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Re: 2.4.2-XFS stability? (was: Re: O_DIRECT buglet)

To: Russell Cattelan <cattelan@xxxxxxxxxxx>
Subject: Re: 2.4.2-XFS stability? (was: Re: O_DIRECT buglet)
From: Lennert Buytenhek <buytenh@xxxxxxx>
Date: Mon, 2 Apr 2001 17:46:27 -0400
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <3AC80B4E.796414A8@xxxxxxxxxxx>; from cattelan@xxxxxxxxxxx on Mon, Apr 02, 2001 at 12:17:02AM -0500
References: <20010401121248.A14579@xxxxxxx> <3AC75B93.19AB5A8C@xxxxxxxxxxx> <20010401125601.A15276@xxxxxxx> <3AC75E89.7AFE485A@xxxxxxxxxxx> <20010401191059.A6160@xxxxxxx> <3AC80B4E.796414A8@xxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
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On Mon, Apr 02, 2001 at 12:17:02AM -0500, Russell Cattelan wrote:

> > Another thing: how stable is 2.4.2-XFS supposed to be? I'm getting dcache-
> > related oopses about twice a day on four machines under moderate load
> > (typically three rsync's, xfs_fsr), but I have no idea whether this is
> > XFS-related or not.
> 
> Well we were thinking more that this suggests.
> Somebody else is having trouble with dcache and nfs... it would
>  seems something is a muck.

nfs server, that would be? My disks are exported via nfs, but not mounted by
any clients.


> Can you give a bit more info as to what you are doing the causes things
> to go bad?

Nothing special I'd say. Often, just coming here in the morning and seeing my
machine wedged. I had no such trouble on 2.2, and these machines never had
disk or memory problems.


This looks suspicious (happened a few minutes ago). Should I try turning
xfs_fsr off?

Apr  2 23:00:00 page fsr[2746]: / startino=0 
Apr  2 23:00:05 page fsr[2755]: /attic startino=0 
Apr  2 23:00:05 page fsr[2756]: /boot startino=0 
Apr  2 23:00:05 page fsr[2757]: /data startino=0 
Apr  2 23:00:06 page fsr[2760]: /usr startino=0 
Apr  2 23:00:55 page kernel: kernel BUG at dcache.c:349!
Apr  2 23:00:55 page kernel: invalid operand: 0000
Apr  2 23:00:55 page kernel: CPU:    0
Apr  2 23:00:55 page kernel: EIP:    0010:[prune_dcache+117/332]
Apr  2 23:00:55 page kernel: EFLAGS: 00010292
Apr  2 23:00:55 page kernel: eax: 0000001c   ebx: c2c070e0   ecx: 00000000   
edx: 00000001
Apr  2 23:00:55 page kernel: esi: c2c070c0   edi: c0c11a40   ebp: 0000009f   
esp: c12e7f98
Apr  2 23:00:55 page kernel: ds: 0018   es: 0018   ss: 0018
Apr  2 23:00:55 page kernel: Process kswapd (pid: 4, stackpage=c12e7000)
Apr  2 23:00:55 page kernel: Stack: c02aff41 c02b0001 0000015d 00010f00 
00000020 00000004 00000000 c01426b1 
Apr  2 23:00:55 page kernel:        000001c2 c012b06b 00000006 00000004 
00010f00 c02abdd1 c12e6239 0008e000 
Apr  2 23:00:55 page kernel:        c012b0fb 00000004 00000000 c12f9fb0 
c0105000 00000031 c010752f 00000000 
Apr  2 23:00:55 page kernel: Call Trace: [shrink_dcache_memory+33/48] 
[do_try_to_free_pages+95/124] [kswapd+115/272] [empty_bad_page+0/4096] 
[kernel_thread+35/48] 
Apr  2 23:00:56 page kernel: 
Apr  2 23:00:56 page kernel: Code: 0f 0b 83 c4 0c 8d 46 18 8b 53 f8 8b 48 04 89 
4a 04 89 11 89 



cheers,
Lennert

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