Re: issues with ide-tape under 2.4.x and with 2.2.x+ide patches

[Mike Dresser <mdresser@windsormachine.com>]

(forgot to CC: this to the list when i replied to Jens, and decided to add
another paragraph)

I just tried my Seagate drive, and i can read my tapes in it.  If i swap
over to the HP, i can't read the tapes.  I'll look today, whether the
Seagate replies with a bunch of those I/O Errors.  It's not like i'm doing
anything but working on making this damn tape drive work =)

Considering the HP 7/14 gig format is already a proprietory format(<sarcasm>
THANKS HP! </sarcasm>), it wouldn't surprise me if something else is non
standard.  It's weird that i can read 7/14 gig tapes in the 10/20 Seagate
though.  Nice of Seagate to include support for someone else's mistake =)

Jens Axboe wrote:

> On Thu, Nov 02 2000, Mike Dresser wrote:
> > I'm currently running 2.4.0test10, running backups onto an IDE HP 7/14
> > gb drive.  Using  tar -cpvf /dev/ht0 myfiles backs up fine, no errors.
> >
> > But..
> >
> > promise:~# tar -tf /dev/ht0
> > tar: /dev/ht0: Cannot read: Input/output error
> > tar: At beginning of tape, quitting now
> > tar: Error is not recoverable: exiting now
> >
> > and from dmesg:
> > ide-tape: ht0: I/O error, pc = 1e, key =  5, asc = 20, ascq =  0
> > ide-tape: ht0: I/O error, pc =  8, key =  5, asc = 2c, ascq =  0
> > ide-tape: ht0: I/O error, pc = 1e, key =  5, asc = 20, ascq =  0
> >
> > (normal, i get those cause of the lock drive/unlock drive, which the
> > drive doesn't support)
>
> Interesting, and this is test10? I submitted a patch for test10 to
> not attempt prevent-removal commands in the ide-tape drives that
> do not support it. If this is indeed test10, that would mean that
> the HP drive misreports that capability. It'd be nice to know.
>
> --
> * Jens Axboe <axboe@suse.de>
> * SuSE Labs

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