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Date:      Sun, 29 Apr 2018 15:14:05 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 211713] NVME controller failure: resetting (Samsung SM961 SSD Drives)
Message-ID:  <bug-211713-227-8XlFKj25nN@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-211713-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-211713-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211713

Len White <lwhite@nrw.ca> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lwhite@nrw.ca

--- Comment #61 from Len White <lwhite@nrw.ca> ---
I've recently hit the error nvme0: Missing interrupt on 10.3 and 12.0-curre=
nt.=20
I discovered a workaround that may help lead to a proper fix, though I don't
know for certain if the Missing interrupt is related to resetting controller
message.

If I have nvme_load=3D"YES" and nvd_load=3D"YES" in /boot/loader.conf, I get
missing interrupt every time, the more the device gets used the more of the
messages show up.  Each time that message is shown it seems the read/write
operation fails as the end result is corruption (AND oddly half the time my
intel ix card doesn't work properly when this happens it will spit out ix0:
TX(0) desc avail =3D 34, pidx =3D 87, link status stays no carrier)

If I load nvme/nvd AFTER the system finishes booting, it behaves normally a=
nd
doesn't affect ix.

So it seems loading nvme/nvd early in the boot process causes some kind of
interrupt conflict with other driver(s).

--=20
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