Bug 1477496

Summary:	[BLOCKED on bug 1155275] Online disk resize not detected by RHEL when using Cinder from Openstack external provider
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Marian Jankular <mjankula>
Component:	vdsm	Assignee:	Idan Shaby <ishaby>
Status:	CLOSED WONTFIX	QA Contact:	Elad <ebenahar>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	4.1.0	CC:	ebenahar, lsurette, mjankula, srevivo, ycui, ylavi
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-08-06 08:57:20 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:	1155275
Bug Blocks:	1539837

Description Marian Jankular 2017-08-02 09:22:13 UTC

Description of problem:
When online resizing a virtio and virtio-scsi disk, the guests (CentOS 7, RHEL 7.3) do not detect the disc change online. Instead, I have to shut down the VMs and start them again - then they see the new disk size.

Version-Release number of selected component (if applicable):
I am using RHEV 4.1 and Red Hat Ceph Storage 2.2.
Ceph is attached to RHEV via OpenStack Cinder.

How reproducible:
everytime at customer environment

Steps to Reproduce:
1. install rhev (manager + host + storage)
2. add OpenStack Cinder as external provider
3. create vm with cinder as virtual disk
4, live grow cinder

Actual results:
new size is detected only when vm is powered down and powered up

Expected results:
new size will be detected in RHEL without shutting down the vm

Additional info:
feature is tech preview, so you can consider this as RFE as well

Comment 1 Yaniv Kaul 2017-08-02 09:30:42 UTC

Is it supported in Cinder? https://bugzilla.redhat.com/show_bug.cgi?id=1315799

What did you do in the guest? any rescan?