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Date:      Tue, 23 Jul 2019 19:53:42 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 224496] mpr and mps drivers seems to have issues with large seagate drives
Message-ID:  <bug-224496-227-o2lyXHVpqu@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-224496-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-224496-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224496

Daniel Shafer <daniel@shafer.cc> changed:

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                 CC|                            |daniel@shafer.cc

--- Comment #10 from Daniel Shafer <daniel@shafer.cc> ---
So I came across this same issue.  It was causing my server to reboot sever=
al
times a day due to kernel panics caused by this issue.  It happens with both
SAS9200 and 9300 controllers.  I have 8 x 10TB Seagate Iron Wolf NAS drives.

I wanted to mention that for me there was a resolution.  I added an Intel
Optane 900p 280GB drive and set that up for cache/l2arc and the problem
entirely disappeared.  My server ran for 20 days before I rebooted it last
night to perform an upgrade.

So, a workaround I believe would be is to add a cache drive to your ZFS poo=
l.

The Intel Optane 900p is a highly recommended cache drive for ZFS pools.

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