Bug 999788

Summary:	qemu should give a more friendly prompt when didn't specify read-only for VMDK format disk
Product:	Red Hat Enterprise Linux 6	Reporter:	Sibiao Luo <sluo>
Component:	qemu-kvm	Assignee:	Fam Zheng <famz>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.5	CC:	acathrow, bsarathy, chayang, famz, flang, juzhang, michen, mkenneth, qzhang, stefanha, tlavigne, virt-maint, xfu
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-0.12.1.2-2.409.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	999789 (view as bug list)		Environment:
Last Closed:	2013-11-21 07:12:07 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	999789

Description Sibiao Luo 2013-08-22 06:51:37 UTC

Description of problem:
boot guest with a vmdk format disk which did not specify read-only, qemu will quit with a "'vmdk' invalid format" prompt, I suggest that QEMU should give a more friendly prompt for users, like: VMDK should use a read-only drive.

Version-Release number of selected component (if applicable):
host info:
2.6.32-412.el6.x86_64
qemu-kvm-rhev-0.12.1.2-2.397.el6.x86_64
guest info:
win2012 64bit

How reproducible:
100%

Steps to Reproduce:
1.create a vmdk file format disk.
# qemu-img create -f vmdk vmdk-data-disk.vmdk 10G
2.boot guest with this vmdk format disk which did not specify read-only for it.
e.g:...-drive file=/home/vmdk-data-disk.vmdk,if=none,id=drive-data-disk,format=vmdk,cache=none,werror=stop,rerror=stop -device virtio-blk-pci,bus=pci.0,addr=0x7,drive=drive-data-disk,id=data-disk

Actual results:
after step 2, qemu will quit with a "'vmdk' invalid format" prompt.
qemu-kvm: -drive file=/home/vmdk-data-disk.vmdk,if=none,id=drive-data-disk,format=vmdk,cache=none,werror=stop,rerror=stop: 'vmdk' invalid format
/etc/qemu-ifdown: could not launch network script

Expected results:
I suggest that QEMU should give a more friendly prompt for users, like: VMDK should use a read-only drive.

Additional info:

Comment 7 Sibiao Luo 2013-10-08 03:27:54 UTC

Verified this issue on qemu-kvm-0.12.1.2-2.410.el6.x86_64 with the same steps as comment #0.

host info:
# uname -r && rpm -q qemu-kvm
2.6.32-420.el6.x86_64
qemu-kvm-0.12.1.2-2.410.el6.x86_64

e.g:...-drive file=/mnt/my-data-disk.vmdk,if=none,id=drive-data-disk,format=vmdk,cache=none,werror=stop,rerror=stop -device virtio-blk-pci,bus=pci.0,addr=0x7,drive=drive-data-disk,id=data-disk
qemu-kvm: -drive file=/mnt/my-data-disk.vmdk,if=none,id=drive-data-disk,format=vmdk,cache=none,werror=stop,rerror=stop: 'vmdk' can be only used as read-only device.
/etc/qemu-ifdown: could not launch network script

Results:
after step 2, QEMU will quit and give a more friendly prompt message for users, like: "'vmdk' can be only used as read-only device".

Base on above, this issue has been fixed correctly, move to VERIFIED status, please correct me if any mistake.

Best Regards,
sluo

Comment 8 errata-xmlrpc 2013-11-21 07:12:07 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.

http://rhn.redhat.com/errata/RHSA-2013-1553.html