Aaron Metzger wrote:
virt-install has a checkbox which suggests that you can avoid
preallocating the entire guest image size -- that the guest image file
will grow on demand.
Does this work for Xen or is it only supported for KVM and the QEMU COW
files?
It's a filesystem property:
[root@potoroo ~]# ls -shoog /var/lib/xen/images/*
1.1G -rwxr-xr-x 1 3.1G Nov 7 10:39 /var/lib/xen/images/ClarkConnect.img
2.9G -rwxr-xr-x 1 3.1G Nov 30 18:31 /var/lib/xen/images/DebianEtch.img
4.0G -rwxr-xr-x 1 4.0G Nov 28 17:49 /var/lib/xen/images/F8-1.img
16K -rwxr-xr-x 1 4.0G Nov 28 17:57 /var/lib/xen/images/F8-2.img
16K -rwxr-xr-x 1 4.0G Nov 28 17:38 /var/lib/xen/images/F8.img
16K -rwxr-xr-x 1 4.1G Nov 7 14:06 /var/lib/xen/images/Fedora7.img
16K -rwxr-xr-x 1 2.1G Nov 12 22:55 /var/lib/xen/images/FreeBSD_70.img
129M -rwxr-xr-x 1 4.0G Nov 18 15:51 /var/lib/xen/images/Gentoo.2.img
2.9G -rwxr-xr-x 1 3.1G Nov 18 17:00 /var/lib/xen/images/Gentoo.img
16K -rwxr-xr-x 1 3.1G Nov 5 08:45 /var/lib/xen/images/Kubuntu.img
16K -rwxr-xr-x 1 2.1G Nov 4 10:00 /var/lib/xen/images/NetBSD-31.img
16K -rwxr-xr-x 1 4.0G Nov 28 17:55 /var/lib/xen/images/f8.img
1.1G -rwxr-xr-x 1 2.1G Nov 7 07:52 /var/lib/xen/images/windows_c.img
[root@potoroo ~]#
My experience when creating Xen guests as regular files is that I end up
with a file that is the full size even when I pick the option to not
preallocate the entire image.
To interpret my listing above,
man ls
--
Cheers
John
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