Hi,

> >> A btrfs filesystem failed to boot with this patch.
> >>
> >> corrupt leaf: root=3 block=1081344 slot=0 devid=1 invalid item
> >> size: has 0 expect 98
> >>
> >> Any way to fix it online?
> >
> > This btrfs filesystem is created by centos 7.9 installer (btrfs
> > 4.9?)
> > about 1 years ago.  and then mainly writen by kernel
> > 5.4/5.10/5.15.
> >
> Yes, btrfs-progs v4.9 and v3.10 based kernel.
> I created a btrfs and it looks fine.
> Could please provide output of
> btrfs inspect-internal dump-tree $device -t 3
> ?
> You can trim it if the content is too long only leaf 1081344 is needed.

Hi,

# btrfs filesystem show /
Label: 'OS_T640'  uuid: 73dcce98-8f6b-4ec8-bfac-fa7c7c87409d
        Total devices 10 FS bytes used 5.53TiB
        devid    1 size 799.00GiB used 332.01GiB path /dev/sda2
        devid    2 size 1.75TiB used 741.00GiB path /dev/sdg1
        devid    3 size 1.75TiB used 745.00GiB path /dev/sdj1
        devid    4 size 1.75TiB used 740.00GiB path /dev/sdi1
        devid    5 size 1.75TiB used 745.00GiB path /dev/sdd1
        devid    6 size 1.75TiB used 480.00GiB path /dev/sde1
        devid    7 size 1.75TiB used 480.00GiB path /dev/sdh1
        devid    8 size 1.75TiB used 479.00GiB path /dev/sdc1
        devid    9 size 1.75TiB used 480.00GiB path /dev/sdb1
        devid   10 size 1.75TiB used 479.00GiB path /dev/sdf1

#btrfs inspect-internal dump-tree /dev/sda2 -t 3 > 3.txt

and then 3.txt is zipped as  this attachment file(3.zip)

Best Regards
Wang Yugui (wangyugui@e16-tech.com)
2022/02/05