Re: [RFC 0/6] vhost/scsi: Add T10 PI SGL passthrough support

2014-02-25 Thread Martin K. Petersen
nab == Nicholas A Bellinger n...@linux-iscsi.org writes: nab Mmm, at least for PI I don't think a residual field is necessary. nab Any time the metadata is not fully read on outgoing WRITEs, or nab written on incoming READs the next hop performing a VERIFY nab operation will end up failing with

Re: [RFC 0/6] vhost/scsi: Add T10 PI SGL passthrough support

2014-02-24 Thread Nicholas A. Bellinger
On Mon, 2014-02-24 at 11:23 +0100, Paolo Bonzini wrote: Il 24/02/2014 06:32, Nicholas A. Bellinger ha scritto: AFAICT up until this point the -prio field has been unused, but I'm certainly open to better ways of signaling (to vhost) that some number of metadata iovs are to be expected..

[RFC 0/6] vhost/scsi: Add T10 PI SGL passthrough support

2014-02-23 Thread Nicholas A. Bellinger
From: Nicholas Bellinger n...@linux-iscsi.org Hi MST, MKP, Paolo Co, The following is an initial RFC series for allowing vhost/scsi to accept T10 protection information (PI) as seperate SGLs along side existing data payload SGLs from within virtio-scsi guest memory. In it's current form, both