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Unmountable disk present

Featured Replies

Hi, 

 

I'd had 40+ days uptime but an i/o error so tried a reboot but now get an Unmountable disk present error.

 

Diagnostics attached - would appreciate any suggestions.

 

Strangely the array starts and nothing is emulated

wopr-diagnostics-20221231-0327.zip

Edited by folic86

Solved by trurl

  • Author
2 minutes ago, trurl said:

Check filesystem on disk9

Quote
Quote
Phase 1 - find and verify superblock...
        - block cache size set to 1405232 entries
Phase 2 - using internal log
        - zero log...
zero_log: head block 2277807 tail block 2277803
ALERT: The filesystem has valuable metadata changes in a log which is being
ignored because the -n option was used.  Expect spurious inconsistencies
which may be resolved by first mounting the filesystem to replay the log.
        - scan filesystem freespace and inode maps...
agf_freeblks 2113990, counted 2130358 in ag 8
agf_freeblks 5972432, counted 5965260 in ag 1
sb_ifree 25068, counted 25065
sb_fdblocks 276419936, counted 294386184
        - found root inode chunk
Phase 3 - for each AG...
        - scan (but don't clear) agi unlinked lists...
        - process known inodes and perform inode discovery...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
        - agno = 4
        - agno = 5
        - agno = 6
        - agno = 7
        - agno = 8
        - agno = 9
        - agno = 10
        - agno = 11
        - agno = 12
        - agno = 13
        - agno = 14
        - agno = 15
        - agno = 16
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
free space (1,227963528-227966967) only seen by one free space btree
free space (1,227969448-227973179) only seen by one free space btree
        - check for inodes claiming duplicate blocks...
        - agno = 2
        - agno = 4
        - agno = 5
        - agno = 3
        - agno = 6
        - agno = 1
        - agno = 0
        - agno = 8
        - agno = 10
        - agno = 7
        - agno = 9
        - agno = 11
        - agno = 12
        - agno = 13
        - agno = 14
        - agno = 15
        - agno = 16
setting reflink flag on inode 17181236961
Missing reference count record for (12/60941802) len 262096 count 2
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
        - traversing filesystem ...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
        - agno = 4
        - agno = 5
        - agno = 6
        - agno = 7
        - agno = 8
        - agno = 9
        - agno = 10
        - agno = 11
        - agno = 12
        - agno = 13
        - agno = 14
        - agno = 15
        - agno = 16
        - traversal finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
Maximum metadata LSN (2:2289784) is ahead of log (2:2277807).
Would format log to cycle 5.
No modify flag set, skipping filesystem flush and exiting.

        XFS_REPAIR Summary    Sat Dec 31 03:38:23 2022

Phase		Start		End		Duration
Phase 1:	12/31 03:37:47	12/31 03:37:47
Phase 2:	12/31 03:37:47	12/31 03:37:48	1 second
Phase 3:	12/31 03:37:48	12/31 03:38:21	33 seconds
Phase 4:	12/31 03:38:21	12/31 03:38:21
Phase 5:	Skipped
Phase 6:	12/31 03:38:21	12/31 03:38:23	2 seconds
Phase 7:	12/31 03:38:23	12/31 03:38:23

Total run time: 36 seconds

 

Ok, what is the best option now?

 

  • Community Expert
  • Solution
5 minutes ago, folic86 said:
No modify flag set

Do it again without -n, if it asks for it add -L

 

 

  • Author

Thanks @trurl - seems to have worked with -L. Will that have lost data though??

  • Community Expert
21 minutes ago, folic86 said:
mounting the filesystem to replay the log

The repair utility doesn't know Unraid already failed to mount the filesystem so no choice but to delete the log.

 

Check if you have a lost+found share now

  • Author

Nothing on the shares list, do I need to use terminal? Krusader also can't see one in the media folder where all other shares are.....

shares.PNG

  • Author

Also not on disk 9 itself

 

mnt.thumb.PNG.675042cb9902639676f02073a2b740bd.PNG

  • Community Expert

👍

  • Author

@trurl I rebooted again, and have the same disk as unmountable again. Any suggestions what I can do? Maybe swap the Sata cable? A data rebuild from parity??

wopr-diagnostics-20230102-0315.zip

Edited by folic86

  • Community Expert

Rebuild won't fix unmountable.

On 12/30/2022 at 10:36 PM, trurl said:

Check filesystem on disk9

Have you done memtest recently?

  • Author
4 minutes ago, trurl said:

Rebuild won't fix unmountable.

Have you done memtest recently?

I have not. Can you remind me how?

  • Community Expert
28 minutes ago, folic86 said:

I have not. Can you remind me how?

It is an option on the Unraid boot menu.    If you use UEFI boot then you should download the latest version from the memtest site and use that instead.

  • Author
On 1/2/2023 at 4:06 AM, itimpi said:

It is an option on the Unraid boot menu.    If you use UEFI boot then you should download the latest version from the memtest site and use that instead.

Great, thanks I am running that now. It took me a while as I forgot my cpu doesn't have inbuilt gfx and couldn't find my mini DP convertor for my P400 ahaha. 

 

Will post results when I get them.

  • Author
5 hours ago, folic86 said:

Great, thanks I am running that now. It took me a while as I forgot my cpu doesn't have inbuilt gfx and couldn't find my mini DP convertor for my P400 ahaha. 

 

Will post results when I get them.

So memtest passed with 0 errors. Any other suggestions @trurl @itimpi?

 

Try the basic stuff like cables?

  • Community Expert

Update to v6.11.5 and run xfs_repair again, then if it happens again to the same disk suggest backing it up and reformatting to create a new filesystem.

  • Author
4 hours ago, JorgeB said:

Update to v6.11.5 and run xfs_repair again, then if it happens again to the same disk suggest backing it up and reformatting to create a new filesystem.

How would I go about backing it up if it's unmountable?

  • Community Expert
3 minutes ago, folic86 said:

run xfs_repair again

 

  • Author

@JorgeB so I did that and it gave me the same issue with the log as previously in the thread. I have run it as -L and it now mounts with no evidence on the drive of a lost+found.

 

But this is the same place I was, before I had the same issue and had to restart all of this. So I'm still puzzled as to what is going on? 

 

If I try another restart in a few days, could I not just have the same issue? 

  • Community Expert
10 minutes ago, folic86 said:

But this is the same place I was, before

 

5 hours ago, JorgeB said:

Update to v6.11.5 and run xfs_repair again, then if it happens again to the same disk suggest backing it up and reformatting to create a new filesystem.

 

  • 2 weeks later...
  • Author
On 1/4/2023 at 4:28 PM, JorgeB said:

 

 

Hey Jorge, 

 

Same issue unfortunately again - reported 5206 udma errors, disabled the drive and on reboot is unmountable due to filesystem error, so I guess I need to back it up - is there an easy way? I don't have a spare sata port, but do (I think) have an 18tb drive

  • Community Expert

Btrfs is also detecting data corruption, start by running memtest.

  • Author
5 minutes ago, JorgeB said:

Btrfs is also detecting data corruption, start by running memtest.

I've already done that. Didn't report any issues.

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