[Bug 229167] [Hyper-V] [Jun 19, 2018] Recently FreeBSD VM panics during boot-up, especially with Mellanox VF configured

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229167

--- Comment #20 from pete at twisted.org.uk ---
(In reply to Dexuan Cui from comment #18)

It's ZFS.

I build a UFS machine the way you did, then binary upgrade to 11.2, then source
upgrade to STABLE. All fine. Then I copied the data to another disc, formatted
as a pool, so I have two identical drives, differing only in filesystem.

The UFS derive boots fine, the ZFS one panics when it loads the mlx4en driver
as we have seen before. The filesystem is not corrupt, so theres some odd
interaction somewhere. Kind of worrying!

By the way, I do have real hardware, with real Mellanox cards, which boost fine
from ZFS - but they are only ConnectX-2 cards.

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