[Please keep replies on the list to help others] On Fri, Oct 10, 2014 at 05:01:22PM +0800, Zhi Yong Wu wrote: > On Fri, Oct 10, 2014 at 4:47 PM, Richard W.M. Jones <rjo...@redhat.com> wrote: > > On Fri, Oct 10, 2014 at 04:26:20PM +0800, Zhi Yong Wu wrote: > >> You can't make sure that guest never fail or panic forever, right? > > > > Do you mean the guest or the libguestfs appliance? > > > >> That is, you will have to maintain that guest, not customers' guests. > >> This risk is beyond thought. The maintainance cost will be very > >> expensive in our super large scale cloud environment. > >> > >> We are trying not to start a appliance guest when issuing a libguestfs > >> command, such as virt-resize. > > > > There may be some confusion here. Virt-resize doesn't run the guest. > When i issue virt-resize, i exactly saw one guest is started, indisk > and outdisk are attached to this guest.... > > Do you mean that in the latest upstream, virt-resize doesn't run the guest?
OK so you mean the libguestfs appliance. > > TBH I'm not exactly sure what your concerns are. > > We are afraid that if a guest is started when vrit-xxx command is > issued, it will bring some unexpected risks and take too much time to > complete this command. If you have any concrete problems, then let us know. You may wish to limit the number of virt-resize processes than can run at any one time. GNU 'sem' can do this relatively easily: https://www.gnu.org/software/parallel/sem.html There are various tips on how to manage the appliance discussed in this manual page: http://libguestfs.org/guestfs-performance.1.html Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/ _______________________________________________ Libguestfs mailing list Libguestfs@redhat.com https://www.redhat.com/mailman/listinfo/libguestfs