Anil,
Some kernel messages about I/O errors are ok and expected, as error
recovery is being performed by the driver and not by the firmware.
The critical point to look for is whether tar or other user space
backup programs return compare errors; that would mean that the driver
error recovery failed, and is something that should be fixed.
Cheers,
Gadi
On 23 May 2000, Anil B. Somayaji wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> The patch seems to have helped things - thanks! Now I can actually
> successfully compare a tape I made before. However, I do still see
> some errors - first, I got I/O error message at the beginning of the
> compare. Then, a "mt -f /dev/nht0 status" call took a very long time
> to complete, and when it returned it didn't know what block it was on.
> No new messages appeared on the console, but I think the mt is
> responsible for the later error messages - I'm not sure which ones
> exactly, though. Anyway, I've included the log entries at the end of
> this message.
>
> I'll try to play with the drive some more today - anything I should be
> looking for?
>
> --Anil
>
>
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: I/O error, pc = 8, key = 3, asc = 11,
>ascq = 0
> May 23 15:49:22 lydia kernel: ide-tape: ht0: enabling read error recovery
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, read error
> May 23 15:49:22 lydia kernel: ide-tape: ht0: skipping frame, frame type 8
> May 23 15:49:22 lydia last message repeated 9 times
> May 23 15:49:46 lydia kernel: ide-tape: ht0: skipping frame, eod
> May 23 15:49:47 lydia last message repeated 637 times
> May 23 15:49:47 lydia kernel: ide-tape: ht0: blank block detected, positioning tape
>to block 3000
> May 23 16:11:55 lydia kernel: ide-tape: ht0: skipping frame, incorrect application
>signature
> May 23 16:12:27 lydia last message repeated 484 times
> May 23 16:13:01 lydia last message repeated 1139 times
> May 23 16:13:18 lydia kernel: ide-tape: ht0: skipping frame, eod
> May 23 16:13:18 lydia last message repeated 19 times
> May 23 16:13:18 lydia kernel: ide-tape: ht0: blank block detected, positioning tape
>to block 40560
> May 23 16:13:36 lydia kernel: ide-tape: ht0: skipping frame, eod
> May 23 16:13:36 lydia last message repeated 19 times
> May 23 16:13:36 lydia kernel: ide-tape: ht0: blank block detected, positioning tape
>to block 40620
> May 23 16:13:55 lydia kernel: ide-tape: ht0: skipping frame, eod
> May 23 16:13:55 lydia last message repeated 19 times
> May 23 16:13:55 lydia kernel: ide-tape: ht0: blank block detected, positioning tape
>to block 40680
> May 23 16:14:14 lydia kernel: ide-tape: ht0: skipping frame, eod
> May 23 16:14:14 lydia last message repeated 19 times
> May 23 16:14:14 lydia kernel: ide-tape: ht0: blank block detected, positioning tape
>to block 40740
> May 23 16:14:32 lydia kernel: ide-tape: ht0: skipping frame, eod
> May 23 16:14:32 lydia last message repeated 19 times
> May 23 16:14:32 lydia kernel: ide-tape: ht0: blank block detected, positioning tape
>to block 40800
> May 23 16:14:32 lydia kernel: ide-tape: ht0: couldn't find logical block -1, aborting
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