[sheepdog-users] sbd with erasure code doesn't play well

[Marcin Mirosław]

Hi!
It looks like some kind of data corruption:
# dog vdi list
  Name        Id    Size    Used  Shared    Creation time   VDI id
Copies  Tag
  test21       0  5.0 GB   44 MB  0.0 MB 2014-05-31 01:10   46652c    2:1
  test         0  300 GB  300 GB  0.0 MB 2014-05-31 00:28   7c2b25    2:1
  test2        0  5.0 GB   44 MB  0.0 MB 2014-05-31 01:10   fd3815      2
# cat /sys/bus/sbd/list
0 test
1 test2
2 test21

# mkfs.xfs -fq /dev/sbd1 && xfs_check /dev/sbd1
# mkfs.xfs -fq /dev/sbd2 && xfs_check /dev/sbd2
bad agf magic # 0 in ag 0
bad agf version # 0 in ag 0
block 0/0 expected type unknown got sb
bad magic # 0x58465342 in btbno block 0/0
bad magic # 0x58465342 in btcnt block 0/0
block 0/3 expected type unknown got missing
block 0/8 expected type unknown got missing
block 0/9 expected type unknown got missing
block 0/10 expected type unknown got missing
block 0/11 expected type unknown got missing
agf_btreeblks 0, counted 4294967294 in ag 0
bad agf magic # 0 in ag 1
bad agf version # 0 in ag 1
[and many more errors]

Marcin