Process in D state with st driver

[Hans-Joachim Baader <hjb@pro-linux.de>]

Hi,

I do nightly backups on tape. Every 3 to 4 weeks a process is stuck in
D state while accessing the drive:

12398 ?        D      0:00 /usr/sbin/amcheck -ms daily

There are no messages in the log. Only a reboot can remove this process.

lsscsi --long
[0:0:0:0]    tape    TANDBERG  TDC 4222        =07:  /dev/st0
  state=running queue_depth=1 scsi_level=3 type=1 device_blocked=0 timeout=300

lsscsi --hosts --long
[0]    tmscsim
  cmd_per_lun=1    host_busy=0    sg_tablesize=255  unchecked_isa_dma=0

Kernel: 2.6.12.2 SMP

lspci
0000:00:00.0 Host bridge: Intel Corp. 430HX - 82439HX TXC [Triton II] (rev 03)
0000:00:07.0 ISA bridge: Intel Corp. 82371SB PIIX3 ISA [Natoma/Triton II] (rev 01)
0000:00:07.1 IDE interface: Intel Corp. 82371SB PIIX3 IDE [Natoma/Triton II]
0000:00:11.0 SCSI storage controller: Advanced Micro Devices [AMD] 53c974 [PCscsi] (rev 10)
0000:00:12.0 Ethernet controller: VIA Technologies, Inc. VT86C100A [Rhine] (rev 06)

cat /proc/interrupts
           CPU0       CPU1
  0: 1753859899  436965002    IO-APIC-edge  timer
  2:          0          0          XT-PIC  cascade
  3:          3          0    IO-APIC-edge  serial
  8:        106          0    IO-APIC-edge  rtc
 14:   18946860          6    IO-APIC-edge  ide0
 18:   88008860   86047094   IO-APIC-level  eth0
 19:   61084709          1   IO-APIC-level  tmscsim
NMI:          0          0
LOC: 2190883256 2191052965
ERR:          0
MIS:          0

Regards,
hjb
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