[RndTbl] NFS again, please HELP!
Trevor Cordes
trevor at tecnopolis.ca
Sun Nov 18 18:53:39 CST 2007
There must be some NFS wizards in the group...
I still can't get NFS locking to work between my 2 linux boxen.
I took the drastic steps of completely disabling my iptables firewalls on
both boxes and setting the policies to ACCEPT. Didn't help.
I also set my NFS server config back to 100% stock (mv /etc/sysconfig/nfs
/tmp/; service nfs restart; service nfslock restart; service rpcidmapd
restart; service portmap restart), remount. Doesn't help.
The test code at the bottom never gets past the flock call. oocalc also
will never get past the splash screen.
I tried exporting and mounting from machine A to machine A (I guess a
loopback-ish mount). For both machine A and B, this works fine. The perl
code runs and oocalc loads up a NFS'd file instantly.
If I mount with nolock in client's fstab, then oocalc starts fine
(probably just ignoring the locks).
I recently upgrade the client box to Fedora 8 (2.6.23). The server is not
easily upgradable and is running 2.6.17. I did a lot of net research and
it seems like NFS flock should work on all kernels after 2.6.12.
I'm stumped! Please help!
Here's my server /etc/sysconfig/nfs (to work with my firewalls)
STATD_PORT=32765
STATD_OUTGOING_PORT=32766
MOUNTD_PORT=32767
RQUOTAD_PORT=32764
LOCKD_TCPPORT=32763
LOCKD_UDPPORT=32763
SECURE_NFS=no
exports:
/data 192.168.100.1(rw,insecure,insecure_locks,async,no_subtree_check,no_root_squash)
client:
192.168.100.2:/data /data nfs rw,hard,intr,timeo=10,nosuid,bg,udp,rsize=8192,wsize=8192 0 0
server processes:
root 15986 1 0 18:50 ? 00:00:00 rpc.rquotad -p 32764
root 15989 7 0 18:50 ? 00:00:00 [nfsd4]
root 15990 1 0 18:50 ? 00:00:00 [nfsd]
root 15991 1 0 18:50 ? 00:00:00 [nfsd]
root 15992 1 0 18:50 ? 00:00:00 [nfsd]
root 15993 1 0 18:50 ? 00:00:00 [lockd]
root 15994 7 0 18:50 ? 00:00:00 [rpciod/0]
root 15995 1 0 18:50 ? 00:00:00 [nfsd]
root 15996 1 0 18:50 ? 00:00:00 [nfsd]
root 15997 1 0 18:50 ? 00:00:00 [nfsd]
root 15998 1 0 18:50 ? 00:00:00 [nfsd]
root 15999 1 0 18:50 ? 00:00:00 [nfsd]
root 16002 1 0 18:50 ? 00:00:00 rpc.mountd -p 32767
rpcuser 16039 1 0 18:50 ? 00:00:00 rpc.statd -p 32765 -o 32766
root 16069 1 0 18:50 ? 00:00:00 rpc.idmapd
rpc 16087 1 0 18:50 ? 00:00:00 portmap
test script:
#!/usr/bin/perl
use Fcntl ':flock'; # import LOCK_* constants
print("Just before opening file.\n");
open(LOCKFILE,">testlockfile") or
die "Error: Could not write to lock file: testlockfile: $!\n";
print("Just before locking file.\n");
flock(LOCKFILE,LOCK_EX);
print("Just before unlocking file.\n");
flock(LOCKFILE,LOCK_UN);
print("All done. File locked and unlocked.\n");
unlink("testlockfile");
exit(0);
More information about the Roundtable
mailing list