Messages in this thread | | | Subject | Re: status of block-integrity | From | "Martin K. Petersen" <> | Date | Mon, 23 Dec 2013 08:35:22 -0500 |
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>>>>> "Christoph" == Christoph Hellwig <hch@infradead.org> 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
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