Bug 198468 - configurable delay for killproc()
configurable delay for killproc()
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: initscripts (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Miloslav Trmač
Brock Organ
Depends On:
Blocks: 184403
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Reported: 2006-07-11 08:41 EDT by Joe Orton
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version: RHBA-2007-0303
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-05-01 13:29:49 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)

  None (edit)
Description Joe Orton 2006-07-11 08:41:31 EDT
+++ This bug was initially created as a clone of Bug #198429 +++

Description of problem:
I'll attach a patch which makes the delay between doing a SIGTERM and a SIGKILL
in killproc() configurable.

This can be used to fix a race condition in httpd shutdown.  The httpd parent
will SIGTERM then SIGKILL children at shutdown in a similar way to how
killproc() will SIGTERM and then SIGKILL the httpd parent.  But these two race
and sometimes the parent will get SIGKILLed before it manages to kill all its
children.  This can leave orphans.

So making the killproc() delay configurable means we can ensure that httpd
always wins this race and cleans up its children before the parent gets cleaned up.

See also bug 184403.

-- Additional comment from jorton@redhat.com on 2006-07-11 07:48 EST --
Created an attachment (id=132229)
killproc patch

-- Additional comment from jorton@redhat.com on 2006-07-11 07:51 EST --
Created an attachment (id=132230)
tab-fixed patch

replacement patch which uses tabs for whitespace
Comment 1 RHEL Product and Program Management 2006-08-18 11:12:37 EDT
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
Comment 2 David Lawrence 2006-09-05 23:24:00 EDT
adding qa_ack+ for 4.5
Comment 3 Bill Nottingham 2006-11-20 16:22:50 EST
Added in CVS, will be in 7.93.26.EL-1 or later.
Comment 7 Red Hat Bugzilla 2007-05-01 13:29:49 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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