You can add there are SCSI targets out there employing this feature as well. =;^) -----Original Message----- From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi-owner@xxxxxxxxxxxxxxx] On Behalf Of Martin K. Petersen Sent: Monday, December 23, 2013 8:35 AM To: Christoph Hellwig Cc: Jens Axboe; linux-kernel@xxxxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx Subject: Re: status of block-integrity >>>>> "Christoph" == Christoph Hellwig <hch@xxxxxxxxxxxxx> writes: Christoph> We have the block integrity code to support DIF/DIX in the Christoph> the tree for about 5 and a half years, and we still don't Christoph> have a single consumer of it. What do you mean? If you have a DIX-capable HBA (lpfc, qla2xxx, zfcp) then integrity protection is active from the block layer down. The only code that's not currently being exercised are the tag interleaving functions. I was hoping the FS people would use them for back pointers but nobody seemed to bite. Christoph> Given that we'll have a lot of work to do in this area with Christoph> block multiqueue I think it's time to either kill it off for Christoph> good or make sure we can actually use and test it. I don't understand why multiqueue would require a lot of work? It's just an extra scatterlist per request. And obviously, if there's anything that needs to be done in this area I'll be happy to do so... -- Martin K. Petersen Oracle Linux Engineering -- 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 -- 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
