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

[ronnie sahlberg]

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On Thu, Sep 29, 2011 at 4:54 PM, Stefan Hajnoczi
<address@hidden> wrote:
> 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>
>