Hi,
I added a new drive to an existing RAID 0 array. Every
attempt to rebalance the array fails:
# btrfs filesystem balance /share/bd8
ERROR: error during balancing '/share/bd8' - Input/output error
# dmesg | tail
btrfs: found 1 extents
btrfs: relocating block group 10752513540096 flags 1
btrfs: found 5 extents
btrfs: found 5 extents
btrfs: relocating block group 10751439798272 flags 1
btrfs: found 1 extents
btrfs: found 1 extents
btrfs: relocating block group 10048138903552 flags 1
btrfs csum failed ino 365 off 221745152 csum 3391451932 private 3121065028
btrfs csum failed ino 365 off 221745152 csum 3391451932 private 3121065028
An earlier rebalance attempt had the same csum error on a different inode:
btrfs csum failed ino 312 off 221745152 csum 3391451932 private 3121065028
btrfs csum failed ino 312 off 221745152 csum 3391451932 private 3121065028
Every rebalance attempt fails the same way, but with a different inum.
Here is the array:
# btrfs filesystem show
Label: 'bd8' uuid: b39f475f-3ebf-40ea-b088-4ce7f4d4d8f4
Total devices 4 FS bytes used 7.37TB
devid 4 size 3.64TB used 52.00GB path /dev/sde
devid 1 size 3.64TB used 3.32TB path /dev/sdf1
devid 3 size 3.64TB used 2.92TB path /dev/sdc
devid 2 size 3.64TB used 2.97TB path /dev/sdb
While I didn't finish the scrub, no errors were found:
# btrfs scrub status -d /share/bd8
scrub status for b39f475f-3ebf-40ea-b088-4ce7f4d4d8f4
scrub device /dev/sdf1 (id 1) status
scrub resumed at Sun Jun 2 20:29:06 2013, running for 10360 seconds
total bytes scrubbed: 845.53GB with 0 errors
scrub device /dev/sdb (id 2) status
scrub resumed at Sun Jun 2 20:29:06 2013, running for 10360 seconds
total bytes scrubbed: 869.38GB with 0 errors
scrub device /dev/sdc (id 3) status
scrub resumed at Sun Jun 2 20:29:06 2013, running for 10360 seconds
total bytes scrubbed: 706.04GB with 0 errors
scrub device /dev/sde (id 4) history
scrub started at Sun Jun 2 12:48:36 2013 and finished after 0 seconds
total bytes scrubbed: 0.00 with 0 errors
Mount options:
/dev/sdf1 on /share/bd8 type btrfs (rw,flushoncommit)
Kernel 3.9.4
John
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