create fs without csum_seed
Filesystem UUID:          6b33f586-a183-4383-921d-30da3fef2e5c
turn on csum_seed
Filesystem UUID:          6b33f586-a183-4383-921d-30da3fef2e5c
Checksum seed:            0x3ba62721
change uuid
Filesystem UUID:          1dd136c6-e47a-4833-9bf5-519f8aacabe4
Checksum seed:            0x3ba62721
check filesystem
fsck returns 0
Filesystem UUID:          1dd136c6-e47a-4833-9bf5-519f8aacabe4
Checksum seed:            0x3ba62721
