I have a nvme cache group giving me unmountable filesystem, did a btrfs check got:

[1/7] checking root items

[2/7] checking extents data extent[229478363136, 4096] referencer count mismatch (root 5 owner 11615 offset 6287060992) wanted 0 have 1 data extent[229478363136, 4096] bytenr mimsmatch, extent item bytenr 229478363136 file item bytenr 0 data extent[229478363136, 4096] referencer count mismatch (root 18446612689990036152 owner 11615 offset 6287060992) wanted 1 have 0 backpointer mismatch on [229478363136 4096] ERROR: errors found in extent allocation tree or chunk allocation

[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) Opening filesystem to check... Checking filesystem on /dev/nvme0n1p1 UUID: 0d203e71-2df2-4271-baa4-f9fe14ceaa7a found 2341966770176 bytes used, error(s) found total csum bytes: 2089471720 total tree bytes: 5887492096 total fs tree bytes: 2449768448 total extent tree bytes: 684326912 btree space waste bytes: 1011104818 file data blocks allocated: 25306182819840 referenced 2259930390528

 

i tried to run a --repair but its saying i need to press Y or N for log deletion but unable to press Y or N?

 

any help would be great.

 

enabling repair mode

WARNING: Do not use --repair unless you are advised to do so by a developer

or an experienced user, and then only after having accepted that no

fsck can successfully repair all types of filesystem corruption. E.g.

some software or hardware bugs can fatally damage a volume.

The operation will start in 10 seconds. Use Ctrl-C to stop it. 10 9 8 7 6 5 4 3 2 1

Starting repair. Opening filesystem to check...

Checking filesystem on /dev/nvme0n1p1 UUID: 0d203e71-2df2-4271-baa4-f9fe14ceaa7a

repair mode will force to clear out log tree, are you sure? [y/N]:

i fixed this, ran repair in console manually.