Date: Mon, 20 Jul 2009 11:56:43 +0200 From: Mark Stapper <stark@mapper.nl> To: stable@freebsd.org Subject: ZFS RAIDZ and atacontrol spindown settings Message-ID: <4A643F5B.8080806@mapper.nl>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigD3AAD6ABCC7D5B5B42CD9B53 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Good day, I am the proud user of a FreeBSD 7.2 AMD64 system housing, amongst other things, a data server. My "server"(It's called "Yoshi") runs FreeBSD from a mirrored system disc, and has a zfs RAIDZ array with 4 discs for bulky data. As it is a home server, and I work during the day, these four discs were spinning happily all day long without much use for them doing so. To save the world(and money) I issued the command "atacontrol spindown 1800" for all the discs in my array spinning them down after thirty minutes of idle spinning. So far so good, me very happy! However, when I access the array after the discs have been spun down, it spins up the discs one after the other.= =2E. Mind you one AFTER the other, taking 4*9 seconds to do a "ls" command on my music directory. Content as I am with the smooth down- and upspinning of the disks, I would like it better if the four discs would spin up simultaneously. Thus my question: "Is it possible to \"group\" discs to be spun up together, or to issue a custom command upon upspinning of a disc such as to spin up other disks?" Thanks! Greetz, Mark --------------enigD3AAD6ABCC7D5B5B42CD9B53 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkpkP14ACgkQN9xNqOOVnWBG+ACeKkrFrWDKRWSfnnxuRpP3HkXK PQ4An2ynFqH2TwKTK2/QZtU7wvhC9tgG =9i0X -----END PGP SIGNATURE----- --------------enigD3AAD6ABCC7D5B5B42CD9B53--
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