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Back again with BTRFS errors

Featured Replies

  • Community Expert
1 hour ago, DuzAwe said:

Looks like the first error was just cache then loop2 later?

Correct, cache filesystem corrupted first, then it's normal to cause issues with any images using it.

  • Author

A reboot seems to have put everything back to normal? Scrub came back with nothing. 

 

Should a reboot have done that?

  • Community Expert

Sometimes rebooting can temporarily help, but you'll likely run into issues again.

  • Author

Anything in the logs to point at what it is? The disk have run fine for months the rc for 6.9 is when this stuff started.

  • Community Expert
3 minutes ago, DuzAwe said:

Scrub came back with nothing. 

Also, a scrub only checks data and metadata consistency, it doesn't look for filesystem corruption you can do that with the pool offline by typing:

 

btrfs check /dev/sdX1

 

Note that if errors are found running btrfs check in repair model (btrfs check --repair) is considered dangerous, should only be done if told so.

  • Community Expert
2 minutes ago, DuzAwe said:

Anything in the logs to point at what it is?

Not that I can see, only that corruption was detected.

  • Author
1 minute ago, JorgeB said:

Also, a scrub only checks data and metadata consistency, it doesn't look for filesystem corruption you can do that with the pool offline by typing:

 


btrfs check /dev/sdX1

 

Note that if errors are found running btrfs check in repair model (btrfs check --repair) is considered dangerous, should only be done if told so.

 

Comes back with:

root@thelibrary:~# btrfs check /dev/sdX1
Opening filesystem to check...
ERROR: mount check: cannot open /dev/sdX1: No such file or directory
ERROR: could not check mount status: No such file or directory

  • Community Expert
2 minutes ago, DuzAwe said:

 

Comes back with:

root@thelibrary:~# btrfs check /dev/sdX1
Opening filesystem to check...
ERROR: mount check: cannot open /dev/sdX1: No such file or directory
ERROR: could not check mount status: No such file or directory

You have to replace 'X' with the correct letter for the drive as shown in the unPaid GUI.

 

  • Community Expert

You need to replace X with correct letter, and since it's an NVMe device it would be:

 

btrfs check /dev/nvme1n1p1

 

  • Author

Well I feel like a fool. Ok Looks clean.

 

Opening filesystem to check...
Checking filesystem on /dev/nvme1n1p1
UUID: cdb12f2a-8005-48a1-b8f7-bd0e1fc9fd43
[1/7] checking root items
[2/7] checking extents
[3/7] checking free space tree
[4/7] checking fs roots
[5/7] checking only csums items (without verifying data)
[6/7] checking root refs
[7/7] checking quota groups skipped (not enabled on this FS)
found 266705154048 bytes used, no error found
total csum bytes: 225909672
total tree bytes: 698073088
total fs tree bytes: 379420672
total extent tree bytes: 46546944
btree space waste bytes: 119030509
file data blocks allocated: 2601829400576
 referenced 262717333504

 

  • Community Expert

That looks all fine to me.

  • Author

Welp, Thanks for your help again. I guess Ill be back at some point. 

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