[Qemu-devel] iSCSI support for QEMU, update

[Ronnie Sahlberg]

This is a patch that adds support for iSCSI to QEMU when QEMU is built against 
libiscsi (https://github.com/sahlberg/libiscsi)

ISCSI devices are specified using a special iSCSI URL:
  -drive file=iscsi://10.1.1.1:3260/iqn.ronnie.test/1


This allows a guest to access iscsi devices without exposing these devices to 
the host. Which is nice if/when you have a very large number of LUNs that are 
dedicated for virtual guests.


This patch is updated to set FUA for all writes, unless any of the NOCACHE or 
CACHE_WB flags are set for the device.


Please review and/or apply.



regards
ronnie sahlberg