[Pkg-xen-devel] Bug#503044: xen-utils-common: should make the loopback device default to supporting more nodes

Russell Coker russell at coker.com.au
Wed Oct 22 02:54:37 UTC 2008


Package: xen-utils-common
Version: 3.2.0-2
Severity: normal

When file: sources are used for Xen block devices the Xen system will
use a loopback device for each one.  It's quite common for DomUs to be
configured with two block devices (one for storage and one for swap) and
not uncommon to have a block device for each filesystem (which makes it
easier to grow filesystems).

Therefore the default of 8 loopback devices will allow an absolute
maximum of 8 DomUs with file: block devices, 4 DomUs that have separate
block devices for swap and storage, and 2 or less if each DomU has more
devices.

It seems reasonable to create a file /etc/modprobe.d/xen that contains
the following line to alleviate this:
options loop max_loop=32





More information about the Pkg-xen-devel mailing list