[OpenAFS-devel] Misbehaviour of afs client on 4-processor server, Kernel 2.4.0

[Karl Lehnberger]

Hello everyone,

I'm not able to get the afs client working proberly on a 4-processor
server with 16GB memory, kernel 2.4.0 (RedHat), openafs-1.0.3. 
Loading the module, starting the afsd's and mounting /afs seem to be
o.k. Also roaming through afs directories (cd, ls) is possible.
But trying to access files from /afs fails:
12:54> /afs/ipp/@sys/bin/tokens 
/afs/ipp/@sys/bin/tokens: Bad address

fstrace shows the following:

AFS Trace Dump -
...

time 818.372711, pid 1718: Access vp 0xf8922000 mode 0x40 len 0x2800
time 818.372711, pid 1718: Access vp 0xf8922000 mode 0x40 len 0x2800
time 818.372711, pid 1718: Lookup adp 0xf8922000 name ipp-garching.mpg.de fid (1:536870913.2.202), code=0
time 818.372711, pid 1718: Mount point is to vp 0xf89223b8 fid (1:536870913.2.202)
time 818.372711, pid 1718: Access vp 0xf8922594 mode 0x40 len 0x1800
time 818.372711, pid 1718: Lookup adp 0xf8922594 name i386_linux24 fid (1:536870916.274.83895), code=0
time 818.372711, pid 1718: Mount point is to vp 0xf8922770 fid (1:536870916.274.83895)
time 818.372711, pid 1718: Access vp 0xf892294c mode 0x40 len 0x800
time 818.372711, pid 1718: Access vp 0xf892294c mode 0x40 len 0x800
time 818.372711, pid 1718: Access vp 0xf8922594 mode 0x40 len 0x1800
time 818.372711, pid 1718: Lookup adp 0xf8922594 name i386_linux22 fid (1:536870916.182.77612), code=0
time 818.372711, pid 1718: Mount point is to vp 0xf8922d04 fid (1:536870916.182.77612)
time 818.372711, pid 1718: Access vp 0xf8922ee0 mode 0x40 len 0x800
time 818.372711, pid 1718: Access vp 0xf8925d5c mode 0x40 len 0x6000
time 818.372711, pid 1718: Lookup adp 0xf8925d5c name tokens fid (1:536923523.1482.1352), code=0
time 818.372711, pid 1718: Access vp 0xf8925d5c mode 0x40 len 0x6000
time 818.372711, pid 1718: Lookup adp 0xf8925d5c name AFSWS fid (1:536923523.50.278), code=0
time 818.372711, pid 1718: Access vp 0xf8925d5c mode 0x40 len 0x6000
time 818.372711, pid 1718: Access vp 0xf8925d5c mode 0x40 len 0x6000
time 818.372711, pid 1718: Access vp 0xf8922ee0 mode 0x40 len 0x800
time 818.372711, pid 1718: Access vp 0xf8928db4 mode 0x40 len 0x800
time 818.372711, pid 1718: Lookup adp 0xf8928db4 name afsws fid (1:536923523.10.9694), code=0
time 818.372711, pid 1718: Access vp 0xf8928db4 mode 0x40 len 0x800
time 818.372711, pid 1718: Lookup adp 0xf8928db4 name afsws.open fid (1:536923523.4092.9692), code=0
time 818.372711, pid 1718: Mount point is to vp 0xf892916c fid (1:536923523.4092.9692)
time 818.372711, pid 1718: Access vp 0xf8929348 mode 0x40 len 0x800
time 818.372711, pid 1718: Lookup adp 0xf8929348 name bin fid (1:536951524.3.4), code=0
time 818.372711, pid 1718: Access vp 0xf8929524 mode 0x40 len 0x800
time 818.372711, pid 1718: Lookup adp 0xf8929524 name tokens fid (1:536951524.798.5422), code=0
time 818.372711, pid 1718: Access vp 0xf8929700 mode 0x40 len 0x165b0
time 818.372711, pid 1718: Open 0xf8929700 flags 0x0
time 818.372711, pid 1718: Open 0xf8929700 flags 0xf423f
time 818.372711, pid 1718: Iread ip 0xf8929700 pos 0x0 count 0x80 code 1869f
time 818.372711, pid 1718: Ireadpage ip 0xf8929700 pp 0xd1e7c750 count 0x5 code 1869f
time 818.372711, pid 1718: Read vp 0xf8929700 off 0x0 resid 0x1000 file length 0x165b0
time 818.372711, pid 1718: Returning code 14 from 13
time 818.372711, pid 1718: Ireadpage ip 0xf8929700 pp 0xd1e7c750 count 0x5 code e
time 818.372711, pid 1718: Iread ip 0xf8929700 pos 0x0 count 0x80 code fffffff2
time 818.372711, pid 1718: Close 0xf8929700 flags 0x0
time 834.602711, pid 1721: Access vp 0xf8922000 mode 0x40 len 0x2800
time 834.602711, pid 1721: Access vp 0xf8922000 mode 0x40 len 0x2800
time 834.602711, pid 1721: Lookup adp 0xf8922000 name ipp-garching.mpg.de fid (1:536870913.2.202), code=0
...

The same kernel, same afs client version on a single cpu machine doesn't
cause this behaviour.
Perhaps somebody was faced with a similar problem and know a solution. 

---
Thank you in advance,
Karl

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Karl Lehnberger                      e-mail lehnberger@rzg.mpg.de
                                           phone +49-89-3299-2556
RZG (Rechenzentrum Garching)               fax   +49-89-3299-1301
Computing Center of the Max-Planck-Gesellschaft (MPG) and the
Institut fuer Plasmaphysik (IPP)
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