QA output created by 325
Format filesystem
Create files
Check files
d5a0ed0305c8df4180cb2bf975ecffe8  SCRATCH_MNT/file1
d5a0ed0305c8df4180cb2bf975ecffe8  SCRATCH_MNT/file2
Inject error
CoW a few blocks
FS should be shut down, touch will fail
touch: cannot touch 'SCRATCH_MNT/badfs': Input/output error
Remount to replay log
FS should be online, touch should succeed
Check files again
7629bd70d19d7291b448221ac44b26d9  SCRATCH_MNT/file2
Done
