Bug 1002648 - thinlvm driver fails to create the pool if the outer vg is rounded to the GB
Summary: thinlvm driver fails to create the pool if the outer vg is rounded to the GB
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: openstack-cinder
Version: 3.0
Hardware: Unspecified
OS: Unspecified
unspecified
low
Target Milestone: beta
: 4.0
Assignee: Eric Harney
QA Contact: Giulio Fidente
URL:
Whiteboard: storage
Depends On: 1022714
Blocks: 975606
TreeView+ depends on / blocked
 
Reported: 2013-08-29 16:11 UTC by Giulio Fidente
Modified: 2016-04-26 21:46 UTC (History)
6 users (show)

Fixed In Version: openstack-cinder-2013.2-0.9.b3.el6ost
Doc Type: Bug Fix
Doc Text:
Bug 1022714 has subsumed these changes, so just document that one.
Clone Of:
Environment:
Last Closed: 2013-12-20 00:22:25 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Launchpad 1218479 0 None None None Never
OpenStack gerrit 34481 0 None None None Never
OpenStack gerrit 37818 0 None None None Never
Red Hat Product Errata RHEA-2013:1859 0 normal SHIPPED_LIVE Red Hat Enterprise Linux OpenStack Platform Enhancement Advisory 2013-12-21 00:01:48 UTC

Description Giulio Fidente 2013-08-29 16:11:51 UTC 
Description of problem:
When using the thinlvm driver, if the cinder-volumes VG is manually created and perfectly rounded to the GB (eg. using vgcreate -L 100G), cinder fails to allocate the volumes pool within it


Version-Release number of selected component (if applicable):
openstack-cinder-2013.1.3-2.el6ost.noarch


Steps to Reproduce:
1. truncate -s 100G backingfile
2. losetup -f backingfile
3. vgcreate cinder-volumes /dev/loopX
4. configure cinder with the thinlvm driver
5. create a new volume in cinder


Actual results:
the following appears in the volume.log (and the POOL creation fails):

Command: sudo cinder-rootwrap /etc/cinder/rootwrap.conf lvcreate -T -L 100g cinder-volumes/cinder-volumes-pool
    Exit code: 5
    Stdout: ''
    Stderr: ' Volume group "cinder-volumes" has insufficient free space (25599 extents): 25600 required.\n'
Comment 2 Ayal Baron 2013-09-08 11:58:46 UTC 
Giulio, why is this not a packstack bug?
Comment 3 Giulio Fidente 2013-09-09 08:17:52 UTC 
compared to the vg/lv structure in use by the regular lvm driver, the thinlvm driver uses an additional layer:

 VG (cinder-volumes)
  |
  |-> LVs POOL
       |
       |-> LV (volume UUID)

the thinlvm driver expects the outer VG to be available (as per the regular lvm driver) but it will create the LVs POOL on its own if it doesn't exist yet

I think we could get packstack to create the LVs POOL but the bug currently affects Cinder because we let Cinder to create it (packstack only creates the more external VG).
Comment 4 Eric Harney 2013-09-17 18:41:25 UTC 
Should be fixed in Havana-3.
Comment 6 Scott Lewis 2013-11-19 16:54:17 UTC 
Auto adding >= MODIFIED bugs to beta
Comment 12 Giulio Fidente 2013-12-11 17:12:28 UTC 
verified using openstack-cinder-2013.2-8.el6ost.noarch
Comment 14 errata-xmlrpc 2013-12-20 00:22:25 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/RHEA-2013-1859.html
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