Hi, Javier.
I have double checked, that the root has access to both disk.0 and to
the base image from the hosting node. It is apparently not a problem.
What could be the difference between the qcow2 images booting and the
raw images booting from the access rights perspective? The raw images
are starting fine.
Best,
Alex
-------- Original Message --------
Subject: Re: [one-users] Problems with qcow2 images
Date: Wed, 26 Jan 2011 15:41:51 +0100
From: Alexander Fedulov <[email protected]>
To: [email protected]
I have modified the nfs exports on my ON manager host by adding
no_root_squash:
/srv/cloud 192.168.144.21(rw,no_root_squash)
/srv/cloud 192.168.144.22(rw,no_root_squash)
- no changes, the same error:
qemu: could not open disk image
/srv/cloud/one/var//41/images/disk.0: Permission denied
Permissions of the disk.0 before the failure seem to be fine:
-rw-rw-rw- 1 oneadmin cloud 262144 2011-01-26 15:29 disk.0
During the deployment, before disk.0 was erased, I was able to access
the disk image from the executing host as root.
root@brandy:/var/log/libvirt/qemu# qemu-img info
/srv/cloud/one/var/41/images/disk.0
image: /srv/cloud/one/var/41/images/disk.0
file format: qcow2
...
I am really stuck and hope for your help. Many thanks in advance.
Yours sincerely,
Alexander
On 24.01.2011 15:00, Alexander Fedulov wrote:
Here are permissions for the image and for the base image:
-rw-r--r-- 1 oneadmin cloud 262144 2011-01-20 19:23 qcow.img
-rw-r--r-- 1 oneadmin cloud 2147483648 2010-11-19 12:22 ubuntu10-04.img
...and for the folders (/srv/cloud/temp and up):
drwxr-xr-x 3 oneadmin cloud 4096 2011-01-24 14:32 .
drwxr-xr-x 12 oneadmin cloud 4096 2011-01-18 12:01 ..
These are the permissions for disk.0 before it is deleted due to failure:
-rw-rw-rw- 1 oneadmin cloud 262144 2011-01-24 14:45 disk.0
Any thoughts?
On 24.01.2011 12:10, Javier Fontan wrote:
Is /srv/cloud/temp/ubuntu10-04/qcow.img readable by root? It needs to
be readable by root in the execution node. Also check the permissions
in for the directories where it is stored.
tm_clone.sh should have changed permissions for
"/srv/cloud/one/var//24/images/disk.0" check if that is correct. root
is the user that is accessing these files but with NFS sharing you
have to give the permissions for all or add no_root_squash to the
exporting parameters.
On Thu, Jan 20, 2011 at 8:17 PM, Alexander Fedulov
<[email protected]> wrote:
I created a qcow2 image from a raw image like this:
qemu-img create -f qcow2 -b ubuntu10-04.img qcow.img
The DISC section of of my deployment descriptor looks like this:
DISK = [
source = "/srv/cloud/temp/ubuntu10-04/qcow.img",
target = "sda",
readonly = "no" ,
DRIVER = qcow2]
I have edited the ~/lib/tm_commands/nfs/th_clone.sh file according
to this
https://support.opennebula.pro/entries/348847-using-qcow-images
without the
SSH part:
*)
log "Cloning $SRC_PATH"
exec_and_log "qemu-img create -f qcow2 -o backing_file=$SRC_PATH
$DST_PATH"
;;
esac
Unfortunately deployment fails and this is what I find in the one-*.log
files in the /var/log/libvirt/qemu folder of a target host.
LC_ALL=C
PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 768
-smp 1
-name one-24 -uuid 9f3d9ed7-d17f-e6d1-d997-5fed5a84aa47 -chardev
socket,id=monitor,path=/var/lib/libvirt/qemu/one-24.monitor,server,nowait
-monitor chardev:monitor -no-acpi -boot c -drive
file=/srv/cloud/one/var//24/images/disk.0,if=scsi,index=0,boot=on,format=qcow2
-drive
file=/srv/cloud/one/var//24/images/disk.1,if=scsi,media=cdrom,index=2,format=raw
-net nic,macaddr=02:00:c0:a8:90:22,vlan=0,name=nic.0 -net
tap,fd=54,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc
0.0.0.0:20
-k de -vga cirrus
qemu: could not open disk image /srv/cloud/one/var//24/images/disk.0:
Permission denied
Deployment of raw images works fine. The version of ON is 2.0.1.
I was wondering, whether there is some chmod operation that has to
be added
to the tm_clone.sh script or is the problem in something else?
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