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

[Keith Owens <kaos@sgi.com>]

On Mon, 11 Mar 2002 14:49:14 -0500, 
Dave Alden <alden@math.ohio-state.edu> 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.