[Bug 273772] zpool nested in ZVOL becomes inaccessible when zfsd(8) is running on the host

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 14 Sep 2023 18:14:37 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273772

--- Comment #7 from Alan Somers <asomers@FreeBSD.org> ---
Those are the expected file descriptors.  What we don't see is any open zvols. 
And since zfsd doesn't change any in-kernel state, I really don't see any way
that it could interfere with the VM.  Unless you can come up with steps to
reproduce starting from a clean system, I don't think it would be productive to
investigate zfsd any more.

> I tried to access nested zpool from the host after setting
> vfs.zfs.vol.recursive=1 to workaround the issue old way, by performing
> snapshot cleanup, but it seems to be impossible after switching to stable/14.

In what sense does it "seems to be impossible"?  What kind of error do you get
when you try this?

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