| Summary: | Sub-element of driver "queues , cmd_per_lun, max_sectors " for controller cannot be set at the same time | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Pei Zhang <pzhang> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.1 | CC: | dyuan, lhuang, mprivozn, mzhan, rbalakri, xuzhang |
| Target Milestone: | rc | Keywords: | Upstream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-1.2.13-1.el7 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-11-19 06:07:10 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: | |
I've just pushed the patch upstream:
commit 97fac17c77d9bdfacafff1c5c39b2df3c1530614
Author: Luyao Huang <lhuang>
AuthorDate: Wed Jan 7 18:39:37 2015 +0800
Commit: Michal Privoznik <mprivozn>
CommitDate: Fri Jan 9 16:01:55 2015 +0100
conf: Correctly format controller's driver
https://bugzilla.redhat.com/show_bug.cgi?id=1179684
The way that we currently generate the <driver/> for <controller/> is
just madness:
<controller type='scsi' index='0' model='virtio-scsi'>
<driver queues='12'/>
<driver cmd_per_lun='123'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
It's obvious that we should be aiming at the following:
<controller type='scsi' index='0' model='virtio-scsi'>
<driver queues='12' cmd_per_lun='123'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
Signed-off-by: Luyao Huang <lhuang>
v1.2.11-123-g97fac17
Verified as below:
[root@localhost ~]# rpm -q libvirt
libvirt-1.2.15-1.el7.x86_64
1. For a wrong/invalid multi-drvier line controller XML, add below device to domain, then save the XML
[root@localhost ~]# cat scsi.xml
<controller type='scsi' index='1' model='virtio-scsi'>
<driver max_sectors='512'/>
<driver queues='3'/>
<driver cmd_per_lun='10'/>
</controller>
a. When meeting the error prompt, press "n", the <driver> is <optional> type, no <zeroOrMore> type
[root@localhost ~]# virsh edit r71
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content
Failed. Try again? [y,n,i,f,?]: <==== press "n"
b. When meeting the error prompt, press "i", due to virDomainControllerDefParseXML just save the elements of last <driver>, the virDomainControllerDefFormat will format the saved elements.
[root@localhost ~]# virsh edit r71
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content
Failed. Try again? [y,n,i,f,?]: <==== press "i"
Domain r71 XML configuration edited.
[root@localhost ~]# virsh dumpxml r71 | grep "scsi" -A4
<controller type='scsi' index='1' model='virtio-scsi'>
<driver cmd_per_lun='10'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</controller>
<controller type='usb' index='0' model='ich9-ehci1'>
2. Using a vaild controller XML with single dirver line
[root@localhost ~]# cat scsi1.xml
<controller type='scsi' index='1' model='virtio-scsi'>
<driver queues='3' cmd_per_lun='10' max_sectors='512'/>
</controller>
[root@localhost ~]#
[root@localhost ~]# virsh edit r71
Domain r71 XML configuration edited.
[root@localhost ~]# virsh dumpxml r71 | grep "scsi" -A4
<controller type='scsi' index='1' model='virtio-scsi'>
<driver queues='3' cmd_per_lun='10' max_sectors='512'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</controller>
<controller type='usb' index='0' model='ich9-ehci1'>
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://rhn.redhat.com/errata/RHBA-2015-2202.html |
description of problem: Optional sub-element driver of the scsi controller cannot be set at the same time ,libvirt just save the last one and remove others. Version-Release number of selected component (if applicable): libvirt-1.2.8-11.el7.x86_64 qemu-kvm-rhev-2.1.2-17.el7.x86_64 kernel-3.10.0-217.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.edit domain XML like following : <controller type='scsi' index='1' model='virtio-scsi'> <driver max_sectors='512'/> <driver cmd_per_lun='10'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> 2.start domain . check domain XML. element max_sectors was removed. # virsh start r717 Domain r717 started # virsh dumpxml r717 | grep scsi -A 8 <controller type='scsi' index='1' model='virtio-scsi'> <driver cmd_per_lun='10'/> <=====just cmd_per_lun ,max_sectors was removed. <alias name='scsi1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> 3.set three emlements at the same time .start the guest . <controller type='scsi' index='1' model='virtio-scsi'> <driver queues='3' cmd_per_lun='10' max_sectors='512'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> 3.1 Dumpxml it has three elements. # virsh dumpxml r717 | grep scsi -A 8 <controller type='scsi' index='1' model='virtio-scsi'> <driver queues='3'/> <driver cmd_per_lun='10'/> <driver max_sectors='512'/> <alias name='scsi1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> 3.2 Using virsh edit or dumpxml --inactive to check ,the last one was saved and others were removed. #virsh edit r717 #virsh dumpxml r717 --inactive | grep scsi -A 8 <controller type='scsi' index='1' model='virtio-scsi'> <driver max_sectors='512'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </controller> Actual results: As step2 and step 3.2 , those three sub-element cannot be set at the same time . Expected results: Those three sub-element can be set at the same time .