Rainer Duffner wrote:

is it possible to increase the size of these images (after creation,
and while the guest OS is running)?

there is no driver-layer signal to tell the guest OS that a drive just got larger, so the guest OS would have to poll, or be told to sense.

with freebsd 10 as the guest OS, i've been able to use growfs to make it expand the the hog (last) file system on a virtual drive. but i did it by shutting down the guest, growing the zvol, booting the guest, and running growfs inside the guest. i havn't tried avoiding the shutdown and reboot.

How large can they be?

if you're using virtio_blk there should be no limit.

I may have a use-case where I would need to have images in the size
oftens of terabytes.

Or is there a way to delegate a ZFS (or a pool) to a bhyve guest?

this is sort of what zvol does, noting, the zfs code runs in the parent.

P Vixie
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