fork wedging (I think)

Peter Jeremy peterjeremy at optushome.com.au
Thu Mar 1 06:44:47 UTC 2007


On 2007-Mar-01 11:48:54 +1030, Daniel O'Connor <doconnor at gsoft.com.au> wrote:
>The problem seems to occur when the acquisition process (called the Recorder)
>tries to fork off a new child.

Your description and the ps output suggest a filesystem deadlock.

>Does anyone have any suggestions for debugging it? I will try and get a crash
>dump the next time it happens although it's going to be difficult if I can't
>use sysctl :(
>
>(I don't have console access and the system is in a very remote location just
>to make it extra fun)

A console would make it easy.  My suggestion is to keep a shell open
in /rescue and use './sysctl' (and other commands in rescue).  I think
you will still be able to execute static executables in the current
directory vis a relative path even if the FS is deadlocked.  (As long
as your shell isn't trying to write command history to a file).

-- 
Peter Jeremy
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