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Re: odd problem with XFS & NFS (locking up system)

To: Dave Alden <alden@xxxxxxxxxxxxxxxxxxx>
Subject: Re: odd problem with XFS & NFS (locking up system)
From: Keith Owens <kaos@xxxxxxx>
Date: Tue, 12 Mar 2002 06:56:42 +1100
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: Your message of "Mon, 11 Mar 2002 14:49:14 CDT." <20020311144914.A6662@xxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Mon, 11 Mar 2002 14:49:14 -0500, 
Dave Alden <alden@xxxxxxxxxxxxxxxxxxx> wrote:
>Hi,
>  I'm having an odd problem with the latest CVS (as of 03/11/02 11:00am EST).
>I've compiled and installed the kernel, but whenever I attempt to copy a
>file over NFS, the server locks up.  Any windows I have open on the server
>stop responding.  I tried to a <ctrl>-A, followed by a bt and I got:
>
>Entering kdb (current=0xc045c000, pid 0) due to Keyboard Entry
>kdb> bt
>    EBP       EIP         Function(args)
>0xc01053b0 0xc01053d3 default_idle+0x23
>                               kernel .text 0xc0100000 0xc01053b0 0xc01053e0
>           0xc0105452 cpu_idle+0x52
>                               kernel .text 0xc0100000 0xc0105400 0xc0105470

Under kdb, do
  set LINES 2000
  ps
  bta
The fact that you can do control-A and get to kdb means that it is not
a complete kernel lockup, rather some code is sitting in interruptible
wait.  ps and bta will show which tasks are waiting and why.


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