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Bug 1078809

Summary:	can not boot qemu-kvm-rhev with rbd image
Product:	Red Hat Enterprise Linux 7	Reporter:	Jun Li <juli>
Component:	qemu-kvm	Assignee:	Kevin Wolf <kwolf>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	7.0	CC:	acathrow, cristi.falcas, juli, juzhang, knoel, kwolf, lbopf, michen, mrezanin, sluo, virt-maint, xfu
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	qemu-kvm-rhev-1.5.3-56.el7	Doc Type:	Bug Fix
Doc Text:	Previously, qemu-kvm-rhev failed to boot with rbd image, and returned an "Unknown Protocol" error. Now, the rbd driver is compiled in qemu-kvm-rhev, and an unsuccessful boot produces more meaningful error messages.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-13 09:26:02 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:	1080820

Description Jun Li 2014-03-20 10:45:36 UTC

Description of problem:
Currently, qemu-kvm should not support rbd; qemu-kvm-rhev should support rbd.
When boot qemu-kvm-rhev with rbd, got the "Unknown protocol" error.

Version-Release number of selected component (if applicable):
qemu-kvm-rhev-1.5.3-52.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.boot qemu-kvm-rhev with rbd as following cli:
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
2.
3.

Actual results:
After step 1:
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: could not open disk image rbd:10.66.7.1:6789/win8.1-juli.qcow2: Unknown protocol

Expected results:
can boot successfully. Or if can not connect the rbd server, please give some friendly hint.

Additional info:
Also test with gluster server, when can not connect the server, it will print "Gluster connection failed".
# /usr/libexec/qemu-kvm -drive file=gluster://10.66.4.2:24009/gv0/win8.1-juli.raw,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
qemu-kvm: -drive file=gluster://10.66.4.2:24009/gv0/win8.1-juli.raw,if=none,id=img: Gluster connection failed for server=10.66.4.2 port=24009 volume=gv0 image=win8.1-juli.raw transport=tcp

Comment 1 juzhang 2014-03-20 10:52:31 UTC

This bz might block Bug 989608 - [7.0 FEAT] qemu runtime support for librbd backend (ceph)

Comment 2 Kevin Wolf 2014-03-20 10:54:49 UTC

Confirmed, due to bugs in the configure script, the rbd block driver isn't
actually compiled in, even though it was requested on the command line.

Please give this package a try:
http://brewweb.devel.redhat.com/brew/taskinfo?taskID=7230126

Comment 3 Kevin Wolf 2014-03-20 11:16:42 UTC

(In reply to Kevin Wolf from comment #2)
> Please give this package a try:
> http://brewweb.devel.redhat.com/brew/taskinfo?taskID=7230126

Sorry, that was a RHEL build that doesn't contain the rbd driver anyway. This
one is the same code built for RHEV that should work with rbd:

https://brewweb.devel.redhat.com/taskinfo?taskID=7230222

Comment 5 Jun Li 2014-03-21 01:47:57 UTC

(In reply to Kevin Wolf from comment #3)
> (In reply to Kevin Wolf from comment #2)
> > Please give this package a try:
> > http://brewweb.devel.redhat.com/brew/taskinfo?taskID=7230126
> 
> Sorry, that was a RHEL build that doesn't contain the rbd driver anyway. This
> one is the same code built for RHEV that should work with rbd:
> 
> https://brewweb.devel.redhat.com/taskinfo?taskID=7230222
Test with build url:
https://brewweb.devel.redhat.com/taskinfo?taskID=7230222

The following is the results:
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
no monitors specified to connect to.
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: error connecting
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: could not open disk image rbd:10.66.7.1:6789/win8.1-juli.qcow2: Could not open 'rbd:10.66.7.1:6789/win8.1-juli.qcow2': No such file or directory

Comment 6 Jun Li 2014-03-21 02:00:30 UTC

Also test with build url:
http://brewweb.devel.redhat.com/brew/taskinfo?taskID=7230126
---
The result is as followings:
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: could not open disk image rbd:10.66.7.1:6789/win8.1-juli.qcow2: Unknown protocol

Comment 7 juzhang 2014-03-21 02:28:32 UTC

Hi Kevin,

QE both tried qemu-kvm-rhev and qemu-kvm build your provided. Qemu-kvm-rhev and qemu-kvm hit different errors. I think your build fix this issue.

If so, It is possible build the official qemu-kvm-rhev quickly? I guess Intank might need fixed build for verifying Bug 989608 - [7.0 FEAT] qemu runtime support for librbd backend (ceph).

Best Regards,
Junyi

Comment 8 Miroslav Rezanina 2014-03-21 06:39:03 UTC

Fix included in qemu-kvm-1.5.3-56.el7

Comment 9 juzhang 2014-03-21 06:56:25 UTC

(In reply to juzhang from comment #7)
> Hi Kevin,
> 
> QE both tried qemu-kvm-rhev and qemu-kvm build your provided. Qemu-kvm-rhev
> and qemu-kvm hit different errors. I think your build fix this issue.
> 
> If so, It is possible build the official qemu-kvm-rhev quickly? I guess
> Intank might need fixed build for verifying Bug 989608 - [7.0 FEAT] qemu
> runtime support for librbd backend (ceph).
> 
> Best Regards,
> Junyi

Remove needinfo since qemu-kvm-1.5.3-56.el7 comes out with fixed patch.

Best Regards,
Junyi

Comment 10 Jun Li 2014-03-21 09:45:46 UTC

Verify:
test with qemu-kvm-rhev:
qemu-kvm-rhev-1.5.3-56.el7ev.x86_64
---------
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
no monitors specified to connect to.
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: error connecting
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: could not open disk image rbd:10.66.7.1:6789/win8.1-juli.qcow2: Could not open 'rbd:10.66.7.1:6789/win8.1-juli.qcow2': No such file or directory
---------------
test with qemu-kvm:
qemu-kvm-1.5.3-56.el7.x86_64
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: could not open disk image rbd:10.66.7.1:6789/win8.1-juli.qcow2: Unknown protocol
=======================
Before above test, should make sure /usr/lib64/librbd.so.1 is existing in host. 
If not, could got following results:
Also test with qemu-kvm-rhev-1.5.3-56.el7ev.x86_64 without librbd.so.1 .
# /usr/libexec/qemu-kvm -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img -device virtio-blk-pci,drive=img,id=sys-img -monitor stdio
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: error loading librbd: /usr/lib64/qemu/librbd.so.1: cannot open shared object file: No such file or directory
qemu-kvm: -drive file=rbd:10.66.7.1:6789/win8.1-juli.qcow2,if=none,id=img: could not open disk image rbd:10.66.7.1:6789/win8.1-juli.qcow2: Could not open 'rbd:10.66.7.1:6789/win8.1-juli.qcow2': Input/output error
------
Note:
download librbd.so.1 from url: http://ceph.com/rpm-emperor/

Comment 11 juzhang 2014-03-21 09:57:58 UTC

According to comment10, set this issue as verified.

Please note, kvm qe focus on error message promoted since about fully ceph testing is changed by intank.

Best Regards,
Junyi

Comment 12 Ludek Smid 2014-06-13 09:26:02 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.

Comment 13 cristi falcas 2014-07-25 09:23:58 UTC

It seems that with the latest packages this is happening again:


[root@xxxxxx ~(keystone_admin)]$ qemu-img create -f rbd rbd:images/new-libvirt-image 2G
qemu-img: rbd:images/new-libvirt-image: Unknown file format 'rbd'

[root@xxxxxxx ~(keystone_admin)]$ rpm -qa | grep qemu
qemu-kvm-1.5.3-60.el7.x86_64
qemu-img-1.5.3-60.el7.x86_64
ipxe-roms-qemu-20130517-5.gitc4bce43.el7.noarch
qemu-kvm-common-1.5.3-60.el7.x86_64
qemu-kvm-tools-1.5.3-60.el7.x86_64

Comment 14 cristi falcas 2014-07-25 09:26:29 UTC

Also, does anyone know if I can still find anywhere the 1.5.3-56 version?

Comment 15 cristi falcas 2014-07-25 10:34:18 UTC

Sorry, rereading the bug description I can see that the normal packages are not supposed to have rbd included. I recompiled the ev sources locally for this.

Thank you