At 07:22 PM 3/4/99 , Matthew Dillon wrote:
> Well, 10 processes doing a find are not supposed to lockup a machine.
>
> However, there is another potential problem with the script below ... if
> the script is run as root, the find will cross mount points including
> the /proc mount point. Now running xargs and random process's memory
> spaces *could* certainly lockup a machine. /proc does has reentrancy
> issue with multiple processes accessing it at the same time.
>
> Try changing the 'find' to 'find -x'. If this still locks up the machine
> we will have to then determine whether it occurs under 4.x as well, or
> if it only occurs under 3.x.
Interesting... I thought there was something else going on, because when I
walk back to the machine, the drive is not even spinning. I will have to
wait until I go to the office to try it, as I need to physically reboot the
unit if it 'works'... If it is the /proc issue, what would be the safest
way to proctect against it ? Also, it does not take many iterations to
lock up the machine. Three will do it. To limit that via login.access
would hose most users.
---Mike
**********************************************************************
Mike Tancsa, Network Admin * m...@sentex.net
Sentex Communications Corp, * http://www.sentex.net/mike
Cambridge, Ontario * 01.519.651.3400
Canada *
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