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machine hangs after high disk IO load


I have a testmachine which hangs when there is much IO load. This is the

COMPstation U2 UPA/SBus (2 X UltraSPARC 200MHz), No KBD
OpenBoot 3.11, 256 MB memory installed, Serial #16008960.
Ethernet address 0:80:3f:f4:47:0, Host ID: 80f44700.

I installed woody without problems more than once but when I stress the
SCSI system the machine hangs and only a hard reboot helps.
I switched to sarge and used Bens 2.4.24 kernel but there I have the
same problem.

SCSI subsystem driver Revision: 1.00
qlogicfc : PCI not present
esp0: IRQ 4,7e0 SCSI ID 7 Clk 40MHz CCYC=25000 CCF=8 TOut 167
ESP: Total of 1 ESP hosts found, 1 actually in use.
scsi0 : Sparc ESP366-HME
  Vendor: SEAGATE   Model: ST32550W          Rev: 0021
  Type:   Direct-Access                      ANSI SCSI revision: 02
  Vendor: TEAC      Model: CD-R55S           Rev: 1.0R
  Type:   CD-ROM                             ANSI SCSI revision: 02
Attached scsi disk sda at scsi0, channel 0, id 3, lun 0
esp0: target 3 [period 100ns offset 15 20.00MHz FAST-WIDE SCSI-II]
SCSI device sda: 4194058 512-byte hdwr sectors (2147 MB)
Partition check:
 /dev/scsi/host0/bus0/target3/lun0: p1 p2

I changed the harddisk already to be sure its not a harddisk problem but
with an other harddisk I have the same problem:

scsi : aborting command due to timeout : pid 6490, scsi0, channel 0, id
3, lun 0 Write (10) 0
esp0: Aborting command
esp0: dumping state
esp0: dma -- cond_reg<b2bf8810> addr<00000000>
esp0: SW [sreg<10> sstep<04> ireg<20>]
esp0: HW reread [sreg<10> sstep<cc> ireg<00>]

esp0: disconnected [tgt<03> lun<00> pphase<FREEING> cphase<FREEING>]
SCSI host 0 abort (pid 6490) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
esp0: Resetting scsi bus
esp0: SCSI bus reset interrupt
esp0: SCSI bus reset interrupt
esp0: DMA error b2bf8a03
esp0: Resetting scsi bus
esp0: SCSI bus reset interrupt
esp0: Warning, live target 3 not responding to selection.

Is there anybody who could tell me if this problem is solveable or is
the a bigger hardware problem?

Thank you!

Noèl Köthe <noel debian.org>
Debian GNU/Linux, www.debian.org

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