Brad Spencer <brad%anduin.eldar.org@localhost> writes: >> I'm now thinking, would it make sense to do the layering the other >> way around, i.e. have cgd on top of a zvol? I wonder if there would >> be any resilience (and possibly performance) advantage to having zfs >> directly access the hard drives (which, being old and bought off >> ebay, I don't quite trust) rather than go through cgd. > > To be honest about it, I don't remember if I tested in that direction. > It would be simple enough to try. You just might have the same problem > with missing IOCTLs that keeps swapping from working. If you put cgd on zvol, then what filesystem are you putting in the cgd? Another zfs pool? ufs2? To me, zfs on cgd makes more sense, because then you actually get zfs, and can have raidz2 or whatever, but all media is encrypted.
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