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SubjectBug in nfs in kernel 2.2.10 ?
Hi,

i was happy running Linux on two machines ( one exports home
directories to the other through nfs ) until today....
Today i installed kernel 2.2.10 on my client and troubles started.

Here's the configuration :

both client & server are AMD 400Mhz with 128MB RAM.


My home directory is nfs mounted from the server.

Each time i'm trying to use netscape to send and email , the netscape
process goes into uninterruptible sleep, wating for disk io to complete
... and never wakes up. This is 100% reproducible ( even after client
reboot and nfs server restart ).
It happens ( up to now ) only with netscape when opening a mail composer,
not when reading or deleting messages ...

Here are some evidences i found :

uname -a
Linux charles.eporter.com 2.2.10 #4 Mon Jun 21 15:11:34 PDT 1999 i586
unknown

ps aux | grep netscape
charlus 565 16.1 9.0 19556 11596 ? D 18:14 0:06
/apps/netscape/netsca
[charlus@charles charlus]$ cat /proc/565/status
Name: netscape
State: D (disk sleep)
Pid: 565
PPid: 1
Uid: 501 501 501 501
Gid: 100 100 100 100
Groups: 100 500 506
VmSize: 19580 kB
VmLck: 0 kB
VmRSS: 11664 kB
VmData: 5208 kB
VmStk: 24 kB
VmExe: 10664 kB
VmLib: 2056 kB
SigPnd: 0000000000002000
SigBlk: fffffffffffffefb
SigIgn: 0000000000001080
SigCgt: 0000000000016403
CapInh: 00000000fffffeff
CapPrm: 0000000000000000
CapEff: 0000000000000000

--- Now let's go to the nfs server ----

rlogin server
[charlus@server charlus]$ uname -a
Linux server.eporter.com 2.2.10 #12 Mon Jun 14 09:32:40 PDT 1999 i586
unknown
/usr/sbin/rpc.nfsd -v
Universal NFS Server 2.2beta37

nothing special in /var/log/messages

--------back to the client----------------

On the client, i found this on /var/log/messages

Jun 21 18:59:19 charles kernel: RPC: doubly enqueued task!
Jun 21 18:59:19 charles kernel: RPC: failed to add task to queue: error: -11!
Jun 21 18:59:19 charles kernel: lockd: couldn't bind to server 192.168.0.2 - giving up.
Jun 21 18:59:19 charles kernel: RPC: task of released request still queued!
Jun 21 18:59:19 charles kernel: RPC: (task is on xprt_pending)


any idea ?

thanks a lot.

Charles-Edouard Ruault



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