Bug 417341

Summary:	'system-config-lvm' hangs with many LVs on a volume group
Product:	[Fedora] Fedora	Reporter:	Heinz-Peter Heidinger <hph>
Component:	system-config-lvm	Assignee:	Jim Parsons <jparsons>
Status:	CLOSED WONTFIX	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	7	CC:	agk, dwysocha, mbroz, mclasen, prockai, triage
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-06-17 02:55:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Heinz-Peter Heidinger 2007-12-09 17:43:01 UTC

Description of problem:

system-config-lvm hangs if a volume group carries alot of locical volumes.
I 'sliced' two 750GB disks (~700GB netto) into ~20GB logical volumes which
resulted in 32 logical volumes on each volume group. 

Well. I did not click that all together but used a command to do that - for
convenience:

   while :; do lvcreate -l <LVsize> <VG>; done

... which created LVs with consecitive LV names of even size ... until it
throwed "Insufficiemt space ..." messages - where I stopped the loop with CTL-C.
Requesting the result from LVM with 'lvs' it showd everything fine: 32 lvols
created on each VG.

Stepping to the 'system-config-lvm' GUI and asking for the lvols of one of the
VGs triggered the normel 'reload'; i.e. the progress bar bumps back and forth to
show that work is in progress to scan the VGs for LVs ... but then the progress
bar freezes and the GUI hangs.

Closing the GUI and removing all the LVs from the explained VGs get the GUI back
to live.

How reproducible:
see above


Steps to Reproduce:
see above

  
Actual results:
see above

Expected results:

A volume group can provide 256 LVs (default) - even more it the "max LVs"
parameter is changed during VG creation. The tool should not hang if the number
of LVs is bigger than just 10.

Additional info:
Happened under Fedora-7.
I tried that with the defailt LP size of 4MB and a much bigger (64MB) LP size I
suspected the small LP size the sulprit at first. But no change in the result.
So it seems to be the number of LVs, that triggers the hang.

Comment 1 Bug Zapper 2008-05-14 15:08:38 UTC

This message is a reminder that Fedora 7 is nearing the end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 7. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '7'.

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Comment 2 Bug Zapper 2008-06-17 02:55:00 UTC

Fedora 7 changed to end-of-life (EOL) status on June 13, 2008. 
Fedora 7 is no longer maintained, which means that it will not 
receive any further security or bug fix updates. As a result we 
are closing this bug. 

If you can reproduce this bug against a currently maintained version 
of Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.