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Date:      Fri, 13 Apr 2007 20:13:02 +0200
From:      des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=)
To:        freebsd-current@FreeBSD.ORG
Cc:        freebsd-fs@FreeBSD.ORG, zfs-discuss@opensolaris.org, pjd@FreeBSD.ORG
Subject:   Re: ZFS committed to the FreeBSD base.
Message-ID:  <86veg0kus1.fsf@dwp.des.no>
In-Reply-To: <200704131520.l3DFKSLs041554@lurza.secnetix.de> (Oliver Fromme's message of "Fri, 13 Apr 2007 17:20:28 %2B0200 (CEST)")
References:  <200704131520.l3DFKSLs041554@lurza.secnetix.de>

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Oliver Fromme <olli@lurza.secnetix.de> writes:
> Just a quick question: Does ZFS still work reliable when the write
> cache for ATA disks is enabled, i.e. with the line "hw.ata.wc=3D1" in
> /boot/loader.conf?

Yes, as long as the disk doesn't lie about flushing its cache.  Some
early ATA disks faked the FLUSHCACHE command to improve their
benchmark results.  I don't know if any still do.

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no



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