Hi Paul & all,
I found your other mail more convincing,
the permission change might be just a side effect...
a) we think in 3.4.0 it was working, and we didn't changed the libvirt/qemu version
(later in the day I will roll back to gluster from raring (13.04) repo and try to reproduce, just to be sure)
b) If it would be just a libvirt issue, why is the file not accesible even for root on the host OS?
root@pong[/3]:~ # file /srv/vms/mnt_atom01/atom01.img
/srv/vms/mnt_atom01/atom01.img: writable, regular file, no read permission
while it is readable on the brick
root@pong[/3]:~ # file /ecopool/fs_atom01/atom01.img
/ecopool/fs_atom01/atom01.img: x86 boot sector; partition 1: ID=0x83, starthead 1, startsector 63, 16777165 sectors; partition 2: ID=0xf, starthead 254, startsector 16777228, 1677718 sectors, code offset 0x63
in this case host "pong" is the receiving side of the migration,
on host "ping", the file stays readable
root@ping[/1]:~ # file /srv/vms/mnt_atom01/atom01.img
/srv/vms/mnt_atom01/atom01.img: x86 boot sector; partition 1: ID=0x83, starthead 1, startsector 63, 16777165 sectors; partition 2: ID=0xf, starthead 254, startsector 16777228, 1677718 sectors, code offset 0x63
Regards
Bernhard
Hi everyone,
On the libvirt Wiki, I found the text below which might well apply to
our live-migration issue:
"The directory used for storing disk images has to be mounted from
shared storage on both hosts. Otherwise, the domain may lose access to
its disk images during migration because source libvirtd may change the
owner, permissions, and SELinux labels on the disk images once it
successfully migrates the domain to its destination. Libvirt avoids
doing such things if it detects that the disk images are mounted from a
shared storage. "
So perhaps libvirtd fails to recognize that it is on shared storage, and
it is the originating libvirt that throws a wrench in the wheels by
changing the ownership?
http://wiki.libvirt.org/page/Migration_fails_because_disk_image_cannot_be_found
Regards, Paul Boven.
--
Paul Boven <boven@xxxxxxx> +31 (0)521-596547
Unix/Linux/Networking specialist
Joint Institute for VLBI in Europe - www.jive.nl
VLBI - It's a fringe science
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