Bug 3373

Summary: 'exec' feature creates zombie processes
Product: [Retired] Red Hat Linux Reporter: rotten
Component: swatchAssignee: Preston Brown <pbrown>
Severity: high Docs Contact:
Priority: high    
Version: 6.0   
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 1999-08-31 17:22:21 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description rotten 1999-06-09 20:51:04 UTC
When using the 'exec=command' feature in the 2nd
tab-deliminated field of the ~/.swatchrc, the command
executed does not terminate properly when it is finished--
it becomes a zombie process, every time (this has been
tested using such innocuous commands as 'exec=echo').

When swatch is triggered enough times, the zombie processes
build up, eventually filling the process table and thus
requiring a reboot.

Comment 1 Alan Cox 1999-06-12 15:19:59 UTC
You can clear the zombies by killing their parent. So killing swatch
will clean up the stuff it fails to wait for.
(Not a fix but avoids reboots)

------- Additional Comments From   06/12/99 12:44 -------
Not to split hairs, but I think it is worth noting that killing swatch
will not successfully clean up the zombie processes, nor prevent more
from being spawned... it is necessary to kill perl itself.
And a side note-- this bug is particularly detrimental on unattended
machines, since killing perl isn't an option in that situation.

Comment 2 Jay Turner 1999-06-29 15:10:59 UTC
This issue has been forwarded to a developer for further action.

Comment 3 Preston Brown 1999-08-31 17:22:59 UTC
fixed in swatch-2.2-8 and later, available soon in RawHide and
eventually our next release.