[Bug 241980] panic: I/O to pool appears to be hung on vdev

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241980

--- Comment #25 from Andriy Gapon <avg at FreeBSD.org> ---
(In reply to Eugene Grosbein from comment #23)
So, I am not sure what this tells us.
An I/O request taking tens of minutes does not look normal to me, even if it's
a TRIM request.
Maybe disable the deadman logic, maybe disable ZFS TRIM.
Or maybe there is something special about the SSDs or something that can be
tuned.
But this does not look like a problem with "core" ZFS.

I think that Warner Losh looked deeply into the SSD/TRIM situation, maybe he
can give some additional ideas.

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