Hello every one,
I have a huge problem. I started to grow a array with ( the added device
is /dev/sde )
# mdadm --grow --raid-devices=13 /dev/md0 --backup-file=md0.bak
after that there way 0 disk activity so i checked it with
# cat /proc/mdstat
everything looked fine but speed was 0K/sec for about 1-2 hours. I
decided to reboot the system as grow should continue after that. After
that the array wasn't assembled at all. So i wanted to do it myself:
# mdadm --assemble /dev/md0 /dev/sd[b-n] --backup-file=md0.bak --verbose
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 10.
mdadm: /dev/sde is identified as a member of /dev/md0, slot 12.
mdadm: /dev/sdf is identified as a member of /dev/md0, slot 11.
mdadm: /dev/sdg is identified as a member of /dev/md0, slot 2.
mdadm: /dev/sdh is identified as a member of /dev/md0, slot 3.
mdadm: /dev/sdi is identified as a member of /dev/md0, slot 4.
mdadm: /dev/sdj is identified as a member of /dev/md0, slot 5.
mdadm: /dev/sdk is identified as a member of /dev/md0, slot 6.
mdadm: /dev/sdl is identified as a member of /dev/md0, slot 7.
mdadm: /dev/sdm is identified as a member of /dev/md0, slot 8.
mdadm: /dev/sdn is identified as a member of /dev/md0, slot 9.
mdadm: :/dev/md0 has an active reshape - checking if critical section
needs to be restored
mdadm: No backup metadata on md0.bak
mdadm: No backup metadata on device-12
mdadm: Failed to find backup of critical section
mdadm: Failed to restore critical section for reshape, sorry.
Backup looks broken. What can i do ?
# mdadm --version
mdadm - v3.3.2 - 21st August 2014
# uname -a
Linux claw-storage 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u3
(2015-08-04) x86_64 GNU/Linux
# du -sch md0.bak
56M md0.bak
# mdadm --examine /dev/sd[b-n]
/dev/sdb:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=976752816 sectors
State : clean
Device UUID : f3d9392c:a9290f8e:4ded7efc:284b4ecf
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 11cb12c0 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdc:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=976752816 sectors
State : clean
Device UUID : a5b4533d:d5a4cdc5:e6dcd3aa:4a845044
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 7dfa9159 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdd:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=976752816 sectors
State : clean
Device UUID : d39aede2:af92f321:8b6fbd9f:45c73ddf
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : f913b0b - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 10
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sde:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262056 sectors, after=976752816 sectors
State : clean
Device UUID : 13fcdab1:69ce4358:5f1ee2b2:c809b990
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : d976c9a6 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 12
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdf:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=976752816 sectors
State : clean
Device UUID : 487f70bd:b63c29d6:185aa418:208dc16d
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : a5b479ef - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 11
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdg:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 2930015024 (1397.14 GiB 1500.17 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=816 sectors
State : clean
Device UUID : b798e990:6b50f1a0:3cde1ced:3a20dfaf
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 2053b0c9 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdh:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 2930015024 (1397.14 GiB 1500.17 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=816 sectors
State : clean
Device UUID : bfe03a04:fda138cc:ef11727c:ff1b58d2
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 70ba79db - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdi:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=976752816 sectors
State : clean
Device UUID : 4fdb8a05:3157bd26:f93ee8d7:fdd42f9f
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 2f151d28 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdj:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 2930015024 (1397.14 GiB 1500.17 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=816 sectors
State : clean
Device UUID : 6010b774:e02b08ed:29484f97:b03e8a48
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 93158c4c - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdk:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 2930015024 (1397.14 GiB 1500.17 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=816 sectors
State : clean
Device UUID : afab65ff:a79ed9e7:30ccd918:e2e1c21a
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 6c58c19c - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 6
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdl:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262056 sectors, after=976752816 sectors
State : clean
Device UUID : 8a9031cf:f9b5a888:70363d53:b269047d
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : b3d8bda7 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 7
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdm:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 2930015024 (1397.14 GiB 1500.17 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=816 sectors
State : clean
Device UUID : 1eefdd8c:75b58c0c:f0c555bd:e704e89e
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : 472538a0 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 8
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
/dev/sdn:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : 633c1520:61c07f69:26a83b45:b9756587
Name : claw-storage:0 (local to host claw-storage)
Creation Time : Tue Jan 14 12:48:49 2014
Raid Level : raid6
Raid Devices : 13
Avail Dev Size : 2930015024 (1397.14 GiB 1500.17 GB)
Array Size : 16115078144 (15368.54 GiB 16501.84 GB)
Used Dev Size : 2930014208 (1397.14 GiB 1500.17 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=816 sectors
State : clean
Device UUID : b8f9a259:c4522982:88538283:497eed43
Reshape pos'n : 0
Delta Devices : 1 (12->13)
Update Time : Thu Aug 13 17:11:05 2015
Checksum : f4b8e783 - correct
Events : 72402
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 9
Array State : AAAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
--
Viele Grüße,
Daniel Koch
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