Re: IDE Tape problem in 2.2.16 (bug?)

[Roger Gammans]

On Tue, Aug 08, 2000 at 02:58:56PM -0400, [e-mail] wrote:
> 
> I'm using a Seagate IDE tape drive (I understand it's basically a Travan
> tape drive) on kernel 2.2.16, and when I read from it, it doesn't read the
> last 18k from my backups; everything else seems to work.
> Here's the information the kernel prints for this:
> 
> Aug  8 10:06:52 www6 kernel: ide-tape: hdb <-> ht0: Seagate STT8000A rev 5.51 
> Aug  8 10:06:52 www6 kernel: ide-tape: hdb <-> ht0: 600KBps, 14*26kB buffer, 5850kB pipeline, 80ms tDSC, DMA 
> 
> During testing, I also get some other messages, too.  I understand
> they have to do with drive locking?
> 
> Aug  8 14:41:04 www6 kernel: ide-tape: ht0: I/O error, pc = 1e, key =  5, asc = 20, ascq =  0 
> Aug  8 14:41:36 www6 last message repeated 5 times
> Aug  8 14:41:49 www6 last message repeated 4 times

I've seen this sort of thing a lot.

I now use the ide-scsi layer for tape drives as the scsi tape driver
seems much more reliable.

I think my problem is to do with time out issues, in that the ide driver 
doesn't givev much pause for error code, key/asc/ascq= 2/4/1.

The drive is reporting unknown command (0x1e). This isn't
documented in my copy of qic157d.

Additionally that commend is list in the 2.2.17pre3 ide command 
#defines. Hmm.

Faulty memory? etc. . Check your ide-tape.c file for
a line which says '#define IDE_TAPE_*_CMD  0x1e'

Unless there's an ioctl which meant this has been issues from userspace.

In which case it a BRU issue.

-- 
Roger
     Think of the mess on the carpet. Sensible people do all their
     demon-summoning in the garage, which you can just hose down afterwards.
        --     [e-mail]