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Date:      Tue, 13 Oct 2015 16:42:33 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 191348] [mps] LSI2308 with WD3000FYYZ drives disappears after hotswapping
Message-ID:  <bug-191348-8-BQgQ9AKbbe@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-191348-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-191348-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D191348

--- Comment #31 from Karli.Sjoberg@slu.se ---
(In reply to Stephen McConnell from comment #30)

OK, yeah we=C2=B4re on the same page. The drive doesn=C2=B4t show up but th=
erein ends the
similarities.

OK, driver timeout is more appropriate but lies at the OS level, as opposed=
 to
setting in HBA or HDD firmware, is what I meant.

There are no simple reproduction steps I can provide because I can=C2=B4t r=
eally
make it happen at will, but it has happened quite frequently as of late. Wh=
at I
can tell you are how the systems are setup.

You start with some hardware, add a HBA of either model 9200, 9201, 9211 or
AOC-USAS2-L8(i|e) flashed with IT FW, connect them through some kind of
expander and add at least 14 drives. That=C2=B4s the least amount of drives=
 where
I=C2=B4ve seen this issue occur. Install latest FreeBSD release and opt for=
 "Auto
ZFS", apply some pressure (preferably external over NFS, iSCSI, SMB or
something) for a few days and then watch the magic happen.

Lots of concurrent IO seems to trigger it more frequently.

/K

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