On Fri, Sep 06, 2002 at 11:01:45AM +0200, Brian Jonnes wrote:
> Hi all,
> 
> I'm getting this in my kern.log's:
> 
> ---
> Sep  6 00:45:01 valhalla kernel: st: Version 20020205, bufsize 32768, wrt 
> 30720, max init. bufs 4, s/g segs 16
> Sep  6 00:45:01 valhalla kernel: Attached scsi tape st0 at scsi0, channel 0, 
> id 0, lun 0
> Sep  6 00:45:01 valhalla kernel: st0: Block limits 25976 - 6841632 bytes.
> Sep  6 01:18:39 valhalla kernel: st0: Error with sense data: Info 
> fld=0x10200, Deferred st09:00: sense key Medium Error
> Sep  6 01:18:39 valhalla kernel: Additional sense indicates Sequential 
> positioning error
> Sep  6 01:30:01 valhalla kernel: st: Unloaded.
> ---
> 
> This was from an amdump, which failed after 64kb written.
> 
> A little bit later, running an amcheck:
> ---
> Sep  6 09:54:45 valhalla kernel: st: Version 20020205, bufsize 32768, wrt 
> 30720, max init. bufs 4, s/g segs 16
> Sep  6 09:54:45 valhalla kernel: Attached scsi tape st0 at scsi0, channel 0, 
> id 0, lun 0
> Sep  6 09:54:45 valhalla kernel: st0: Block limits 11268 - 112641 bytes.
> Sep  6 10:09:45 valhalla kernel: scsi : aborting command due to timeout : pid 
> 72600, scsi0, channel 0, id 0, lun 0 Read (6) 01 00 00 40 00
> Sep  6 10:09:45 valhalla kernel: hdd: irq timeout: status=0xc0 { Busy }
> Sep  6 10:09:45 valhalla kernel: hdd: ATAPI reset complete
> Sep  6 10:09:45 valhalla kernel: hdd: irq timeout: status=0x80 { Busy }
> Sep  6 10:09:46 valhalla kernel: hdd: ATAPI reset complete
> Sep  6 10:09:46 valhalla kernel: hdd: irq timeout: status=0x80 { Busy }
> Sep  6 10:09:46 valhalla kernel: st0: Error 27070000 (sugg. bt 0x20, driver 
> bt 0x7, host bt 0x7).
> Sep  6 10:20:01 valhalla kernel: st: Unloaded.
> ---
> 
> Pulled the tape out, plugged it back in, and now its dumping fine. Can anyone 
> make sense of this?

I don't use your systems but ISTR people mentioning using mt to set the block 
size to 32K.

> BTW is there a way of getting amanda to put level 0's in "degraded mode"? I'd 
> still like full dumps when I have to manually run amdump.

level 0 and degraded mode?  Aren't these non-sequitors?  I thought degraded 
mode meant
falling back to incrementals because there was no place to put the level 0's.  
I.e.
the tape was not working and the holding disk did not have enough unreserved 
space
to hold the level 0's.  So where would you like amanda to put your huge level 
0's
if it can't put it to tape or to disk?

What's your holding disk space and reserve % situation?

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
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