linux-2.2.2 kernel hangs

linux-2.2.2 kernel hangs

[Alois Fertl]

On Saturday I managed to update my kernel sources to 2.2.2 from
vger/linux
at cvs.samba.org. There was some restructuring on samba and I had to
find
out how to update my Repository and Root CVS files.

This 2.2.2 version has severe problems on a Motorola RiscPC. Actually
the
kernel hangs within a short time if cpio'ing files from a NFS tree to
the
local scsi drive. It starts with a message about the nfs server not
responding and than endlessly repeats scsi timeouts. Due to my problems
with CVS I do not have any of the versions between 2.1.130 and 2.2.2.
The
2.1.130 version did not show the problem.

Is this a known problem.
Did anybody else experiance the same problem. 


Here is a sample output:

nfs: server dino not responding, still trying
scsi : aborting command due to timeout : pid 3940, scsi0, channel 0, id
0, lun 0 0x0a 02 ff c0 80 00
ncr53c8xx_abort: pid=3940 serial_number=3947
serial_number_at_timeout=3947
scsi : aborting command due to timeout : pid 3941, scsi0, channel 0, id
0, lun 0 0x0a 03 00 5a 02 00
ncr53c8xx_abort: pid=3941 serial_number=3948
serial_number_at_timeout=3948
ncr53c810-0: abort ccb=c0195020 (cancel)
SCSI host 0 abort (pid 3941) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
ncr53c8xx_reset: pid=3941 reset_flags=2 serial_number=3948
serial_number_at_timeout=3948
SCSI host 0 abort (pid 3941) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
ncr53c8xx_reset: pid=3941 reset_flags=2 serial_number=3949
serial_number_at_timeout=3949
SCSI host 0 abort (pid 3941) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
ncr53c8xx_reset: pid=3941 reset_flags=2 serial_number=3951
serial_number_at_timeout=3951
SCSI host 0 abort (pid 3941) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
ncr53c8xx_reset: pid=3941 reset_flags=2 serial_number=3953
serial_number_at_timeout=3953


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Re: linux-2.2.2 kernel hangs

[VALETTE Eric]

>>>>> "Alois" == Alois Fertl <alois_fertl@TalkNet.de> writes:

Alois> This 2.2.2 version has severe problems on a Motorola RiscPC. Actually
Alois> the
Alois> kernel hangs within a short time if cpio'ing files from a NFS tree to
Alois> the
Alois> local scsi drive. It starts with a message about the nfs server not
Alois> responding and than endlessly repeats scsi timeouts. Due to my problems
Alois> with CVS I do not have any of the versions between 2.1.130 and 2.2.2.
Alois> The
Alois> 2.1.130 version did not show the problem.

Alois> Is this a known problem.

Yes. But it is not related specifically to PPC. I had the same problem
with adaptec 2940 on Intel (and was not alone). The problem is that
apparently, the scsi driver tries to transfer byte at a rate that
cannot be handled as UW2 chips are now working... (20 Mb/s instead of 
10Mb...). 

To fix it on PC, I had to upgrade the adaptec BIOS and use the
new per-device speed setup feature... I do not know how
you will handled this is a ppc... May be there is a compilation
option to set the default speed but I haven't checked...

BTW : I said that your patch for IDE will not work on MCP750.
      This was wrong. It works and otherwyse you cannot boot using
      pload. Sorry for the mistake. The bad news, is that
      you must reformat your disk if you were using IDE before using the 
      patch...


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E-mail: valette@crf.canon.fr

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