Hello!
I've ran into an issue mounting my /home due to this error:
`[ 1567.750050] BTRFS critical (device sdb5): corrupt leaf:
block=135314751488 slot=67 extent bytenr=101613793280 len=134217728
invalid generation, have 500462508591547182 expect (0, 222245]`
Now before seeing the note about contacting the mailing list, I did
run `btrfs check --repair /dev/sdb5`, though it did not find or
correct any errors.
Tried booting older kernels from snapshots and the issue persists.
Now some time between my restarts, the error trying to mount stopped
displaying the corrupt leaf error and now says there's an unclean
windows filesystem or just 'mount: /home: wrong fs type, bad option,
bad superblock on /dev/sdb5, missing codepage or helper program, or
other error.', but the partition is certainly btrfs.
Here's the required output:
```
kachna:/oops # uname -a
Linux kachna.kachna 5.4.10-1-default #1 SMP Thu Jan 9 15:45:45 UTC
2020 (556a6fe) x86_64 x86_64 x86_64 GNU/Linux
kachna:/oops # btrfs --version
btrfs-progs v5.4
kachna:/oops # btrfs fi show
Label: none uuid: 7dc4b27d-8946-418f-a790-a3eeeac213ba
Total devices 1 FS bytes used 23.54GiB
devid 1 size 30.00GiB used 27.55GiB path /dev/sdb3
Label: 'Home' uuid: 1c0257d6-77ea-4d0c-ad16-2b99114f4e5e
Total devices 1 FS bytes used 128.05GiB
devid 1 size 163.47GiB used 140.02GiB path /dev/sdb5
kachna:/oops # btrfs fi df /home
ERROR: not a btrfs filesystem: /home
```
I did read through some seemingly related mailing list threads, tried
running on individual RAM modules to see if one of them could be
faulty but nothing seems to make a difference.
Is there any way to recover the partition?
Cheers!
