Description of problem: Vms are loosing their network interfaces when they are restarted at preview mode. In case of previewing a VM with cinder as a storage provider, the VM starts booting 'normally', without loading the ram image, also the VM has no network interfaces, decided not to open a separate bug for cinder as it is seem to be same issue. This behavior is not reproducible on RHEVM 3.5 Version-Release number of selected component (if applicable): rhevm-3.6.1-0.2.el6.noarch How reproducible: 100% Steps to Reproduce: [Cinder Storage] 1.preview a VM with ram snapshot enabled(restored) [other storage] 1.preview a VM with ram snapshot enabled(restored) 2.start the VM, power off the VM 3.start the VM Actual results: VMs are loosing connectivity and in case of cinder as backend ram is not restored. Expected results: VM shouldn't loose it's connectivity, live snapshots should be previewed Additional info:
Looking at the affected environment, seems that the nic of the VM is unplugged on previewing. @Alona - any recent issue regarding restoring nic status when previewing a snapshot?
Created attachment 1100511 [details] logs
Created attachment 1100512 [details] vdsm.log
This will probably be two separate bugs, one on the disconnected nic while previewing a snapshot, and one on cinder->ram issue.
I really don't get how are the two issues connected, please open a bug separate bug for each of the two issues
*** Bug 1286685 has been marked as a duplicate of this bug. ***
As far as I know, the plugged/unplugged state of the nic is not preserved when creating a snapshot.(In reply to Daniel Erez from comment #1) > Looking at the affected environment, seems that the nic of the VM is > unplugged on previewing. @Alona - any recent issue regarding restoring nic > status when previewing a snapshot? There is a bug regarding it -https://bugzilla.redhat.com/1270583 The fix should be part of 3.6.1.
This bug will handle the interface disconnection issue: Actual results: VMs are loosing connectivity during snapshot preview Expected results: VMs shouldn't loose their connectivity.
(In reply to Ori Gofen from comment #8) > This bug will handle the interface disconnection issue: > > Actual results: > VMs are loosing connectivity during snapshot preview > > Expected results: > VMs shouldn't loose their connectivity. Based on this, this BZ is unrelated to storage - it lays somewhere between the virt and network areas. (In reply to Alona Kaplan from comment #7) > As far as I know, the plugged/unplugged state of the nic is not preserved > when creating a snapshot.(In reply to Daniel Erez from comment #1) > > Looking at the affected environment, seems that the nic of the VM is > > unplugged on previewing. @Alona - any recent issue regarding restoring nic > > status when previewing a snapshot? > > There is a bug regarding it -https://bugzilla.redhat.com/1270583 > The fix should be part of 3.6.1. Moving to network based on this statement. Alona - up to you if you just want to close this as a duplicate or do anything else there.
*** This bug has been marked as a duplicate of bug 1270583 ***