[one-users] QEMU Error: could not open disk image

[Jaime Melis]

Hello,

It looks like the problem is the NFS configuration. KVM runs as root
and needs read/write acces to the disk image. It this disk image has
been exported by NFS with the root_squash option (by default) the
local root user of the worker node won't have the permissions it
needs. You might wan't to change your /etc/exports in the frontend (or
NFS server) and configure it with no_root_squash.

Regards,
Jaime

On Wed, Sep 1, 2010 at 3:56 PM, Huang Zhiteng <winston.d at gmail.com> wrote:
> Hi guys,
>
> I encountered a qemu error while using ONE 2.0b.  Does anyone have any idea
> what is wrong?
> "error: internal error process exited while connecting to monitor: qemu:
> could not open disk image /srv/cloud/one/var//16/images/disk.0: Permission
> denied"
>
> My environment is:
> Hardware:
> Intel Xeon 2.93GHz x 2
> 12 GB memory
>
> Software:
> RHEL 6 beta (kernel 2.6.32)
> qemu-kvm-0.12.1.2
>
> SELinux is disabled on all nodes/front-end.  So the root cause shouldn't be
> SELinux.  Below is error log from ONE.
>
> Wed Sep  1 18:46:47 2010 [DiM][I]: New VM state is ACTIVE.
> Wed Sep  1 18:46:50 2010 [LCM][I]: New VM state is PROLOG.
> Wed Sep  1 18:46:50 2010 [VM][I]: Virtual Machine has no context
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh:
> rhel6-nhm:/srv/cloud/one/var/images/9c2fea820bf6ec3793dfb6102e5834d41c4bd481
> n5:/srv/cloud/one/var//16/images/disk.0
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: DST:
> /srv/cloud/one/var//16/images/disk.0
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: Creating directory
> /srv/cloud/one/var//16/images
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: Executed "mkdir -p
> /srv/cloud/one/var//16/images".
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: Executed "chmod a+w
> /srv/cloud/one/var//16/images".
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: Cloning
> /srv/cloud/one/var/images/9c2fea820bf6ec3793dfb6102e5834d41c4bd481
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: Executed "cp
> /srv/cloud/one/var/images/9c2fea820bf6ec3793dfb6102e5834d41c4bd481
> /srv/cloud/one/var//16/images/disk.0".
> Wed Sep  1 18:47:40 2010 [TM][I]: tm_clone.sh: Executed "chmod a+w
> /srv/cloud/one/var//16/images/disk.0".
> Wed Sep  1 18:47:55 2010 [LCM][I]: New VM state is BOOT
> Wed Sep  1 18:47:55 2010 [VMM][I]: Generating deployment file:
> /srv/cloud/one/var/16/deployment.0
> Wed Sep  1 18:47:58 2010 [VMM][I]: Command execution fail: 'mkdir -p
> /srv/cloud/one/var//16/images && cat >
> /srv/cloud/one/var//16/images/deployment.0 && virsh --connect
> qemu+tcp:///system create /srv/cloud/one/var//16/images/deployment.0'
> Wed Sep  1 18:47:58 2010 [VMM][I]: STDERR follows.
> Wed Sep  1 18:47:58 2010 [VMM][I]: error: Failed to create domain from
> /srv/cloud/one/var//16/images/deployment.0
> Wed Sep  1 18:47:58 2010 [VMM][I]: error: internal error process exited
> while connecting to monitor: qemu: could not open disk image
> /srv/cloud/one/var//16/images/disk.0: Permission denied
> Wed Sep  1 18:47:58 2010 [VMM][I]:
> Wed Sep  1 18:47:58 2010 [VMM][I]: ExitCode: 1
> Wed Sep  1 18:47:58 2010 [VMM][E]: Error deploying virtual machine
> Wed Sep  1 18:48:02 2010 [DiM][I]: New VM state is FAILED
> Wed Sep  1 18:48:03 2010 [TM][W]: Ignored: LOG - 16 tm_delete.sh: Deleting
> /srv/cloud/one/var//16/images
>
> Wed Sep  1 18:48:03 2010 [TM][W]: Ignored: LOG - 16 tm_delete.sh: Executed
> "rm -rf /srv/cloud/one/var//16/images".
>
> Wed Sep  1 18:48:03 2010 [TM][W]: Ignored: TRANSFER SUCCESS 16 -
>
>
> --
> Regards
> Huang Zhiteng
>
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