DMESG чистый.
Ошибка при форматировании
mkfs.xfs /dev/rbd1
mkfs.xfs: Use the -f option to force overwrite.
mkfs.xfs /dev/rbd1 -f
meta-data=/dev/rbd1 isize=512 agcount=16, agsize=1638400 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=26214400, imaxpct=25
= sunit=1024 swidth=1024 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=12800, version=2
= sectsz=512 sunit=8 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
existing superblock read failed: Input/output error
mkfs.xfs: pwrite64 failed: Input/output error