Re: Slow tape read-write after upgrade
On Thu, 31 May 2012 15:39:04 +0000, Camaleón wrote:
> "st" kernel module seems to be segfaulting. I would try to reproduce the
> error from a clean Squeeze installation to discard a problem coming from
> the upgrade and if it's still present, I'd report it in BTS.
But not the module "st" segfaulting, and process "scsi_id", that applies
to the package "udev". May be problem is in it? The module "st" runs
after loading, but with reduced speed. Now I compile module "st" with
debug option, here the debug log:
Jun 1 09:39:51 s1 kernel: [2048057.202152] st: Version 20081215, fixed
bufsize 32768, s/g segs 256
Jun 1 09:39:51 s1 kernel: [2048057.204377] st 2:1:4:0: Attached scsi
tape st0
Jun 1 09:39:51 s1 kernel: [2048057.204400] st 2:1:4:0: st0: try direct
i/o: yes (alignment 4 B)
Jun 1 09:39:52 s1 kernel: [2048057.912574] scsi_id[23200]: segfault at
0 ip (null) sp 00000000ff8260e0 error 14
Jun 1 09:39:53 s1 kernel: [2048059.259879] scsi_id[23197]: segfault at
0 ip (null) sp 00000000ffb33250 error 14
Jun 1 09:40:00 s1 kernel: [2048065.675895] st0: Block limits 1 -
16777215 bytes.
Jun 1 09:40:00 s1 kernel: [2048065.678045] st0: Mode sense. Length 11,
medium 0, WBS 10, BLL 8
Jun 1 09:40:00 s1 kernel: [2048065.678068] st0: Density 44, tape
length: 0, drv buffer: 1
Jun 1 09:40:00 s1 kernel: [2048065.678088] st0: Block size: 0, buffer
size: 4096 (1 blocks).
Jun 1 09:40:00 s1 kernel: [2048065.707199] st0: Error: 8000002, cmd: 8
0 0 80 0 0
Jun 1 09:40:00 s1 kernel: [2048065.707219] st0: Sense Key : No Sense
[current]
Jun 1 09:40:00 s1 kernel: [2048065.707245] Info fld=0x5800, ILI
Jun 1 09:40:00 s1 kernel: [2048065.707261] st0: Add. Sense: No
additional sense information
Jun 1 09:40:00 s1 kernel: [2048065.707285] st0: Sense: f0 0 20 0 0
58 0 10
Jun 1 09:40:00 s1 kernel: [2048065.722112] st0: Error: 8000002, cmd: 8
0 0 80 0 0
Jun 1 09:40:00 s1 kernel: [2048065.722133] st0: Sense Key : No Sense
[current]
Jun 1 09:40:00 s1 kernel: [2048065.722157] Info fld=0x5800, ILI
Jun 1 09:40:00 s1 kernel: [2048065.722171] st0: Add. Sense: No
additional sense information
Jun 1 09:40:00 s1 kernel: [2048065.722196] st0: Sense: f0 0 20 0 0
58 0 10
Jun 1 09:40:00 s1 kernel: [2048065.728468] st0: Error: 8000002, cmd: 8
0 0 80 0 0
Jun 1 09:40:00 s1 kernel: [2048065.728487] st0: Sense Key : No Sense
[current]
Jun 1 09:40:00 s1 kernel: [2048065.728511] Info fld=0x5800, ILI
Jun 1 09:40:00 s1 kernel: [2048065.728526] st0: Add. Sense: No
additional sense information
Jun 1 09:40:00 s1 kernel: [2048065.728550] st0: Sense: f0 0 20 0 0
58 0 10
Jun 1 09:40:00 s1 kernel: [2048065.734823] st0: Error: 8000002, cmd: 8
0 0 80 0 0
.....
.....
Jun 1 09:40:00 s1 kernel: [2048066.027863] st0: Sense: f0 0 20 0 0
58 0 10
Jun 1 09:40:00 s1 kernel: [2048066.034136] st0: Error: 8000002, cmd: 8
0 0 80 0 0
Jun 1 09:40:00 s1 kernel: [2048066.034156] st0: Sense Key : No Sense
[current]
Jun 1 09:40:00 s1 kernel: [2048066.034180] Info fld=0x5800, ILI
Jun 1 09:40:00 s1 kernel: [2048066.034196] st0: Add. Sense: No
additional sense information
Jun 1 09:40:00 s1 kernel: [2048066.034219] st0: Sense: f0 0 20 0 0
58 0 10
Jun 1 09:40:00 s1 kernel: [2048066.034336] st0: Number of r/w requests
50, dio used in 50, pages 400.
WBR, Iurii O Tabolin.
Reply to: