Hi<div><br></div><div>You may try to disable dynamic ownership in qemu.conf, as:</div><div>... <br><div>user = "root"</div><div>group = "root"</div><div><br></div><div>dynamic_ownership = 0</div><div>...</div>
<div><br></div><div>Cheers</div><div><br></div><div>Ruben</div><div class="gmail_quote">On Mon, Sep 26, 2011 at 9:52 PM, Alberto Picón Couselo <span dir="ltr"><<a href="mailto:alpicon1@gmail.com">alpicon1@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi, Fabian.<br>
<br>
We have tested root read and write access to NFS mount in KVM worker node and it works correctly. As you stated, when we create a persistent image, Opennebula creates a link to the registered image in /var/lib/{VID}/image. We are using FreeNAS 8.0 Final Release for shared storage and it implements NFSv3.<br>
<br>
When a new instance is deployed using a persistent image, the image changes a quarter of a second to libvirt-bin:kvm file permissions, instance fails to boot with "permission denied" error and persistent image in repository changes its file permissions to root user and root group.<br>
<br>
When we use a non persistent image, KVM instance boots correctly cloning the registered image to /var/lib/{VID}/image/disk.0, and it has libvirt-bin:kvm file permissions during RUNNING state.<br>
<br>
Please, any clue regarding this issue would be really appreciated.<br>
<br>
Best Regards,<br>
Alberto Picón<br>
<br>
El 26/09/2011 13:50, Fabian Wenk escribió:<div><div></div><div class="h5"><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello Alberto<br>
<br>
On <a href="tel:25.09.2011%2000" value="+12509201100" target="_blank">25.09.2011 00</a>:27, Alberto Picón Couselo wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
We have some a problems using persistent KVM images in Opennebula 3.0 RC1.<br>
<br>
Our configuration is as follows:<br>
<br>
Opennebula Front-End Ubuntu LTS 10.04<br>
KVM worker node Debian Queeze 6.0.2<br>
NAS for NFS Shared storage<br>
</blockquote>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Sat Sep 24 23:49:08 2011 [VMM][I]: Command execution fail: 'if [ -x<br>
"/var/lib/one/remotes/vmm/kvm/<u></u>deploy" ]; then<br>
/var/lib/one/remotes/vmm/kvm/<u></u>deploy /var/lib/one/212/images/<u></u>deployment.0<br>
tc-kvm-hv02 212 tc-kvm-hv02; else exit 42; fi'<br>
Sat Sep 24 23:49:08 2011 [VMM][I]: error: Failed to create domain from<br>
/var/lib/one/212/images/<u></u>deployment.0<br>
Sat Sep 24 23:49:08 2011 [VMM][I]: error: internal error process exited<br>
while connecting to monitor: qemu: could not open disk image<br>
/var/lib/one/212/images/disk.<u></u>0: Permission denied<br>
</blockquote>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Please, can you give us any clue regarding this issue?. Persistent mode<br>
for KVM VMs is essential for us...<br>
</blockquote>
<br>
Is root allowed to read/write in the NFS mounted images folder? Check the options in /etc/exports on the NFS server.<br>
Eventually you also need to force the client (cluster node) to mount it using NFSv3 (instead of NFSv4).<br>
<br>
With persistent images, the images stays in the images folder and is only linked from the <vm_id>/images/ folder. KVM does run with root privileges.<br>
<br>
<br>
bye<br>
Fabian<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br>Dr. Ruben Santiago Montero<br>Associate Professor (Profesor Titular), Complutense University of Madrid<br><br>URL: <a href="http://dsa-research.org/doku.php?id=people:ruben" target="_blank">http://dsa-research.org/doku.php?id=people:ruben</a><br>
Weblog: <a href="http://blog.dsa-research.org/?author=7" target="_blank">http://blog.dsa-research.org/?author=7</a><br>
</div>