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                                            strigeus

Support recordsize that's a multiple of 4k but not a power of two.

Not knowing a lot of zfs internals, but I do notice some uses of dn_datablkshift. However it doesn't seem to be that many and perhaps it could be worth 5-10%...

Support recordsize that's a multiple of 4k but not a power of two.

On disk they appear to be stored in multiples of 512 bytes (LSIZE) - or am I missing something there? And also this in dnode_phys: uint16_t dn_datablkszsec; /* data block...

Support recordsize that's a multiple of 4k but not a power of two.

> If you want to store small blocks, use narrower vdevs, so that each disk receive at least 16KB or more. At that point space efficiency is no longer a...

Support recordsize that's a multiple of 4k but not a power of two.

On a 7 disk raidz2, a 120 kB recordsize instead of 128 kB recordsize does not result in a massive increase of 4k writes.

Support recordsize that's a multiple of 4k but not a power of two.

I get that for many workloads, 7% space loss isn't worth code complexity or tuning - especially with compression. But at the same time there exist a lot of other...