I wouldn't go so far as to say putting a vm in a file on a networked filesystem
is wrong. It is just not the best choice if you have a ceph cluster at hand,
in my opinion. Networked filesystems have a bunch of extra stuff to implement
posix semantics and live in kernel space. You just need
Hello Michael,
Thanks for the reply. It seems like ceph isn't actually mounting the rbd
to the vm host which is where I think I was getting hung up (I had
previously been attempting to mount rbds directly to multiple hosts and as
you can imagine having issues).
Could you possible expound on why
Hello,
I would like to live migrate a VM between two hypervisors. Is it
possible to do this with a rbd disk or should the vm disks be created as
qcow images on a CephFS/NFS share (is it possible to do clvm over rbds? OR
GlusterFS over rbds?)and point kvm at the network directory. As I
I live migrate all the time using the rbd driver in qemu, no problems. Qemu
will issue a flush as part of the migration so everything is consistent. It's
the right way to use ceph to back vm's. I would strongly recommend against a
network file system approach. You may want to look into
