Re: [PATCH 01/23] zfcp: make DIX experimental, disabled, and independent of DIF

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Steffen,

> There are too many unresolved issues with DIX outside of zfcp such as
> wrong protection data on writesame/discard (over device-mapper)

We don't configure protected transfers for anything but read and write
commands. There is currently no protection information generated for
WRITE SAME. So if you guys are seeing failures, it must be due to zfcp
not handling the scsi_cmnd prot_op/prot_flags or the command PROTECT bit
correctly.

> or due to unstable page writes.

BDI_CAP_STABLE_WRITES should take care of this. What's the configuration
that fails?

-- 
Martin K. Petersen	Oracle Linux Engineering



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