Rushi Srinivas wrote: > Hi Alex, > > Thanks for confirming that SCSI inquiries are supported from both > guest LDom and control Domain on the same physical SCSI disk. > > However, your statement, > "When using VxDMP, you should use the disk as managed by VxDMP > (i.e. /dev/vx/dmp/dsk/...) and not the physical disk itself (/dev/dsk/...)". > > But this statement contradicts (if I understood correctly) the following > statement mentioned in Veritas 5.0 MP3 document, which says, > > "The virtual disk client (VDC) driver controls all virtual disks in the > Guest LDom and not the SCSI driver. Therefore, it is not possible to construct > a SCSI packet and send the packet down through DMP." [ section DMP SCSI > Bypass, > page 22 under Veritas Storage Foundation features restrictions]
That's an old statement because LDoms use to exclusively opens devices exported as virtual disks, and this was preventing other applications to use that device. This is no longer the case and you can use /dev/vx/dmp even if it is exported as a vdisk. > Does this mean that with DMP in guest domain SCSI inquiry should be invoked > on on /dev/dsk/... and not on /dev/vx/dmp/... device? Actually this does not really no matter as you eventually access the same disk (but /dev/vx/dmp/ manages multipathing). alex.
