Bug 73615 - Service manager blocked signals cause user service scripts to fail
Summary: Service manager blocked signals cause user service scripts to fail
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: clumanager
Version: 2.1
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Lon Hohberger
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2002-09-06 19:15 UTC by Lon Hohberger
Modified: 2008-05-01 15:38 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2002-09-06 19:16:42 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
Example of how to break 1.0.11 during 'service start'. (172 bytes, text/plain)
2002-09-06 20:04 UTC, Lon Hohberger
no flags Details


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2002:226 0 normal SHIPPED_LIVE Fixes for clumanager addressing starvation and service hangs 2002-10-08 04:00:00 UTC

Description Lon Hohberger 2002-09-06 19:15:56 UTC
Description of Problem:
When clustering certain applications which use signals to synchronize or
communicate with eachother, the tasks fail to run properly because the service
manager spawns them with most or all signals blocked.


Version-Release number of selected component (if applicable):
1.0.11, CVS/Development


How Reproducible: Every Time


Steps to Reproduce:
1. Create a process which goes to sleep and uses SIGALARM to wake itself up. 
Have it wait forever until SIGALARM is called.
2. Create a service script which spawns this process in the "start" path.
3. Create a service which uses this script.
4. Attempt to enable the service.  Watch the service script hang.

Actual Results:
Hung service start/Application broken.


Expected Results:
Clean service start.

Comment 1 Lon Hohberger 2002-09-06 19:16:36 UTC
I will fix this ASAP.

Comment 2 Lon Hohberger 2002-09-06 20:01:55 UTC
Fix in pool.

Comment 3 Lon Hohberger 2002-09-06 20:04:02 UTC
Created attachment 75324 [details]
Example of how to break 1.0.11 during 'service start'.


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