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RE: Problem with SCSI on HP 712/60


	Sorry, I have no advice, but I want to add that if for some reason I have
an abnormal shutdown on my A180 and there is a forced disk check I also get
the "tag starvation" message.

	I did find this message chain:

On Thu, Jan 24, 2002 at 11:55:01PM -0700, Grant Grundler wrote:
> Follow up to parisc-linux@lists.parisc-linux.org only please.
> (ie this isn't a debian linux issue)
> Vlad Markov wrote:
> > I get the following message when I boot up on a 735/99:
> > Jan 22 19:12:41 grumpy kernel: scsi0 (1:0) Target is suffering from tag
> >	starvation.
> Seems only 53c700.c prints this msg. Is this the right driver?

Should be; 735 has unsupported 53c720 FWD, and 53c700 or 710 driven by
53c700.c.  I assume Vlad has external narrow SE disks attached.

> Normally you shouldn't see this *if* the device supports tagged commands.

I used to get this a lot, until James changed the driver to only report
the first occurance of it.  Don't remember the exact details, but iirc
it is for info only, and non-fatal.  From the code it looks like it
means some cmnd has been sitting in the drive unprocessed for too long,
and the code rejects new cmds until those older ones have been processed
or timed out.

> I can never remember the SCSI driver options (the parisc-linux FAQ has
> the URL to them) but one of them will either disable or limit
> "queue depth" for Queue Tags and that should take care of it.

Hmm, I thought that would be a feature of a specific driver, not the
upper layers.  53c700.c doesn't (yet) have any boot options to disable

Richard <rhirst@linuxcare.com>

	If anyone has more information on what tage starvation is and the
consequences of this message, I would appreciate it too.


Harry Cochran

-----Original Message-----
From: W. Borgert [mailto:debacle@debian.org]
Sent: Thursday, September 16, 2004 6:32 AM
To: debian-hppa@lists.debian.org; debian-boot@lists.debian.org
Subject: Problem with SCSI on HP 712/60


a colleague tried to install Debian on his HP712/60 with standard SCSI
adaptor (whatever that is).  He used the d-i testing image of 2004-08-20.

The d-i went smoothly until the creation of file systems.  The kernel
output on the fourth console said:

SCSI device sda: 8467200 512-bytes hdwr sectorrs (4335 MB)
 p6 >
adding swap: 191044k swap-space (priority -1)
scsi0 (3:0) target is suffering from tag starvation.
scsi0 (3:0) broken device is looping in contingent allegiance: ignoring

After that, the system is stone dead.  As he tried also with two more
712/60s and also tried other d-i versions, I believe, there must be a
fundamental problem.  Any ideas?

Many thanks in advance!

Cheers, WB

Note: I can do further tests, but probably not before mid-October.

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