596352 – clvmd -d 2 does not fork

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Bug 596352 - clvmd -d 2 does not fork

Summary: clvmd -d 2 does not fork

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	lvm2
Sub Component:
Version:	6.0
Hardware:	All
OS:	Linux
Priority:	low
Severity:	medium
Target Milestone:	rc
Target Release:	---
Assignee:	Milan Broz
QA Contact:	Corey Marthaler
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	596977
TreeView+	depends on / blocked

Reported:	2010-05-26 16:11 UTC by Nate Straz
Modified:	2013-03-01 04:09 UTC (History)
CC List:	11 users (show)
Fixed In Version:	lvm2-2.02.82-1.el6
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2011-05-19 14:25:55 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2011:0772	0	normal	SHIPPED_LIVE	lvm2 bug fix and enhancement update	2011-05-18 18:08:31 UTC

Description Nate Straz 2010-05-26 16:11:23 UTC

Description of problem:

While trying to debug a startup hang I wanted to use the "-d 2" option to dump debug messages to syslog while starting up as normal.  Unfortunately clvmd does not run in the background in this case.

Version-Release number of selected component (if applicable):
lvm2-cluster-2.02.65-1.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. clvmd -d 2
2. clvmd should continue running while returning you to the command prompt.
  
Actual results:
clvmd runs in the foreground

Expected results:
clvmd run in the background

Additional info:

Comment 1 Nate Straz 2010-05-26 16:12:00 UTC

From the man page for clvmd:

OPTIONS
       -d [<value>]
              Enable debug logging. Value can be 0, 1 or 2.
              0 disables debug logging in a running clvmd
              1 sends debug logs to stderr (clvmd will not fork in this case)
              2 sends debug logs to syslog
              If -d is specified without a value then 1 is assumed if you  are
              starting  a  new clvmd, 2 if you are enabling debug in a running
              clvmd.

Comment 2 Christine Caulfield 2010-05-26 16:17:35 UTC

The real problem is the -d is overloaded. there should be a separate flag to indicate to clvmd that it should not fork.

Comment 4 Nate Straz 2010-05-26 16:51:38 UTC

Can this be fixed as documented so I can debug startup timeouts?

Comment 5 RHEL Program Management 2010-06-07 16:04:35 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

Comment 6 RHEL Program Management 2010-07-15 14:30:11 UTC

This issue has been proposed when we are only considering blocker
issues in the current Red Hat Enterprise Linux release. It has
been denied for the current Red Hat Enterprise Linux release.

** If you would still like this issue considered for the current
release, ask your support representative to file as a blocker on
your behalf. Otherwise ask that it be considered for the next
Red Hat Enterprise Linux release. **

Comment 8 Milan Broz 2010-11-16 14:03:54 UTC

There should be new option (as already mentioned in comment #2).

Comment 9 Milan Broz 2011-01-17 19:40:58 UTC

Proposed patch here
https://www.redhat.com/archives/lvm-devel/2011-January/msg00126.html

Comment 10 Peter Rajnoha 2011-01-27 13:34:32 UTC

(In reply to comment #0)
> Steps to Reproduce:
> 1. clvmd -d 2
> 2. clvmd should continue running while returning you to the command prompt.

One important note:
Please be aware of the fact that you have to use "clvmd -d2" not "clvmd -d 2" (leave the space out!).

Comment 12 Corey Marthaler 2011-04-06 18:59:32 UTC

Fix verified in the latest rpms. 

* Note: like mentioned in comment #10, "clvmd -d2" not "clvmd -d 2" is what's required for this to work. "clvmd -d 2" evals to no argument, and thus is the same as -d1.


2.6.32-128.el6.x86_64

lvm2-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
lvm2-libs-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
lvm2-cluster-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
udev-147-2.35.el6    BUILT: Wed Mar 30 07:32:05 CDT 2011
device-mapper-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
device-mapper-libs-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
device-mapper-event-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
device-mapper-event-libs-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
cmirror-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011

Comment 13 errata-xmlrpc 2011-05-19 14:25:55 UTC

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 therefore 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.

http://rhn.redhat.com/errata/RHBA-2011-0772.html

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