NFS Server cannot be mounted

[renderer]

Thanks very much for the suggestions about services and various options.

I tried following them, but hit a kernel "Oops". I'm running 7.0.4 on a Intel Core Duo with 7.0.4 DVD files stored on the HDD and "upgraded". I use this installation every day, and it has been very stable, so I don't think it's data corruption or flaky hardware.

I had already experienced a problem with NFS (as a client, this time), running directly from the DVD, which I reported here : http://knoppix.net/forum/threads/30193-NFSv4-client-crash-in-Knoppix-7.0.4-(and-work-araound)

I will download 7.0.5 and boot directly from DVD, and try again, when I have time.
I'll write back here with the results.

# /etc/init.d/nfs-kernel-server start
[ ok ] Exporting directories for NFS kernel daemon....
[....] Starting NFS kernel daemon: nfsd/etc/init.d/nfs-kernel-server: line 61:  3685 Killed                  start-stop-daemon --start --oknodo --quiet --nicelevel $RPCNFSDPRIORITY --exec $PREFIX/sbin/rpc.nfsd -- $RPCNFSDCOUNT

Message from syslogd@Microknoppix at Tue Feb  5 22:31:06 2013 ...
Microknoppix kernel: [  274.316665] Process rpc.nfsd (pid: 3685, ti=f148e000 task=f14da5e0 task.ti=f148e000)

Message from syslogd@Microknoppix at Tue Feb  5 22:31:06 2013 ...
Microknoppix kernel: [  274.316665] Stack:

Message from syslogd@Microknoppix at Tue Feb  5 22:31:06 2013 ...
Microknoppix kernel: [  274.316665] Call Trace:

Message from syslogd@Microknoppix at Tue Feb  5 22:31:06 2013 ...
Microknoppix kernel: [  274.316665] Code: 00 8b 75 e8 f3 a5 8b 45 f0 e8 d0 a1 00 00 eb 0a 8b 45 f0 e8 55 a1 00 00 31 c0 83 c4 18 5b 5e 5f 5d c3 55 89 e5 53 89 c3 83 ec 08 <8b> 40 0c 85 c0 74 14 48 85 c0 89 43 0c 74 1c 89 d8 e8 1e 1d 00 

Message from syslogd@Microknoppix at Tue Feb  5 22:31:06 2013 ...
Microknoppix kernel: [  274.316665] EIP: [<c15abc35>] svc_destroy+0x9/0xbf SS:ESP 0068:f148ff14
 failed!

# dmesg

[  274.312208] svc: failed to register nfsdv2 RPC service (errno 97).
[  274.312221] svc: failed to register nfsaclv2 RPC service (errno 97).
[  274.314684] nfsd: last server has exited, flushing export cache
[  274.314728] BUG: unable to handle kernel NULL pointer dereference at 0000000c
[  274.315018] IP: [<c15abc35>] svc_destroy+0x9/0xbf
[  274.315214] *pde = 00000000 
[  274.315330] Oops: 0000 [#1] PREEMPT SMP 
[  274.315509] Modules linked in: parport_pc ppdev lp parport nfs ipv6 dell_wmi sparse_keymap dell_laptop dcdbas coretemp 8250_pnp 8250 serial_core wmi battery ac snd_hda_codec_idt arc4 pcmcia iwl3945 iwlegacy mac80211 cfg80211 joydev yenta_socket snd_hda_intel i2c_i801 snd_hda_codec tg3 i915 drm_kms_helper
[  274.316665] 
[  274.316665] Pid: 3685, comm: rpc.nfsd Tainted: G        W    3.4.9 #34 Dell Inc. Latitude D830                   /0HN341
[  274.316665] EIP: 0060:[<c15abc35>] EFLAGS: 00210286 CPU: 0
[  274.316665] EIP is at svc_destroy+0x9/0xbf
[  274.316665] EAX: 00000000 EBX: 00000000 ECX: 00000100 EDX: c1959800
[  274.316665] ESI: f1518004 EDI: c11b2028 EBP: f148ff20 ESP: f148ff14
[  274.316665]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  274.316665] CR0: 8005003b CR2: 0000000c CR3: 3158a000 CR4: 000007d0
[  274.316665] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[  274.316665] DR6: ffff0ff0 DR7: 00000400
[  274.316665] Process rpc.nfsd (pid: 3685, ti=f148e000 task=f14da5e0 task.ti=f148e000)
[  274.316665] Stack:
[  274.316665]  c15abd06 ffffff9f ffffff9f f148ff5c c11b20e1 00000ffc c12b14b2 f1518004
[  274.316665]  00000002 f1518005 00000004 c10e5394 f148ff5c c10e5b97 0804c8a0 f34d8b00
[  274.316665]  00000002 c11b2028 f148ff70 c11b1dda f34d8b00 0804c8a0 c11b1da0 f148ff8c
[  274.316665] Call Trace:
[  274.316665]  [<c15abd06>] ? svc_shutdown_net+0x1b/0x1f
[  274.316665]  [<c11b20e1>] write_ports+0xb9/0x2c3
[  274.316665]  [<c12b14b2>] ? _copy_from_user+0x2b/0x3e
[  274.316665]  [<c10e5394>] ? copy_from_user+0x8/0xa
[  274.316665]  [<c10e5b97>] ? simple_transaction_get+0x71/0x8b
[  274.316665]  [<c11b2028>] ? write_maxblksize+0xa3/0xa3
[  274.316665]  [<c11b1dda>] nfsctl_transaction_write+0x3a/0x55
[  274.316665]  [<c11b1da0>] ? write_filehandle+0x146/0x146
[  274.316665]  [<c10ce131>] vfs_write+0x7c/0xe8
[  274.316665]  [<c10cf301>] ? fget_light+0x2b/0x7d
[  274.316665]  [<c10ce31a>] sys_write+0x38/0x60
[  274.316665]  [<c15ebf65>] syscall_call+0x7/0xb
[  274.316665] Code: 00 8b 75 e8 f3 a5 8b 45 f0 e8 d0 a1 00 00 eb 0a 8b 45 f0 e8 55 a1 00 00 31 c0 83 c4 18 5b 5e 5f 5d c3 55 89 e5 53 89 c3 83 ec 08 <8b> 40 0c 85 c0 74 14 48 85 c0 89 43 0c 74 1c 89 d8 e8 1e 1d 00 
[  274.316665] EIP: [<c15abc35>] svc_destroy+0x9/0xbf SS:ESP 0068:f148ff14
[  274.316665] CR2: 000000000000000c
[  274.439286] ---[ end trace c6d2c5f77bcaf00f ]---

[renderer]

I downloaded the 7.0.5 DVD to use instead of the 7.0.4 DVD

Everything works as expected now. Thanks for confirming which services and options are needed to get NFS server working.

I don't know why my 7.0.4 DVD download had problems with NFS. I have verified the integrity of the files involved, so it's not a simple data error.

I will stop using the 7.0.4 now. Hopefully things will run smoothly now!

Thanks again for your help.