Re: [Libguestfs] virt-sysprep future

On Sat, Mar 17, 2012 at 06:59:34PM +0800, Wanlong Gao wrote: Not as far as I know. guestmount is fast enough for me. With inspection: $ time sh -c 'guestmount -a /dev/vg_pin/F16x64 -i /tmp/mnt; fusermount -u /tmp/mnt' real 0m9.999s user 0m0.081s sys 0m0.377s Without inspection: $ time sh -c 'guestmount -a /dev/vg_pin/F16x64 -m /dev/vg_f16x64/lv_root /tmp/mnt; fusermount -u /tmp/mnt' real 0m6.681s user 0m0.074s sys 0m0.339s Currently virt-sysprep runs libguestfs twice (once for inspection, once to mount). A virt-sysprep that was rewritten not to be a shell script would only run libguestfs once, so there would be ~10 second overhead. This overhead is insignificant compared to the downsides of using nbd: having to run as root, (in)security, not supporting all guests, creating host device nodes, etc. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top