Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI

[Stefan Hajnoczi]

On Wed, Sep 21, 2011 at 07:37:55PM +1000, Ronnie Sahlberg wrote:
> This provides built-in support for iSCSI to QEMU.
> This has the advantage that the iSCSI devices need not be made visible to the 
> host, which is useful if you have very many virtual machines and very many 
> iscsi devices.
> It also has the benefit that non-root users of QEMU can access iSCSI devices 
> across the network without requiring root privilege on the host.
> 
> This driver interfaces with the multiplatform posix library for iscsi 
> initiator/client access to iscsi devices hosted at
>     git://github.com/sahlberg/libiscsi.git
> 
> The patch adds the driver to interface with the iscsi library.
> It also updated the configure script to
> * by default, probe is libiscsi is available and if so, build
>   qemu against libiscsi.
> * --enable-libiscsi
>   Force a build against libiscsi. If libiscsi is not available
>   the build will fail.
> * --disable-libiscsi
>   Do not link against libiscsi, even if it is available.
> 
> When linked with libiscsi, qemu gains support to access iscsi resources such 
> as disks and cdrom directly, without having to make the devices visible to 
> the host.
> 
> You can specify devices using a iscsi url of the form :
> iscsi://[<username>[:<password>@]]<host>[:<port]/<target-iqn-name>/<lun>
> When using authentication, the password can optionally be set with
> LIBISCSI_CHAP_PASSWORD="password" to avoid it showing up in the process list
> 
> Signed-off-by: Ronnie Sahlberg <address@hidden>
> ---
>  Makefile.objs |    1 +
>  block/iscsi.c |  596 
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  configure     |   31 +++
>  trace-events  |    7 +
>  4 files changed, 635 insertions(+), 0 deletions(-)
>  create mode 100644 block/iscsi.c

Reviewed-by: Stefan Hajnoczi <address@hidden>