Raid1 split clean/degraded

DummyHead · 12. August 2016

Hi all
After last night weekly reboot, today I've got a split clean/degraded raid.
I think I didn't built it good at start, and now I've got this trouble.
Any help will be welcome.

There's my outputs

Code

root@omv:~# cat /proc/mdstat
Personalities : [raid1]
md127 : active (auto-read-only) raid1 sdb1[0]
      976630272 blocks super 1.2 [2/1] [U_]


md0 : active raid1 sda1[2]
      976630272 blocks super 1.2 [2/1] [_U]


unused devices: <none>

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Code

root@omv:~# blkid
/dev/sda1: UUID="ae5367fc-cb91-4e2f-959f-89ca2761b302" TYPE="ext4" LABEL="RAID2"
/dev/sdb1: UUID="9cc05082-eb0c-81a3-8a6d-e2b38bff6c7f" UUID_SUB="fe67fb12-b7c9-b007-6e7f-4009e9a7c0e6" LABEL="omv:0" TYPE="linux_raid_member"
/dev/sdc1: LABEL="Media" UUID="a915c5d4-d6f3-4a46-a93f-ed2cc30bd4ec" TYPE="ext4"
/dev/sdd1: LABEL="3TB" UUID="865844eb-d9c4-427f-badd-d57a09a652bc" TYPE="ext4"
/dev/sde1: LABEL="3TB" UUID="ce82cbd6-c5ef-494a-8cf3-0c09fd23abd0" TYPE="ext4"
/dev/sde2: LABEL="MP3" UUID="43b40d65-511f-4c9b-9995-ae28c6ee5b5a" TYPE="ext4"
/dev/md0: LABEL="RAID" UUID="9d2b7b1d-50fc-4400-9a17-8033849fa72e" TYPE="ext4"
/dev/md127: LABEL="RAID" UUID="9d2b7b1d-50fc-4400-9a17-8033849fa72e" TYPE="ext4"

Code

root@omv:~# fdisk -l


WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.




Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
256 heads, 63 sectors/track, 121126 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1  1953525167   976762583+  ee  GPT
Partition 1 does not start on physical sector boundary.


WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.




Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1  1953525167   976762583+  ee  GPT
Partition 1 does not start on physical sector boundary.


Disk /dev/sdc: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00085558


   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1            2048   976773119   488385536   83  Linux


WARNING: GPT (GUID Partition Table) detected on '/dev/sdd'! The util fdisk doesn't support GPT. Use GNU Parted.




Disk /dev/sdd: 3000.6 GB, 3000592982016 bytes
256 heads, 63 sectors/track, 363376 cylinders, total 5860533168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1  4294967295  2147483647+  ee  GPT
Partition 1 does not start on physical sector boundary.


Disk /dev/sde: 163.9 GB, 163928604672 bytes
255 heads, 63 sectors/track, 19929 cylinders, total 320173056 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0008519b


   Device Boot      Start         End      Blocks   Id  System
/dev/sde1            2048    40962047    20480000   83  Linux
/dev/sde2        40962048   320172031   139604992   83  Linux


Disk /dev/md0: 1000.1 GB, 1000069398528 bytes
2 heads, 4 sectors/track, 244157568 cylinders, total 1953260544 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/md0 doesn't contain a valid partition table


Disk /dev/md127: 1000.1 GB, 1000069398528 bytes
2 heads, 4 sectors/track, 244157568 cylinders, total 1953260544 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/md127 doesn't contain a valid partition table

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Code

root@omv:~# mdadm --detail --scan --verbose
ARRAY /dev/md/0 level=raid1 num-devices=2 metadata=1.2 name=omv:0 UUID=9cc05082:eb0c81a3:8a6de2b3:8bff6c7f
   devices=/dev/sda1
mdadm: cannot open /dev/md/0_0: No such file or directory

DummyHead · 13. August 2016

Tried this

Code

root@omv:~# mdadm --stop /dev/md127                                                                                                                                                                                            
mdadm: stopped /dev/md127

Code

root@omv:~# mdadm --zero-superblock /dev/sdb                                                                                                                                                                                   
mdadm: Unrecognised md component device - /dev/sdb

So, I'm stuck...

Any help? Again?

ryecoaaron · 13. August 2016

The problem is your array is using partitions (you didn't create with OMV). You want to zero the superblock on the partition instead of the entire disk. mdadm --zero-superblock /dev/sdb1

DummyHead · 14. August 2016

Thanks a lot!

Finally, I've rebuilt the array by wiping one disk at time, no partition, recover raid. Seems works ok now.

Thanks again for your time helping the community!

PD: Should mark this thread as Solved?

ryecoaaron · 14. August 2016

Yep, I would add the Resolved tag.

Raid1 split clean/degraded

Jetzt mitmachen!

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