On Fri, Jul 19, 2013 at 08:32:28AM -0400, John Ferlan wrote:
There are two ways to use a iSCSI LUN as disk source for qemu.
* The LUN's path as it shows up on host, e.g. /dev/disk/by-path/ip-$ip:3260-iscsi-$iqn-fc18:iscsi.iscsi0-lun-1
* The libiscsi URI from the storage pool source element host attribute, e.g. iscsi://demo.org:6000/iqn.1992-01.com.example/1
For a "volume" type disk, if the specified "pool" is of iscsi type, we should support to use the LUN in either of above 2 ways. That's why to introduce a new XML tag "mode" for the disk source (libvirt should support iscsi pool with libiscsi, but it's another new feature, which should be done later).
The "mode" can be either of "host" or "direct". Use "host" to indicate use of the LUN with the path as it shows up on host. Use "direct" to indicate to use it with the source pool host URI (future patches may support to use network type libvirt storage too, e.g. Ceph) --- docs/formatdomain.html.in | 11 ++++- docs/schemas/domaincommon.rng | 8 ++++ src/conf/domain_conf.c | 22 +++++++++- src/conf/domain_conf.h | 22 ++++++++++ .../qemuxml2argv-disk-source-pool-mode.xml | 48 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 6 files changed, 110 insertions(+), 2 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-source-pool-mode.xml
ACK Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|