : Sun Nov 29 12:08:59 2015
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 6c75750 - correct
Events : 112
Number Major Minor RaidDevice State
this 3 8 49 3 active sync /dev/sdd1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
2 2 8 33 2 active sync /dev/sdc1
3 3 8 49 3 active sync /dev/sdd1
4 4 8 65 4 active sync /dev/sde1
5 5 8 81 5 active sync /dev/sdf1
/dev/sdd2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 197538d3:6c192c31:12944fc1:6d087033
Name : livecd:2 (local to host livecd)
Creation Time : Fri Nov 30 22:19:38 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 48826368 (23.28 GiB 25.00 GB)
Array Size : 122063360 (116.41 GiB 124.99 GB)
Used Dev Size : 48825344 (23.28 GiB 25.00 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1024 sectors
State : clean
Device UUID : b45ca60c:3cc1e414:62f34d8d:b951ab58
Update Time : Wed Aug 3 19:45:44 2016
Checksum : eef248bb - correct
Events : 2569
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdd3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : d6ca93a9:bb92ca2a:90608e27:f1d0ce79
Name : livecd:3 (local to host livecd)
Creation Time : Fri Nov 30 22:19:59 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3857934512 (1839.61 GiB 1975.26 GB)
Array Size : 9644833280 (9198.03 GiB 9876.31 GB)
Used Dev Size : 3857933312 (1839.61 GiB 1975.26 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1200 sectors
State : clean
Device UUID : 32aecd64:ffe3ada4:473b8a8b:33c24bb3
Update Time : Thu Aug 4 11:38:11 2016
Checksum : 73966239 - correct
Events : 2749142
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sde1:
Magic : a92b4efc
Version : 0.90.00
UUID : 4f30c46d:a50d0ec2:cb201669:f728008a (local to host livecd)
Creation Time : Fri Nov 30 22:17:53 2012
Raid Level : raid1
Used Dev Size : 131008 (127.96 MiB 134.15 MB)
Array Size : 131008 (127.96 MiB 134.15 MB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 1
Update Time : Sun Nov 29 12:08:59 2015
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 6c75762 - correct
Events : 112
Number Major Minor RaidDevice State
this 4 8 65 4 active sync /dev/sde1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
2 2 8 33 2 active sync /dev/sdc1
3 3 8 49 3 active sync /dev/sdd1
4 4 8 65 4 active sync /dev/sde1
5 5 8 81 5 active sync /dev/sdf1
/dev/sde2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 197538d3:6c192c31:12944fc1:6d087033
Name : livecd:2 (local to host livecd)
Creation Time : Fri Nov 30 22:19:38 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 48826368 (23.28 GiB 25.00 GB)
Array Size : 122063360 (116.41 GiB 124.99 GB)
Used Dev Size : 48825344 (23.28 GiB 25.00 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1024 sectors
State : clean
Device UUID : 02d7c943:61e9e97e:ae62bbb4:3df020da
Update Time : Wed Aug 3 19:45:44 2016
Checksum : 38fdf8fd - correct
Events : 2569
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sde3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : d6ca93a9:bb92ca2a:90608e27:f1d0ce79
Name : livecd:3 (local to host livecd)
Creation Time : Fri Nov 30 22:19:59 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3857934512 (1839.61 GiB 1975.26 GB)
Array Size : 9644833280 (9198.03 GiB 9876.31 GB)
Used Dev Size : 3857933312 (1839.61 GiB 1975.26 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1200 sectors
State : clean
Device UUID : 7c7df45b:80935663:d7ce47e8:6c6baf9a
Update Time : Thu Aug 4 11:38:11 2016
Checksum : 6d871dca - correct
Events : 2749142
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdf1:
Magic : a92b4efc
Version : 0.90.00
UUID : 4f30c46d:a50d0ec2:cb201669:f728008a (local to host livecd)
Creation Time : Fri Nov 30 22:17:53 2012
Raid Level : raid1
Used Dev Size : 131008 (127.96 MiB 134.15 MB)
Array Size : 131008 (127.96 MiB 134.15 MB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 1
Update Time : Sun Nov 29 12:08:59 2015
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Checksum : 6c75774 - correct
Events : 112
Number Major Minor RaidDevice State
this 5 8 81 5 active sync /dev/sdf1
0 0 8 1 0 active sync /dev/sda1
1 1 8 17 1 active sync /dev/sdb1
2 2 8 33 2 active sync /dev/sdc1
3 3 8 49 3 active sync /dev/sdd1
4 4 8 65 4 active sync /dev/sde1
5 5 8 81 5 active sync /dev/sdf1
/dev/sdf2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 197538d3:6c192c31:12944fc1:6d087033
Name : livecd:2 (local to host livecd)
Creation Time : Fri Nov 30 22:19:38 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 48826368 (23.28 GiB 25.00 GB)
Array Size : 122063360 (116.41 GiB 124.99 GB)
Used Dev Size : 48825344 (23.28 GiB 25.00 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1024 sectors
State : clean
Device UUID : 90cba2d5:278d7c20:6355c2a6:f4f13e32
Update Time : Wed Aug 3 19:45:44 2016
Checksum : b68e85be - correct
Events : 2569
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdf3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : d6ca93a9:bb92ca2a:90608e27:f1d0ce79
Name : livecd:3 (local to host livecd)
Creation Time : Fri Nov 30 22:19:59 2012
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 3857934512 (1839.61 GiB 1975.26 GB)
Array Size : 9644833280 (9198.03 GiB 9876.31 GB)
Used Dev Size : 3857933312 (1839.61 GiB 1975.26 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=1200 sectors
State : clean
Device UUID : bf1a173f:f5c3670f:6916fa7e:716c0227
Update Time : Thu Aug 4 11:38:11 2016
Checksum : 1fc0341a - correct
Events : 2749142
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
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frostschutz Advocate


Joined: 22 Feb 2005 Posts: 2971 Location: Germany
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Posted: Sat Aug 06, 2016 8:42 pm Post subject: |
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That doesn't look too bad...
What does your mdadm.conf look like?
What happens if you stop and assemble this RAID?
Code: |
mdadm --stop /dev/md126
mdadm --assemble /dev/md126 /dev/sd[bcdef]3
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pgu Guru

Joined: 30 Jul 2009 Posts: 594 Location: Oslo, Norway
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Posted: Sun Aug 07, 2016 7:04 am Post subject: |
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Thank you for you reply. I haven't tried yet. My initial questian was if such a manual assembly is safe in this state. I removed the old drive and I've put it into a different system and I see the following errors in smartct
Code: | Error 270 occurred at disk power-on lifetime: 32193 hours (1341 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 00:08:46.200 READ FPDMA QUEUED
ec 00 01 00 00 00 00 00 00:08:46.197 IDENTIFY DEVICE
60 00 08 08 08 04 40 00 00:08:46.195 READ FPDMA QUEUED
60 00 08 08 08 04 40 00 00:08:46.194 READ FPDMA QUEUED
60 00 08 08 08 04 40 00 00:08:46.194 READ FPDMA QUEUED
Error 269 occurred at disk power-on lifetime: 32193 hours (1341 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 00:08:43.234 READ FPDMA QUEUED
60 00 08 00 18 00 40 00 00:08:43.226 READ FPDMA QUEUED
60 00 08 00 0a 00 40 00 00:08:43.225 READ FPDMA QUEUED
60 00 08 f8 0b 00 40 00 00:08:43.225 READ FPDMA QUEUED
60 00 08 f0 0b 00 40 00 00:08:43.225 READ FPDMA QUEUED
Error 268 occurred at disk power-on lifetime: 32193 hours (1341 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 00:08:40.204 READ FPDMA QUEUED
60 00 01 00 00 00 40 00 00:08:40.203 READ FPDMA QUEUED
60 00 01 00 00 00 40 00 00:08:40.203 READ FPDMA QUEUED
60 00 01 00 00 00 40 00 00:08:40.203 READ FPDMA QUEUED
60 00 01 00 00 00 40 00 00:08:40.203 READ FPDMA QUEUED
Error 267 occurred at disk power-on lifetime: 32193 hours (1341 days + 9 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 80 07 04 40 00 00:08:38.030 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 00:08:37.076 READ FPDMA QUEUED
60 00 08 ff ff ff 4f 00 00:08:37.076 READ FPDMA QUEUED
60 00 08 08 00 00 40 00 00:08:37.075 READ FPDMA QUEUED
60 00 08 00 00 00 40 00 00:08:37.075 READ FPDMA QUEUED
Error 266 occurred at disk power-on lifetime: 32192 hours (1341 days + 8 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
-- -- -- -- -- -- --
40 51 00 ff ff ff 0f Error: UNC at LBA = 0x0fffffff = 268435455
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
60 00 08 ff ff ff 4f 00 00:08:16.805 READ FPDMA QUEUED
60 00 08 80 07 04 40 00 00:08:16.805 READ FPDMA QUEUED
60 00 08 80 07 04 40 00 00:08:16.804 READ FPDMA QUEUED
60 00 02 08 08 00 40 00 00:08:16.804 READ FPDMA QUEUED
60 00 02 00 08 00 40 00 00:08:16.804 READ FPDMA QUEUED |
I have a replacement and my current plan is to
- Run a long selftest on the new drive (done, no errors reported)
- Partition the new drive as the old one (done)
- Power up system with new drive
- Add sda1/sda2 to the working sets
- Assemble sd[b-f]3 manually
- Add sda3 if successful
My question is if this is a safe thing to do in this state? |
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pgu Guru

Joined: 30 Jul 2009 Posts: 594 Location: Oslo, Norway
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Posted: Sun Aug 07, 2016 7:06 am Post subject: |
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I can't get to my mdadm.conf at the moment. |
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frostschutz Advocate


Joined: 22 Feb 2005 Posts: 2971 Location: Germany
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Posted: Sun Aug 07, 2016 9:26 am Post subject: |
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Yes, you can do it that way, good luck. |
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pgu Guru

Joined: 30 Jul 2009 Posts: 594 Location: Oslo, Norway
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Posted: Sun Aug 07, 2016 7:15 pm Post subject: |
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Thanks. Actually it came up and recognized the RAID when I booted with the replacement disk. Added the new drive and now it's back in its normal operational state. |
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frostschutz Advocate


Joined: 22 Feb 2005 Posts: 2971 Location: Germany
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Posted: Sun Aug 07, 2016 7:26 pm Post subject: |
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That's great. You should have a look at your mdadm.conf even so, if it's too verbose it can prevent successful assembly sometimes.
In my experience simple mdadm.conf works best, example:
Code: | MAILADDR your@address
ARRAY /dev/md0 UUID=d8b8b4e5:e47b2e45:2093cd36:f654020d |
You don't need name= metadata= or specific disk lists. The UUID alone is good. |
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