Messages in this thread | | | Subject | ATAPI tape problem | Date | Tue, 18 Jan 2000 15:55:45 CST | From | "Joshua R. Bertram" <> |
| |
Hi,
I'm trying to diagnose and fix a tape backup/restore problem with a Connor CTT8000-A tape drive. I've tried to get it working using both kernel versions 2.2.12-20 (not sure where the -20 came from.. should be the default installed with RH6.1) and 2.2.14, with the same results.
I started the backup with the following command: tar cvf /dev/tape /home
/dev/tape is a symbolic link to /dev/ht0
I watched the archival go for maybe 10 mins before I went to class. After some amount of time ( < 2 hrs ), I get the following errors:
ide-tape: ht0: I/O error, pc = a, key = 6, asc = 28, ascq = 0 ide-tape: ht0: DSC timeout hdd: ATAPI reset complete ide-tape: ht0: I/O error, pc = a, key = 0, asc = 0, ascq = 0 ide-tape: ht0: DSC timeout hdd: ATAPI reset complete (times at least 6 more a,0,0,0 errors until the next a,6,28,0 error)
I looked up the sense key codes and found that the 6,28,0 error translates to "UNIT ATTENTION: NOT READY TO READY TRANSITION ( MEDIUM MAY HAVE CHANGED )". That particular error doesn't meant a lot to me, so maybe I'm overlooking something very obvious. The tape didn't "change", as far as I can tell--it's the same physical tape as I put in earlier and I didn't remove the tape to inspect it until after I got the errors in the first place. At this point, I have killed the tar process, but I'm still getting the error messages on my console.
Now, one thing that I've noticed is that the home directory that I'm backing up is ~4GB and my tape is a 4GB/8GB Travan tape. If I'm writing more than 4GB to the tape (because tar doesn't actually compress, does it?), would that cause this error? If so, why don't I get a nice, friendly error message? I haven't had a chance to test it w/ a smaller directory because the tape drive is essentially dead and I can't reset this server until tonight.
I haven't found anything yet on the web or in this archive that matches my problem, exactly, so I'm emailing this list in the event that it is a kernel issue. If I can do anymore on this end to debug the problem, please let me know.
Also, I'm not on this email list, so please CC me (jbertram@iastate.edu) on any responses.
Thanks, J.
------------------------------------------------------------------- Joshua R Bertram ----$$$$$$$$$$------ jbertram@iastate.edu Homepage: http://www.public.iastate.edu/~jbertram Resume: http://www.public.iastate.edu/~jbertram/resume.html -------------------------------------------------------------------
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |