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after upgrading to 7 then downgrading back to 6.12.14, cache drive reporting Unmountable: Unsupported or no file system

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I performed an upgrade from 6.12.14 to 7.0.0 but after the upgrade I couldn't run my Plex Server Docker image.  It would fail so I downgraded back to 6.12.14.  after downgrading my cache drive is reported as Unmountable: Unsupported or no file system.  Of course that is where all my docker images are stored.

 

Attached is the diagnostics zip.

coraid-diagnostics-20250113-0601.zip

  • Community Expert

Syslog is full of NFS connection related issues and already rotated, cannot see the pool mount error, reboot and post new diags after array start.

I've just upgraded to 7 from the previous 6.. stable version. I also am getting "Unmountable: Unsupported or no file system" on my cache drive. I've poured through the forums, reddit, google etc, but nothing has worked so far. Attached is my diagnostics, any help would be very much appreciated. 

djnas-diagnostics-20250114-1132.zip

  • Community Expert
9 hours ago, perk said:

Updated diagnostics, hope this helps

Type 

btrfs rescue zero-log /dev/sdn1

 

Then restart the array and post new diags

  • Community Expert
7 hours ago, DaveTheTechDad said:

I've just upgraded to 7 from the previous 6.. stable version. I also am getting "Unmountable: Unsupported or no file system" on my cache drive.

Different error, to avoid confusion with the OP, please start a new thread and repost the diags there.

Thanks JorgeB. I'll start a new thread. :)

 

  • Author
14 hours ago, JorgeB said:

Type 

btrfs rescue zero-log /dev/sdn1

 

Then restart the array and post new diags

here are the updated diags.

coraid-diagnostics-20250114-1653.zip

  • Author
39 minutes ago, perk said:

JorgeB, after restarting the array, the cache does come up but it is read-only.  Crossing my fingers you might have a suggestion on how to fix the errors.  I will start looking for a replacement ssd, just in case.

  • Community Expert

Not seeing anything that suggests a device problem, but there are more filesystem issues:

 

Jan 14 16:49:07 CoRaid kernel: BTRFS error (device sdn1): incorrect extent count for 827876966400; counted 2037, expected 2024
Jan 14 16:49:07 CoRaid kernel: BTRFS error (device sdn1): incorrect extent count for 940619857920; counted 3012, expected 3003

 

With btrfs, recommend backing up the cache and then reformatting.

  • Author
14 hours ago, JorgeB said:

Not seeing anything that suggests a device problem, but there are more filesystem issues:

 

Jan 14 16:49:07 CoRaid kernel: BTRFS error (device sdn1): incorrect extent count for 827876966400; counted 2037, expected 2024
Jan 14 16:49:07 CoRaid kernel: BTRFS error (device sdn1): incorrect extent count for 940619857920; counted 3012, expected 3003

 

With btrfs, recommend backing up the cache and then reformatting.

what's the best way?

 

I will start by trying a simple copy from the cache to the raid, but if you know a better way let me know.

  • Community Expert
9 hours ago, perk said:

what's the best way?

Just use your favorite tool to try and coy all the data somewhere else.

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