Red Hat Bugzilla – Bug 880098
3.2 vdsm: performance issues for SPM when one of the domains is inactive
Last modified: 2016-02-10 14:49:57 EST
Created attachment 651823 [details]
Description of problem:
I blocked connectivity from the spm to the iso domain only and once the domain becomes inactive in engine the performance for SPM tasks has dropped.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. block connectivity to the iso domain from the hosts.
2. after domain becomes inactive start sending commands to the spm.
* I don't think that its related to the performance changes but after the domain was inactive I also added my setup to the qa domain (using rhevm-manage-domains tool).
spm commands take much longer because iso domain is reported as stuck in vdsm log
we should not have any performance issues because a domain is inactive.
Additional info: logs
in attached logs:
we can see that CreateImageVDSCommand is sent to vdsm at 10:56:24 but the CreateImageVDSCommand is only issued at 10:58:04
Author: Federico Simoncelli <firstname.lastname@example.org>
Date: Fri Dec 21 11:18:29 2012 -0500
stats: compute the iso prefix asynchronously
The iso prefix must be computed asynchronously because in any other
synchronous operation (e.g.: connectStoragePool, getInfo) vdsm cannot
risk to stop and wait for the iso domain to report its prefix (since
it might be unreachable).
Signed-off-by: Federico Simoncelli <email@example.com>
verified on sf10 with vdsm-4.10.2-11.0.el6ev.x86_64 and libvirt-0.10.2-18.el6_4.eblake.2.x86_64
3.2 has been released