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Date:      Wed, 01 Aug 2018 21:48:35 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 229745] ahcich: CAM status: Command timeout
Message-ID:  <bug-229745-227-0EpHtu89MQ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-229745-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-229745-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229745

--- Comment #6 from Alexey <fbsd98816551@avksrv.org> ---
(In reply to Alexey from comment #5)
But problem is, if we check spec for HGST HUS722T1TALA604 drive, 
https://www.hgst.com/sites/default/files/resources/Ultrastar-7K2-EN-US-DS.pdf I
do not see the drive is "Shingled magnetic recording".. (1TB is not so big
capacity for 3.5", this  not need any extra methods)

And, if we replace (one by one all four disks in zpool) from HGST
HUS722T1TALA604 to something different, to TOSHIBA DT01ACA100 or to TOSHIBA
MG03ACA100 in our case, it solve the problem w/o disabling flush cache
(vfs.zfs.cache_flush_disable=0)

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