[Bug 243692] file-backed VMs virtioblock report dev blocksize == underlying ZFS recordsize

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243692

Allan Jude <allanjude at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |allanjude at FreeBSD.org

--- Comment #2 from Allan Jude <allanjude at FreeBSD.org> ---
(In reply to James Blachly from comment #1)
When you are configuring the bhyve, when you create the virtio-blk device, it
can take an optional parameter: sectorsize=logical[/physical]

So you can force the block size exposed to be smaller than that reported by ZFS

Possibly, you might want to set the zfs record size to be smaller, since you
likely don't want that degree of write amplification in your file-backed VM
images anyway.

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