Benjamin, > please set me and Steffen on CC next time for zfcp. Sure. > Out of curiosity, do you have any idea whether there is any storage > that offers DIF with a different Logical Block Size than 512 (I > haven't see any, although, that doesn't say much)? Just re-read some > parts of our HBA specs and we probably would be in trouble, if it > does, with how we do things here. I have a few that are 4Kn+8. It wouldn't say these are very common, the 16-bit CRC isn't that great with 4K blocks. To address the block size issue we defined a couple of new protection formats in NVMe. These allow for 32 and 64-bit CRCs, larger reference tags, etc. However, these enhancements have yet to percolate down into SCSI/SBC. -- Martin K. Petersen Oracle Linux Engineering
