On 11/09/2018 09:21 AM, Qu Wenruo wrote:
On 2018/11/9 上午6:40, Pieter Maes wrote:
Hello,
So, I've had the full disk issue, so when I tried re-balancing,
I got a panic, that pushed filesystem read-only and I'm unable to
balance or grow the filesystem now.
fs info:
btrfs fi show /
Label: none uuid: 9b591b6b-6040-437e-9398-6883ca3bf1bb
Total devices 1 FS bytes used 614.94GiB
devid 1 size 750.00GiB used 750.00GiB path /dev/mapper/vg0-root
btrfs fi df /
Data, single: total=740.94GiB, used=610.75GiB
System, DUP: total=32.00MiB, used=112.00KiB
Metadata, DUP: total=4.50GiB, used=3.94GiB
Metadata usage the the biggest problem.
It's already used up.
GlobalReserve, single: total=512.00MiB, used=255.06MiB
And the reserved space is also been used, that's a pretty bad news.
btrfs sub list -ta /
ID gen top level path
-- --- --------- ----
btrfs --version
btrfs-progs v4.4
Log when booting machine now from root:
----
[ 54.746700] ------------[ cut here ]------------
[ 54.746701] BTRFS: Transaction aborted (error -28)
Transaction can't even be done due to lack of space.
[snip]
----
When booting to a net/livecd rescue
First I run a check with repair:
----
enabling repair mode
Checking filesystem on /dev/vg0/root
UUID: 9b591b6b-6040-437e-9398-6883ca3bf1bb
checking extents
Fixed 0 roots.
checking free space cache
cache and super generation don't match, space cache will be invalidated
checking fs roots
reset nbytes for ino 6228034 root 5
It's a minor problem.
So the fs itself is still pretty health.
checking csums
checking root refs
found 664259596288 bytes used err is 0
total csum bytes: 619404608
total tree bytes: 4237737984
total fs tree bytes: 1692581888
total extent tree bytes: 1461665792
btree space waste bytes: 945044758
file data blocks allocated: 1568329531392
referenced 537131163648
----
But then when I try to mount the fs:
----
[snip]
rescue kernel: 4.9.120
----
I've grown the blockdevice, but there is no way I can grow the fs,
it doesn't want to mount in my rescue system, and it only mounts
read-only when booting from it, so I can't do it from there either
Btrfs-progs could do it with some extra dirty work.
(I purposed offline device resize idea, but didn't implement it yet)
You could use this branch:
https://github.com/adam900710/btrfs-progs/tree/dirty_fix
Qu,
The online resize should work here right?
Thanks, Anand
It's a quick and dirty fix to allow "btrfs-corrupt-block -X <device>" to
extent device size to max.
Please try above command to see if it solves your problem.
Thanks,
Qu
I hope someone can help me out with this.
Thanks!
