You, as a Dell representative, will need to address changes in Firmware or other options for these adapters to the Adaptec representative on site. This patch does NOT impose a performance hit on consumers investing on more than 4G of Memory, what it does is prevent SCSI pass-through calls from /dev/sg, /dev/sd and the management ioctls. Many functions of the management tools do NOT require the SCSI pass-through, as the information FIBs continue to function. I choose drop in functionality instead of a possible performance hit to resolve the missing Firmware Function. If the consumer needs the management functionality or SCSI pass-through then they *may* affect performance by selecting the other driver options; but one needs to sit down and actually measure this to be sure there is a loss in their situation. Sincerely -- Mark Salyzyn > -----Original Message----- > From: Shyam_Iyer@xxxxxxxx [mailto:Shyam_Iyer@xxxxxxxx] > Sent: Friday, November 02, 2007 6:12 AM > To: Salyzyn, Mark; linux-scsi@xxxxxxxxxxxxxxx > Cc: hawk@xxxxxxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx > Subject: RE: [PATCH 1/1] [Bugme-new] [Bug 9133] New: aacraid > driver fails withDell PowerEdge Expandable RAID Controller 3/Di > > >As reported in http://bugzilla.kernel.org/show_bug.cgi?id=9133 it > > was discovered that the PERC line of controllers lacked a key 64 > > bit ScatterGather capable SCSI pass-through function. The adapters > > are still capable of 64 bit ScatterGather I/O commands, but these two can not be mixed. > Can't this be implemented? Now, we are imposing a performance hit on > consumers investing on more that 4G memory. > > -Shyam - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
