libvirt users - Jun 2010 - Virsh blkstat doesn't work on Xen HVM

Hi 

 

I tried to use virsh blkstat to get information of a block, but it returns an
error message as shown below

This function works fine in KVM, but fail in XEN.

I tried XEN 3.4.3 ,4.0.0 and 4.0.1 with libvirt 0.7.1 from fedora yum server and
0.8.1 from libvirt .

All of them are fail to get the block status.

The following is the config file and error message of virsh domblkstat.

Any one knows how to make this function work?

 

[root at localhost ~]# virsh dumpxml vm1

<domain type='xen' id='1'>

  <name>vm1</name>

  <uuid>12af1ed4-2f2d-f02d-9a2a-5d4f377889d5</uuid>

  <memory>524288</memory>

  <currentMemory>524288</currentMemory>

  <vcpu>1</vcpu>

  <os>

    <type>hvm</type>

    <loader>/usr/lib/xen/boot/hvmloader</loader>

    <boot dev='hd'/>

  </os>

  <features>

    <acpi/>

    <apic/>

    <pae/>

  </features>

  <clock offset='utc'/>

  <on_poweroff>destroy</on_poweroff>

  <on_reboot>restart</on_reboot>

  <on_crash>restart</on_crash>

  <devices>

    <emulator>/usr/lib64/xen/bin/qemu-dm</emulator>

    <disk type='file' device='disk'>

      <driver name='file'/>

      <source file='/var/lib/libvirt/images/vm1.img'/>

      <target dev='hda' bus='ide'/>

    </disk>

    <disk type='file' device='cdrom'>

      <target dev='hdc' bus='ide'/>

      <readonly/>

    </disk>

    <interface type='bridge'>

      <mac address='00:16:36:0f:fb:7a'/>

      <source bridge='eth0'/>

      <script path='/etc/xen/scripts/vif-bridge'/>

      <target dev='vif1.0'/>

    </interface>

    <serial type='pty'>

      <source path='/dev/pts/0'/>

      <target port='0'/>

    </serial>

    <console type='pty' tty='/dev/pts/0'>

      <source path='/dev/pts/0'/>

      <target port='0'/>

    </console>

    <input type='mouse' bus='ps2'/>

    <graphics type='vnc' port='5900' autoport='yes'
keymap='en-us'/>

    <sound model='es1370'/>

  </devices>

</domain>

 

[root at localhost ~]# virsh domblkstat vm1 hda

error: Failed to get block stats vm1 hda

error: internal error read_bd_stats: Failed to read any block statistics

 

TREND MICRO EMAIL NOTICE
The information contained in this email and any attachments is confidential and
may be subject to copyright or other intellectual property protection. If you
are not the intended recipient, you are not authorized to use or disclose this
information, and we request that you notify us by reply mail or telephone and
delete the original message from your mail system.

TREND MICRO EMAIL NOTICE
The information contained in this email and any attachments is confidential and
may be subject to copyright or other intellectual property protection. If you
are not the intended recipient, you are not authorized to use or disclose this
information, and we request that you notify us by reply mail or telephone and
delete the original message from your mail system.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20100603/31118c6e/attachment.htm>

Hi

I tried to use virsh blkstat to get information of a block, but it
returns an error message as shown below
This function works fine in KVM, but fail in XEN.
I tried XEN 3.4.3 ,4.0.0 and 4.0.1 with libvirt 0.7.1 from fedora yum
server and 0.8.1 from libvirt .
All of them are fail to get the block status.
The following is the config file and error message of virsh domblkstat.
Any one knows how to make this function work?

[root at localhost ~]# virsh dumpxml vm1
<domain type='xen' id='1'>
? <name>vm1</name>
? <uuid>12af1ed4-2f2d-f02d-9a2a-5d4f377889d5</uuid>
? <memory>524288</memory>
? <currentMemory>524288</currentMemory>
? <vcpu>1</vcpu>
? <os>
??? <type>hvm</type>
??? <loader>/usr/lib/xen/boot/hvmloader</loader>
??? <boot dev='hd'/>
? </os>
? <features>
??? <acpi/>
??? <apic/>
??? <pae/>
? </features>
? <clock offset='utc'/>
? <on_poweroff>destroy</on_poweroff>
? <on_reboot>restart</on_reboot>
? <on_crash>restart</on_crash>
? <devices>
??? <emulator>/usr/lib64/xen/bin/qemu-dm</emulator>
??? <disk type='file' device='disk'>
????? <driver name='file'/>
????? <source file='/var/lib/libvirt/images/vm1.img'/>
????? <target dev='hda' bus='ide'/>
??? </disk>
??? <disk type='file' device='cdrom'>
????? <target dev='hdc' bus='ide'/>
????? <readonly/>
??? </disk>
??? <interface type='bridge'>
????? <mac address='00:16:36:0f:fb:7a'/>
????? <source bridge='eth0'/>
????? <script path='/etc/xen/scripts/vif-bridge'/>
????? <target dev='vif1.0'/>
??? </interface>
??? <serial type='pty'>
????? <source path='/dev/pts/0'/>
????? <target port='0'/>
??? </serial>
??? <console type='pty' tty='/dev/pts/0'>
????? <source path='/dev/pts/0'/>
????? <target port='0'/>
??? </console>
??? <input type='mouse' bus='ps2'/>
??? <graphics type='vnc' port='5900' autoport='yes'
keymap='en-us'/>
??? <sound model='es1370'/>
? </devices>
</domain>

[root at localhost ~]# virsh domblkstat vm1 hda
error: Failed to get block stats vm1 hda
error: internal error read_bd_stats: Failed to read any block statistics