Verify does not verify?

[Don Lee]

I ran an experiment (what and why is not important here) where I copied a backup set, and got an error.

 

 

+ Executing copy_set at 3/13/13 (Activity Thread 2)

To Backup Set atrash...

- 3/13/13 12:01:40 AM: Transferring from v9_daily_mercy_last

3/13/13 12:42:27 AM: Execution completed successfully

Completed: 503 files, 59.2 GB

Performance: 1,559.8 MB/minute

Duration: 00:40:46 (00:01:52 idle/loading/preparing)

 

- 3/13/13 12:42:27 AM: Verifying atrash

!Generated MD5 digest for file "/Volumes/backup/d.root.130212.gz" does not match stored MD5 digest.

3/13/13 12:58:45 AM: 1 execution errors

Remaining: 1 files, 0 B

Completed: 502 files, 59.2 GB

Performance: 3,887.5 MB/minute

Duration: 00:16:18 (00:00:42 idle/loading/preparing)

 

I then ran a verify on the source set, and the verify came through clean.

 

I then turned on "verify entire media set" on a verify script, and it came through clean.

 

I then ran the copy again, to see if the MD5 error was a transient of some kind. Nope.

 

What does "verify" do, if not check things like the MD5 digests?

 

What does "verify entire media set" do?

 

I'm not sure, but I think there is a bug in here somewhere.