Bug 888476

Summary: virt-manager ui is blocked while connecting to remote libvirt
Product: [Fedora] Fedora Reporter: Fabian Deutsch <fdeutsch>
Component: virt-managerAssignee: Cole Robinson <crobinso>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 18CC: berrange, bloch, crobinso, hbrock, jforbes, virt-maint
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Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2013-08-31 13:59:56 EDT Type: Bug
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Fabian Deutsch 2012-12-18 13:37:08 EST
Description of problem:
The virt-manager ui freezes when I connect to a remote libvirt instance over a slow connection.

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

How reproducible:

Steps to Reproduce:
1. Launch virt-manager and add remote libvirt instance qemu+ssh which is behind a slow link
2. Double-click on freshly created connection
Actual results:
virt-manager freezes until the connection is established - including all open guest windows!

Expected results:
I can happily continue working with the UIs beeing frozen.

Additional info:
Comment 1 Fedora End Of Life 2013-01-16 07:47:34 EST
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Comment 2 Adam Huffman 2013-02-07 08:12:11 EST
I think I'm seeing this on a system I just upgraded to Fedora 18.  I have about 15 remote systems and they come up as "connecting", with the virt-manager UI unresponsive.
Comment 3 Cole Robinson 2013-08-31 13:59:56 EDT
There's two pieces here: initial connection polling is done synchronously. This is fixed upstream and in F20/rawhide, but is not backportable due to its invasiveness. Closing this as RAWHIDE

The other issue is that virt-manager just doesn't work well with high latency connections. There's things we can do to improve that are tracked else where, but at the end of the day it's never going to be quick when every tiny API call has a half second round trip.
Comment 4 Fabian Deutsch 2013-09-02 08:39:55 EDT
Thanks for this update.