Date: Thu, 17 Aug 2006 09:40:36 -0500 From: Brooks Davis <brooks@one-eyed-alien.net> To: Antony Mawer <fbsd-stable@mawer.org> Cc: freebsd-stable@freebsd.org Subject: Re: The need for initialising disks before use? Message-ID: <20060817144036.GE89359@lor.one-eyed-alien.net> In-Reply-To: <44E47092.7050104@mawer.org> References: <44E47092.7050104@mawer.org>
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--10jrOL3x2xqLmOsH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 17, 2006 at 03:35:14AM -1000, Antony Mawer wrote: > Hi list, >=20 > A quick question - is it recommended to initialise disks before using=20 > them to allow the disks to map out any "bad spots" early on? I've seen=20 > some "uninitialised" disks (ie. new disks, thrown into a machine,=20 > newfs'd) start to show read errors within a few months of deployment,=20 > which I thought one or two might seem okay, but on a number of machines= =20 > is more than a coincidence... >=20 > Is it recommended/required to do something like: >=20 > dd if=3D/dev/zero of=3D/dev/ad0 bs=3D1m >=20 > before use to ensure the drive's sector remappings are all in place,=20 > before then doing a newfs? >=20 > FWIW, I've been seeing this on more 6.0 systems that I would have=20 > thought to be just chance... This probably isn't a bad idea in general. It might even be something we should add to sysinstall. -- Brooks --10jrOL3x2xqLmOsH Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFE5H/jXY6L6fI4GtQRAqgzAJ4mUNYF+g0xpxS72Rk7MbG0zMZEKgCfep1/ mndlt3FTNwhzCO0CqJ9hjpo= =YdyP -----END PGP SIGNATURE----- --10jrOL3x2xqLmOsH--
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