921480 – virt-install creates sparse logical volumes by default

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Bug 921480 - virt-install creates sparse logical volumes by default

Summary: virt-install creates sparse logical volumes by default

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	python-virtinst
Sub Component:
Version:	6.4
Hardware:	x86_64
OS:	Unspecified
Priority:	unspecified
Severity:	high
Target Milestone:	rc
Target Release:	---
Assignee:	Martin Kletzander
QA Contact:	Virtualization Bugs
Docs Contact:
URL:
Whiteboard:
Duplicates (1):	953303 (view as bug list)
Depends On:	921387
Blocks:
TreeView+	depends on / blocked

Reported:	2013-03-14 10:00 UTC by Jiri Denemark
Modified:	2013-11-21 10:37 UTC (History)
CC List:	13 users (show)
Fixed In Version:	python-virtinst-0.600.0-17.el6
Doc Type:	Bug Fix
Doc Text:
Clone Of:	921387
Environment:
Last Closed:	2013-11-21 10:37:12 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2013:1604	0	normal	SHIPPED_LIVE	python-virtinst bug fix and enhancement update	2013-11-20 21:39:12 UTC

Description Jiri Denemark 2013-03-14 10:00:10 UTC

+++ This bug was initially created as a clone of Bug #921387 +++

Created attachment 709876 [details]
Output from when it crashes when trying to remove storage pool.

Description of problem:

libvirt lvm storage pool usage seems to be broken.  virt-install can't find the lvm path and libvirtd also seems to crash when you try to undefine it.

Version-Release number of selected component (if applicable):

0.10.2-18.el6.x86_64

How reproducible:
95%

Steps to Reproduce:

 (we have an auto-install that uses /home for a majority of space)

Setup: 
1. cd /tmp
2. yes | sudo lvreduce --size $SIZE --resizefs --force /dev/sys/home
3. sudo lvcreate sys -n vg001 -l 100%FREE 
4. sudo vgcreate vg001 /dev/sys/vg001;
5. sudo service libvirtd start
6. sudo /usr/bin/virsh pool-define-as --name vg001 --type logical --target /dev/vg001
7. sudo /usr/bin/virsh pool-start vg001
8. sudo /usr/bin/virsh pool-autostart vg001
9. sudo /usr/bin/virt-install --name testhost --ram 4096 --disk pool=vg001,size=60 --boot network,hd,menu=on --graphics none --network bridge=br0,mac=52:54:00:34:51:4A   --vcpus 4 --os-variant=rhel6

Actual results:

Attempt to create virtual machine (virt-install):

Starting install...
ERROR    internal error Child process (/sbin/lvchange -aln vg001/testhost.img) unexpected exit status 5:   One or more specified logical volume(s) not found.

XML dump:

<pool type='logical'>
  <name>vg001</name>
  <uuid>820d51e9-42ea-cda8-ba3b-d5b08ee29082</uuid>
  <capacity unit='bytes'>512460062720</capacity>
  <allocation unit='bytes'>0</allocation>
  <available unit='bytes'>512460062720</available>
  <source>
    <device path='/dev/mapper/sys-vg001'/>
    <name>vg001</name>
    <format type='lvm2'/>
  </source>
  <target>
    <path>/dev/vg001</path>
    <permissions>
      <mode>0755</mode>
      <owner>-1</owner>
      <group>-1</group>
    </permissions>
  </target>
</pool>

Additional info:

While the bug which prevents libvirt from creating logical volumes with zero allocation is going to be fixed, virt-install should not be doing that by default since it's not expected to work out of the box with LVM.

Comment 3 Martin Kletzander 2013-04-18 09:58:54 UTC

*** Bug 953303 has been marked as a duplicate of this bug. ***

Comment 5 Martin Kletzander 2013-07-16 07:49:04 UTC

Fixed upstream with:

commit 590c8dbebfddb71874de7a98e579264ebae6859f
Author: Martin Kletzander <mkletzan>
Date:   Tue Apr 2 13:51:28 2013 +0200

    Don't support sparse logical volumes

Comment 8 hyao@redhat.com 2013-07-23 06:11:23 UTC

The bug doesn't not reproduce with the following package: 

# rpm -qa libvirt python-virtinst
python-virtinst-0.600.0-17.el6.noarch
libvirt-0.10.2-21.el6.x86_64

Steps: 
Prepare Logical volumn Group pool  named vg001. 
Use virt-install to install a guest:

virt-install --name name --ram 4096 --disk pool=vg001,size=6 --boot cdrom,hd,menu=on --graphics none  --vcpus 4 --os-variant=rhel6


Actual result: 
No error message pops up. Installation process goes on correctly. 

check the image info and not sparse logical volumn is created:
# virsh vol-info /dev/vg001/name.img 
Name:           name.img
Type:           block
Capacity:       6.00 GiB
Allocation:     6.00 GiB

Comment 9 hyao@redhat.com 2013-07-23 06:20:28 UTC

(In reply to hyao from comment #8)
> The bug doesn't not reproduce with the following package: 
> 

The bug doesn't reproduce with the following package:
> # rpm -qa libvirt python-virtinst
> python-virtinst-0.600.0-17.el6.noarch
> libvirt-0.10.2-21.el6.x86_64
> 
> Steps: 
> Prepare Logical volumn Group pool  named vg001. 
> Use virt-install to install a guest:
> 
> virt-install --name name --ram 4096 --disk pool=vg001,size=6 --boot
> cdrom,hd,menu=on --graphics none  --vcpus 4 --os-variant=rhel6
> 
> 
> Actual result: 
> No error message pops up. Installation process goes on correctly. 
> 
> check the image info and not sparse logical volumn is created:
> # virsh vol-info /dev/vg001/name.img 
> Name:           name.img
> Type:           block
> Capacity:       6.00 GiB
> Allocation:     6.00 GiB

Comment 10 errata-xmlrpc 2013-11-21 10:37:12 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-1604.html

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