Hi again.
I had a drive disappear off the bus while I was out of town. I just
Pulled it and installed a replacement drive. The problem is that
another drive was kicked when I pulled the failed drive.
Looking at the array info, it should be re-add'able, the event counts
are very close.
Thinking I'm smarter than I really am, I tried a:
$ mdadm --manage /dev/md0 --re-add /dev/sdb
But that returned with device or resource busy, obviously the
array is still holding onto it. Then I:
$ mdadm --remove /dev/md0 /dev/sdb
$ mdadm --manage /dev/md0 --re-add /dev/sdb
But that just added it as a spare, and wiped the slot/role data that
was once in the --examine output.
After that I tried force assembling, but it refused saying it only found
5 active and 1 spare device which is not enough to start the array.
Is there a way to convince mdadm to assemble this into a working
degraded array?
Also, sdc has a much lower event count than the other drives, is that
normal?
/dev/sdc is the first drive that failed
/dev/sdb is the one that was kicked after
mdstat:
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdb[0](F) sdh[7] sdg[5] sdf[4] sde[3] sdd[2] sdc[1](F)
11720297472 blocks super 1.2 level 5, 512k chunk, algorithm 2 [7/5] [__UUUUU]
bitmap: 15/15 pages [60KB], 65536KB chunk
mdadm --examine:
/dev/sdb:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0 (local to host mrbig)
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : c1efb1f8:edd4ab44:c8b95abd:6b1cdbf8
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Aug 6 18:28:32 2015
Checksum : b1dea42e - correct
Events : 2053
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : A.AAAAA ('A' == active, '.' == missing)
/dev/sdd:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0 (local to host mrbig)
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 32917d29:916c3a57:41d93b82:6790c6bb
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Aug 6 21:42:20 2015
Checksum : 7d069e27 - correct
Events : 2057
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : ..AAAAA ('A' == active, '.' == missing)
/dev/sde:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0 (local to host mrbig)
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 7b68d82f:68da74b2:01837fec:ab08918e
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Aug 6 21:42:20 2015
Checksum : 1baa054d - correct
Events : 2057
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : ..AAAAA ('A' == active, '.' == missing)
/dev/sdf:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0 (local to host mrbig)
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 27de04b5:e5eabe72:e7f1ada8:36402334
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Aug 6 21:42:20 2015
Checksum : c2e131e7 - correct
Events : 2057
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : ..AAAAA ('A' == active, '.' == missing)
/dev/sdg:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0 (local to host mrbig)
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 001e01c6:7482a410:83a61537:05eb9308
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Aug 6 21:42:20 2015
Checksum : d49b68ba - correct
Events : 2057
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : ..AAAAA ('A' == active, '.' == missing)
/dev/sdh:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0 (local to host mrbig)
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : e1553922:dbf9da9f:060762fa:c6786762
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Aug 6 21:42:20 2015
Checksum : dd2a0649 - correct
Events : 2057
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 6
Array State : ..AAAAA ('A' == active, '.' == missing)
/dev/sdj: (was /dev/sdc, its installed in a different machine now)
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c8032dba:053904e3:1648d92b:0695b265
Name : mrbig:0
Creation Time : Sun Jun 14 14:06:22 2015
Raid Level : raid5
Raid Devices : 7
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 11720297472 (11177.35 GiB 12001.58 GB)
Used Dev Size : 3906765824 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=1200 sectors
State : clean
Device UUID : 9f42a955:9a978bd1:baf8290b:d397e4f2
Internal Bitmap : 8 sectors from superblock
Update Time : Fri Jul 31 16:27:56 2015
Checksum : e389672e - correct
Events : 101
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
Distro: Debian Sid
Kernel: 3.16.7-ckt4-3~bpo70+1
Mdadm: v3.2.5 (from debian)
--
Thomas Fjellstrom
thomas@xxxxxxxxxxxxx
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