Hi all,
I have a question about replacing a drive in raid10 (and linux kernel 3.8.4).
A bad disk was physical removed from the server. After this a new disk
was added with "btrfs device add /dev/sdg /btrfs" to the raid10 btrfs
FS.
After this the server was rebooted and I mounted the filesystem in
degraded mode. It seems that a previous started balance continued.
At this point I want to remove the missing device from the pooI (btrfs
device delete missing /btrfs). Is this safe to do ?
The disk usage numbers look weird to me, also the limited amount of
data written to the new disk after the balance.
And I think the balance also failed.
All data is still accessible and I hope this stays the case after
removing the missing device :)
"Mar 27 17:41:06 SANOS1 kernel: btrfs: allowing degraded mounts
Mar 27 17:41:06 SANOS1 kernel: btrfs: disk space caching is enabled
Mar 27 17:41:06 SANOS1 kernel: btrfs: bdev (null) errs: wr 3243008, rd
2, flush 430, corrupt 0, gen 0
Mar 27 17:41:06 SANOS1 kernel: btrfs: bdev /dev/sdl errs: wr 144, rd
0, flush 48, corrupt 129, gen 41
Mar 27 17:41:06 SANOS1 kernel: btrfs: bdev /dev/sdk errs: wr 0, rd 5,
flush 0, corrupt 0, gen 0
Mar 27 17:41:10 SANOS1 kernel: btrfs: continuing balance
Mar 27 17:41:18 SANOS1 kernel: btrfs: relocating block group
4541886169088 flags 65
Mar 27 17:41:41 SANOS1 kernel: btrfs: found 1956 extents
Mar 27 17:42:03 SANOS1 kernel: btrfs: found 1954 extents
"
# mount | grep btrfs
/dev/sdd on /btrfs type btrfs (rw,relatime,degraded,space_cache)
# btrfs filesystem df /btrfs/
Data, RAID10: total=2.60TB, used=2.57TB
System, RAID10: total=63.88MB, used=244.00KB
System: total=4.00MB, used=0.00
Metadata, RAID10: total=11.00GB, used=8.51GB
# btrfs filesystem show
Label: 'firstpool' uuid: 517e8cfa-4275-4589-8da4-6a46ad613daa
Total devices 15 FS bytes used 2.58TB
devid 13 size 931.51GB used 381.58GB path /dev/sdp
devid 14 size 931.51GB used 381.58GB path /dev/sdq
devid 12 size 931.51GB used 381.58GB path /dev/sdo
devid 11 size 931.51GB used 381.58GB path /dev/sdn
devid 10 size 931.51GB used 381.58GB path /dev/sdm
devid 9 size 931.51GB used 381.58GB path /dev/sdl
devid 8 size 931.51GB used 380.58GB path /dev/sdk
devid 7 size 931.51GB used 380.58GB path /dev/sdj
devid 16 size 931.51GB used 20.44GB path /dev/sdg
devid 6 size 931.51GB used 381.58GB path /dev/sdi
devid 5 size 931.51GB used 381.58GB path /dev/sdh
devid 15 size 931.51GB used 380.58GB path /dev/sdf
devid 2 size 931.51GB used 381.58GB path /dev/sde
devid 1 size 931.51GB used 380.58GB path /dev/sdd
*** Some devices missing
# btrfs filesystem balance status -v /btrfs/
ERROR: balance status on '/btrfs/' failed - Not in progress
Btrfs progs = v0.19+
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
