Re: [PATCH v2 10/11] qemu: Make memory path generation embed driver aware

So far, libvirt generates the following path for memory: $memoryBackingDir/$id-$shortName/ram-nodeN where $memoryBackingDir is the path where QEMU mmaps() memory for the guest (e.g. /var/lib/libvirt/qemu/ram), $id is domain ID and $shortName is shortened version of domain name. So for instance, the generated path may look something like this: /var/lib/libvirt/qemu/ram/1-QEMUGuest/ram-node0 While in case of embed driver the following path would be generated by default: $root/lib/qemu/ram/1-QEMUGuest/ram-node0 which is not clashing with other embed drivers, we allow users to override the default and have all embed drivers use the same prefix. This can create clashing paths. Fortunately, we can reuse the approach for machined name generation (v6.1.0-178-gc9bd08ee35) and include part of hash of the root in the generated path. Note, the important change is in qemuGetMemoryBackingBasePath(). The rest is needed to pass driver around. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; Reviewed-by: Daniel Henrique Barboza <danielhb413(a)gmail.com&gt; --- src/qemu/qemu_command.c | 15 +++++++-------- src/qemu/qemu_conf.c | 21 ++++++++++++++------- src/qemu/qemu_conf.h | 8 ++++---- src/qemu/qemu_process.c | 5 ++--- 4 files changed, 27 insertions(+), 22 deletions(-)