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Bug 1138335

Summary: Suspending a vm with shared bootable disk will cause other vms that uses the bootable disk to enter into paused state due to storage I/O problem
Product: [Retired] oVirt Reporter: Raz Tamir <ratamir>
Component: ovirt-engine-coreAssignee: bugs <bugs>
Status: CLOSED WORKSFORME QA Contact: meital avital <mavital>
Severity: high Docs Contact:
Priority: unspecified    
Version: 3.5CC: amureini, ecohen, gklein, iheim, michal.skrivanek, ratamir, rbalakri, yeylon
Target Milestone: ---   
Target Release: 3.5.1   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: virt
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-11-07 10:37:35 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Virt RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1084103    
Bug Blocks:    
Attachments:
Description Flags
vdsm and engine logs none

Description Raz Tamir 2014-09-04 14:18:08 UTC
Created attachment 934446 [details]
vdsm and engine logs

Description of problem:
2 vms that shares the same bootable disk as their bootable disk can cause a situation that if one of the vms is suspended, the other vm will pause due to storage I/O problem.

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


How reproducible:
100%

Steps to Reproduce:
setup: 2 vms, 1 bootable disk (shared)
1. run both of the vms
2. suspend one of them
3.

Actual results:
the second vm will enter into pause mode

Expected results:


Additional info:

Comment 1 Raz Tamir 2014-09-04 14:51:07 UTC
Update:
Also shutting down one of the vms will cause the same behaviour.

Comment 2 Allon Mureinik 2014-09-11 09:46:03 UTC
Probably not an interesting usecase, but leaving the virt stakeholders to triage - not sure what the suspension does to this disk

Comment 3 Allon Mureinik 2014-10-30 13:39:01 UTC
Raz, can we get the qemu and libvirt logs too please?

Comment 4 Michal Skrivanek 2014-10-30 14:59:44 UTC
so the disk is bootable in 2 VMs, shared&writeable in 2 VMs and you're running both at the same time?

Comment 5 Raz Tamir 2014-11-02 11:28:40 UTC
Hi Allon,
I can't reproduce this.

Comment 6 Allon Mureinik 2014-11-07 10:37:35 UTC
(In reply to ratamir from comment #5)
> Hi Allon,
> I can't reproduce this.
Closing, based on this comment.
Raz - if you're encounter/reproduce this again, please re-open the bug.
Thanks!