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<p>Hi, after a last yum update, udev assigned incorrect /dev/dm-*
ownership for ovirt storage. The default storage is owned by
"root.disk" instead of "vdsm.qemu". The vdsm udev cfg file is
unchanged.<br>
</p>
<br>
<br>
Package udev.x86_64 0:147-2.73.el6 WORKS<br>
<br>
Package udev.x86_64 0:147-2.73.el6_8.1 DOESN'T <br>
<br>
Looks like a behavior change in udev -
<a class="moz-txt-link-freetext" href="https://rhn.redhat.com/errata/RHBA-2016-1659.html">https://rhn.redhat.com/errata/RHBA-2016-1659.html</a><br>
<br>
This update fixes the following bug:<br>
<br>
* Previously, the udev daemon reset permissions on a device node on
both<br>
"change" and "add" kernel sysfs events. After a "change" event was
generated for<br>
an underlying block device, permissions on a virtual disk of a
virtual machine<br>
(VM) were reset. Consequently, a qemu process accessing the virtual
disk<br>
encountered a "Permission denied" error, which caused problems
during live<br>
migrations of VMs. The udev service has been patched, and it now
sets<br>
permissions on a device node only on "add" events or in cases when
udev created<br>
a new device node. The behavior of the udev service is now similar
to Red Hat<br>
Enterprise Linux 7. (BZ#1362038)<br>
<br>
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