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couldn't open RDWR because of unsupported option features (3).


Question

Hello.

Broken write and read cache in the storage. There are disks but writes that there is no cache and the disk is not available. Tried it in ubuntu:

 

 

root@ubuntu:/home/root# mdadm -D /dev/md2
/dev/md2:
           Version : 1.2
     Creation Time : Tue Dec  8 23:15:41 2020
        Raid Level : raid5
        Array Size : 7794770176 (7433.67 GiB 7981.84 GB)
     Used Dev Size : 1948692544 (1858.42 GiB 1995.46 GB)
      Raid Devices : 5
     Total Devices : 5
       Persistence : Superblock is persistent

       Update Time : Tue Jun 22 22:16:38 2021
             State : clean 
    Active Devices : 5
   Working Devices : 5
    Failed Devices : 0
     Spare Devices : 0

            Layout : left-symmetric
        Chunk Size : 64K

Consistency Policy : resync

              Name : memedia:2
              UUID : ae85cc53:ecc1226b:0b6f21b5:b81b58c5
            Events : 34754

 

 

root@ubuntu:/home/root# btrfs-find-root /dev/vg1/volume_1
parent transid verify failed on 20971520 wanted 48188 found 201397
parent transid verify failed on 20971520 wanted 48188 found 201397
parent transid verify failed on 20971520 wanted 48188 found 201397
parent transid verify failed on 20971520 wanted 48188 found 201397
Ignoring transid failure
parent transid verify failed on 2230861594624 wanted 54011 found 196832
parent transid verify failed on 2230861594624 wanted 54011 found 196832
parent transid verify failed on 2230861594624 wanted 54011 found 196832
parent transid verify failed on 2230861594624 wanted 54011 found 196832
Ignoring transid failure
Couldn't setup extent tree
Couldn't setup device tree
Superblock thinks the generation is 54011
Superblock thinks the level is 1

Well block 2095916859392(gen: 218669 level: 1) seems good, but generation/level doesn't match, want gen: 54011 level: 1
Well block 2095916580864(gen: 218668 level: 1) seems good, but generation/level doesn't match, want gen: 54011 level: 1
Well block 2095916056576(gen: 218667 level: 1) seems good, but generation/level doesn't match, want gen: 54011 level: 1
Well block 2095915335680(gen: 218666 level: 1) seems good, but generation/level doesn't match, want gen: 54011 level: 1

 

root@ubuntu:/home/root# btrfs check --repair -r 2095916859392 -s 1 /dev/vg1/volume_1
enabling repair mode
using SB copy 1, bytenr 67108864
couldn't open RDWR because of unsupported option features (3).
ERROR: cannot open file system

 

root@ubuntu:/home/root# btrfs check --clear-space-cache v1 /dev/mapper/vg1-volume_1
couldn't open RDWR because of unsupported option features (3).
ERROR: cannot open file system

 

root@ubuntu:/home/root# btrfs check --clear-space-cache v2 /dev/mapper/vg1-volume_1
couldn't open RDWR because of unsupported option features (3).
ERROR: cannot open file system

 

root@ubuntu:/home/root# mount -o recovery /dev/vg1/volume_1 /mnt/volume1/
mount: /mnt/volume1: wrong fs type, bad option, bad superblock on /dev/mapper/vg1-volume_1, missing codepage or helper program, or other error.

 

All possible commands are answered:

 

couldn't open RDWR because of unsupported option features (3).

 

Tell me - something can be recovered from such an array?

Thank you very much in advance!

 

Edited by ADMiNZ
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IMHO there is no reason not to do this in DSM; Ubuntu is not helping you.

 

However, syntax is inconsistent between your diagnostic/recovery commands.  Start with that.

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