Bug 1488542

Summary: "No such drive" error on live merge of one disk causes merge of other disk to fail on engine.
Product: Red Hat Enterprise Virtualization Manager Reporter: Koutuk Shukla <kshukla>
Component: vdsmAssignee: Ala Hino <ahino>
Status: CLOSED ERRATA QA Contact: Kevin Alon Goldblatt <kgoldbla>
Severity: high Docs Contact:
Priority: unspecified    
Version: 4.1.4CC: ahino, bcholler, bzlotnik, kshukla, lsurette, michal.skrivanek, ratamir, rbalakri, Rhev-m-bugs, rhv-bugzilla-bot, srevivo, tnisan, ycui, ykaul
Target Milestone: ovirt-4.2.0Keywords: ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: vdsm-4.20.8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1509614 (view as bug list) Environment:
Last Closed: 2018-05-15 17:51:57 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Storage RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1509614    

Description Koutuk Shukla 2017-09-05 16:03:37 UTC 
Description of problem:

During live snapshot deletion on vm holding 5 disks. We see that the merge is sucessfull for 4 disks and 1 fails on engine side but completes on host side.
According to vdsm.log it appears that when a Live Merge for one disk was being performed, a No such drive error was reported while checking the block job after the pivot had completed. The volume that caused this was the volume that was just pivoted from, i.e. the original active volume. However this merge completed sucessfully but caused other disk merge operation to fail on engine side but complete on host side.  The images are marged illegal on rhevm database and lv's remain unremoved on Host.

Issue seems similar to the bug https://bugzilla.redhat.com/show_bug.cgi?id=1447437.  Opening this new bug to check further if this new bug or regression. 


Version-Release number of selected component (if applicable):
rhevm-4.1.4.2-0.1.el7.noarch
libvirt-daemon-2.0.0-10.el7_3.9.x86_64
vdsm-4.19.20-1.el7ev.x86_64

How reproducible:
No

Steps to Reproduce:
1.
2.
3.

Actual results:
"No such drive" LookupErrors occurred while checking a block job after the pivot had completed, causing the engine to "fail" merges for two other disk


Expected results:
Merge should complete without any errors.
Comment 16 RHV bug bot 2017-12-06 15:56:28 UTC 
according to pathces, fixes are in vdsm not engine, changing component to add to right ET.
Comment 17 RHV bug bot 2017-12-06 16:15:22 UTC 
INFO: Bug status wasn't changed from MODIFIED to ON_QA due to the following reason:

[Project 'vdsm'/Component 'ovirt-engine' mismatch]

For more info please contact: rhv-devops
Comment 21 Kevin Alon Goldblatt 2017-12-12 11:55:02 UTC 
Tested with the following code:
--------------------------------
ovirt-engine-4.2.0-0.6.el7.noarch
vdsm-4.20.9-1.el7ev.x86_64


Verified with the following scenario:
-----------------------------------------------------
1.Create Vm with 5 disks
2.Create snapshot s1
3.Start VM add data to disks
4.Create snapshot s2
5.Delete snapshot s1 - all snapshot is merged correctly, all disk snapshots are removed, no "No such drive error" reported


Moving to VERIFIED
Comment 26 errata-xmlrpc 2018-05-15 17:51:57 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2018:1489
Comment 27 Franta Kust 2019-05-16 13:08:56 UTC 
BZ<2>Jira Resync