On Wed, Mar 07, 2007 at 01:50:43PM -0800, Hanks, Dan wrote: > Hi folks, > > > > I've been able to kickstart a number of VMs using the virt-install tool, > and so far have had pretty good success. One aspect of these installs > has me a bit concerned, though. In most cases, anytime the kickstart > needs to do intensive disk activity (such as formatting partitions, or > installing all the rpms) there are noticible hangs, which I'm guessing > come from some kind of IO wait. The result is that a kickstart which > should take < 10 minutes ends up taking a half-hour or so. What kind of virtual disk image are you using for the guest ? A partition or a file - if the latter is it sparse, or non-sparse. Basically sparse files will be horribly slow because every time the host OS has to extend the sparse file to allocate real blocks it needs to do a journal sync on the host FS. This destroys performance of I/O from the guest until the sparse file is fully-allocated. Regards, Dan. -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=| -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen
