Re: [Openstack] Folsom's `nova-compute` reports wrong amount of free disk space

2013-06-06 Thread Riccardo Murri
Hello,

regarding this question:

On 6 June 2013 13:12, Riccardo Murri  wrote:
> (2) Most disk space seems to be wasted by old (and presumably failed)
> image conversion attempts in `/var/lib/nova/instances/_base`.  How
> can we clean those up?  Can we just delete the files or some
> special care / database edit is needed?

We have found that the default setting
`image_cache_manager_interval=0` effectively *disables* the image
cache manager, but it still shows up as running in the logs. I've
reported this as a bug:

https://bugs.launchpad.net/nova/+bug/1188226

After setting image_cache_manager_interval to >0, the nova-compute
process took care of wiping the unused base files and now the nodes
are functional again.

Ciao,
Riccardo

--
Riccardo Murri
http://www.gc3.uzh.ch/people/rm

Grid Computing Competence Centre
University of Zurich
Winterthurerstrasse 190, CH-8057 Zürich (Switzerland)
Tel: +41 44 635 4222
Fax: +41 44 635 6888

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[Openstack] Folsom's `nova-compute` reports wrong amount of free disk space

2013-06-06 Thread Riccardo Murri
   nova  21474836480 apr 26 14:27
7e93ee4745fe5a825aff33d0731b12ade576fffc
-rw-r--r-- 1 libvirt-qemu kvm   21474836480 apr 26 14:35
7e93ee4745fe5a825aff33d0731b12ade576fffc_20
-rw-r--r-- 1 nova nova   5368709120 apr 10 11:24
90551e161412bd971a2f323fd9cb9d8b96a56f5f
-rw-r--r-- 1 libvirt-qemu kvm  107374182400 apr 29 17:16
90551e161412bd971a2f323fd9cb9d8b96a56f5f_100
-rw-r--r-- 1 libvirt-qemu kvm   21474836480 apr 10 11:37
90551e161412bd971a2f323fd9cb9d8b96a56f5f_20
-rw-r--r-- 1 libvirt-qemu kvm5368709120 apr 10 11:24
90551e161412bd971a2f323fd9cb9d8b96a56f5f_5
-rw-r--r-- 1 libvirt-qemu kvm   85899345920 apr 17 20:42
90551e161412bd971a2f323fd9cb9d8b96a56f5f_80
-rw-r--r-- 1 nova nova  21474836480 mag 14 16:40
db5ff3aeff506b37035f0ff1c07acf96311f1172
-rw-r--r-- 1 libvirt-qemu kvm   21474836480 mag 14 16:43
db5ff3aeff506b37035f0ff1c07acf96311f1172_20
-rw-r--r-- 1 nova nova 107374182400 apr 29 17:17
ephemeral_0_100_None
-rw-r--r-- 1 libvirt-qemu kvm  107374182400 apr 29 17:17
ephemeral_0_100_None_100
-rw-r--r-- 1 nova nova  21474836480 mag 27 14:46 ephemeral_0_20_None
-rw-r--r-- 1 libvirt-qemu kvm   21474836480 mag 27 14:46
ephemeral_0_20_None_20

However, only one file in `instances/_base` is in use (both instances
use the same base image):

root@node-09-02-11:/var/lib/nova/instances/_base# fuser -v *
 USERPID ACCESS COMMAND
/var/lib/nova/instances/_base/90551e161412bd971a2f323fd9cb9d8b96a56f5f_5:
 libvirt-qemu   3225 f kvm
 libvirt-qemu  24110 f kvm

Can the other files in `_base` be safely deleted?

Thanks for any help,
Riccardo

--
Riccardo Murri
http://www.gc3.uzh.ch/people/rm

Grid Computing Competence Centre
University of Zurich
Winterthurerstrasse 190, CH-8057 Zürich (Switzerland)
Tel: +41 44 635 4222
Fax: +41 44 635 6888

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