> -----Original Message----- > From: Ian Jackson [mailto:ian.jack...@eu.citrix.com] > Sent: 02 March 2016 11:41 > To: Bob Liu > Cc: Juergen Gross; xen-devel@lists.xen.org; jbeul...@suse.com; Roger Pau > Monne; Paul Durrant; konrad.w...@oracle.com > Subject: Re: [RFC PATCH] xen-block: introduces extra request to pass- > through SCSI commands > > Bob Liu writes ("Re: [RFC PATCH] xen-block: introduces extra request to > pass-through SCSI commands"): > > Do you know whether pvscsi can work on top of multipath(the device- > mapper framework) or LVMs? > > No, it can't. devmapper and LVM work with the block device > abstraction. >
Google suggests you can use LIO to present an LV as a virtual SCSI LUN, in which case pvscsi should work. Paul > Implicitly you seem to be suggesting that you want to use dm-multipath > and LVM, but also send other SCSI CDBs from the upper layers through > to the underlying SCSI storage target. > > I can't see how that could cause anything but pain. In many cases > "the underlying SCSI storage target" wouldn't be well defined. Even > if it was, these side channel SCSI commands are likely to Go Wrong in > exciting ways. > > What SCSI commands do you want to send ? > > Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
