* nfsd restart attempt ended in nfsd hang
@ 2010-04-22 9:06 Jan Engelhardt
[not found] ` <alpine.LSU.2.01.1004221105060.18536-SHaQjdQMGhDmsUXKMKRlFA@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Jan Engelhardt @ 2010-04-22 9:06 UTC (permalink / raw)
To: linux-nfs
Hi,
I am observing this hanging nfsd kernel thread:
Linux 2.6.33.2
0404] nfsd D ffff88033b29d100 0 26090 2 0x00000000
0410] ffff880191b45c60 0000000000000046 0000000000000010 ffff880191b45fd8
0415] ffff880101e943c0 ffff880191b45fd8 0000000000012300 0000000000012300
0420] 0000000000012300 0000000000012300 0000000000012300 ffff880191b45fd8
0426] Call Trace:
0442] [<ffffffffa04afb42>] rpc_wait_bit_killable+0x30/0x34 [sunrpc]
0459] [<ffffffff812e2997>] __wait_on_bit+0x3e/0x6f
0465] [<ffffffff812e2a36>] out_of_line_wait_on_bit+0x6e/0x77
0479] [<ffffffffa04b02d7>] __rpc_execute+0xf9/0x1b1 [sunrpc]
0501] [<ffffffffa04aa569>] rpc_run_task+0x4f/0x57 [sunrpc]
0515] [<ffffffffa04aa654>] rpc_call_sync+0x3d/0x5a [sunrpc]
0535] [<ffffffffa04b7581>] rpcb_register_call+0x18/0x4b [sunrpc]
0574] [<ffffffffa04b7770>] rpcb_v4_register+0xb4/0x16c [sunrpc]
0612] [<ffffffffa04b26c4>] svc_unregister+0x53/0xe1 [sunrpc]
0643] [<ffffffffa04b285d>] svc_destroy+0x10b/0x123 [sunrpc]
0667] [<ffffffffa07cb883>] nfsd+0x117/0x131 [nfsd]
0674] [<ffffffff8104bd7d>] kthread+0x75/0x7d
0680] [<ffffffff810037a4>] kernel_thread_helper+0x4/0x10
Is it going to timeout, if so when?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: nfsd restart attempt ended in nfsd hang
[not found] ` <alpine.LSU.2.01.1004221105060.18536-SHaQjdQMGhDmsUXKMKRlFA@public.gmane.org>
@ 2010-04-22 15:51 ` Chuck Lever
0 siblings, 0 replies; 2+ messages in thread
From: Chuck Lever @ 2010-04-22 15:51 UTC (permalink / raw)
To: Jan Engelhardt; +Cc: linux-nfs
On 04/22/2010 05:06 AM, Jan Engelhardt wrote:
> Hi,
>
>
> I am observing this hanging nfsd kernel thread:
>
> Linux 2.6.33.2
> 0404] nfsd D ffff88033b29d100 0 26090 2 0x00000000
> 0410] ffff880191b45c60 0000000000000046 0000000000000010 ffff880191b45fd8
> 0415] ffff880101e943c0 ffff880191b45fd8 0000000000012300 0000000000012300
> 0420] 0000000000012300 0000000000012300 0000000000012300 ffff880191b45fd8
> 0426] Call Trace:
> 0442] [<ffffffffa04afb42>] rpc_wait_bit_killable+0x30/0x34 [sunrpc]
> 0459] [<ffffffff812e2997>] __wait_on_bit+0x3e/0x6f
> 0465] [<ffffffff812e2a36>] out_of_line_wait_on_bit+0x6e/0x77
> 0479] [<ffffffffa04b02d7>] __rpc_execute+0xf9/0x1b1 [sunrpc]
> 0501] [<ffffffffa04aa569>] rpc_run_task+0x4f/0x57 [sunrpc]
> 0515] [<ffffffffa04aa654>] rpc_call_sync+0x3d/0x5a [sunrpc]
> 0535] [<ffffffffa04b7581>] rpcb_register_call+0x18/0x4b [sunrpc]
> 0574] [<ffffffffa04b7770>] rpcb_v4_register+0xb4/0x16c [sunrpc]
> 0612] [<ffffffffa04b26c4>] svc_unregister+0x53/0xe1 [sunrpc]
> 0643] [<ffffffffa04b285d>] svc_destroy+0x10b/0x123 [sunrpc]
> 0667] [<ffffffffa07cb883>] nfsd+0x117/0x131 [nfsd]
> 0674] [<ffffffff8104bd7d>] kthread+0x75/0x7d
> 0680] [<ffffffff810037a4>] kernel_thread_helper+0x4/0x10
>
> Is it going to timeout, if so when?
I saw this sort of hang at Connectathon, but didn't have a chance to
track it down.
To verify, rpcbind is still running when the hang occurs? Or are you
running a distribution that uses portmap instead? Is there any other
loopback activity on this system, like a mount, or a misconfigured NFSv4
callback?
--
chuck[dot]lever[at]oracle[dot]com
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2010-04-22 9:06 nfsd restart attempt ended in nfsd hang Jan Engelhardt
[not found] ` <alpine.LSU.2.01.1004221105060.18536-SHaQjdQMGhDmsUXKMKRlFA@public.gmane.org>
2010-04-22 15:51 ` Chuck Lever
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