[Users] Permission denied on disk image file !!

Anil Dhingra anildhingra25 at gmail.com
Tue Oct 15 15:05:50 UTC 2013


Hi Guys


Any know issue why we are not able to start VM due to permission issue on
disk image file .. as per docs ownership should be vdsm:kvm  byt not sure
why its showing below

used - both  ovirt-node-iso-3.0.1-1.0.1.vdsm.el6 &
ovirt-node-iso-3.0.1-1.0.2.vdsm.el6  same issue  [ using NFS Domain ]


VM n0001vdap is down. Exit message: internal error process exited while
connecting to monitor: qemu-kvm: -drive
file=/rhev/data-center/d09d8a3e-8ab4-42fc-84ec-86f307d144a0/1a04e13a-0ed4-40d6-a153-f7091c65d916/images/44e3fc9b-0382-4c11-b00c-35bd74032e9a/34542412-ed50-4350-8867-0d7d5f8127fd,if=none,id=drive-virtio-disk0,format=raw,serial=44e3fc9b-0382-4c11-b00c-35bd74032e9a,cache=none,werror=stop,rerror=stop,aio=threads:
*could not open *disk image */rhev/data-center*
/d09d8a3e-8ab4-42fc-84ec-86f307d144a0/1a04e13a-0ed4-40d6-a153-f7091c65d916/*
images*/44e3fc9b-0382-4c11-b00c-35bd74032e9a/34542412-ed50-4350-8867-0d7d5f8127fd:
*Permission denied*

[root at node1 44e3fc9b-0382-4c11-b00c-35bd74032e9a]# ls -lh
total 1.1M
-rw-rw----+ 1 *vdsm 96* 6.0G 2013-10-15 05:47
34542412-ed50-4350-8867-0d7d5f8127fd
-rw-rw----+ 1 *vdsm 96* 1.0M 2013-10-15 05:47
34542412-ed50-4350-8867-0d7d5f8127fd.lease
-rw-rw-rw-+ 1 *vdsm 96*  268 2013-10-15 05:47
34542412-ed50-4350-8867-0d7d5f8127fd.meta

As it doesn't allow us o change permissions any alternate way for this ?or
do I need to manually set permissions in *"/etc/libvirt/qemu.conf"*
alos ther is no such *group *with* "96"* .. so from where it picks this
config .

Another question is related to SELINUX config change for below 2 parameters
to recover from error "*internal error Failed to open socket to sanlock
daemon: Permission denied*" I saw some where this is fixed but not sure why
it appears  VDSM should take care of this auto

setsebool -P virt_use_sanlock=on
setsebool -P virt_use_nfs=on
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