Date: Mon, 13 Apr 2009 02:34:21 -0500 (CDT) From: Wes Morgan <morganw@chemikals.org> To: "Tobias C. Berner" <tcberner@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: zfs and moving devices Message-ID: <alpine.BSF.2.00.0904130230280.1902@ibyngvyr.purzvxnyf.bet> In-Reply-To: <op.usavwhqoa4qlja@sam.firefly> References: <op.usavwhqoa4qlja@sam.firefly>
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On Mon, 13 Apr 2009, Tobias C. Berner wrote: > I have a zfs pool > > NAME STATE READ WRITE CKSUM > multimedia ONLINE 0 0 0 > ad8 ONLINE 0 0 0 > ad10 ONLINE 0 0 0 > ad12 ONLINE 0 0 0 > ad14 ONLINE 0 0 0 > > Now, I need more sata-connecters. If I activate > an other onboard-controller, the device names > move: > > ad8 -> ad14 > ad10 -> ad16 > ad12 -> ad18 > ad14 -> ad20 > > > What is the proper way to handle this in zfs? Export the pool before you make the change and it should work no problem. You may want to enable ATA_STATIC_ID as well so you won't have to worry about it either. On another note, that's a 4 device pool with no redundancy. Make sure you have frequent backups! I lost my "multimedia" pool once during a migration and was very sad. Now I use raidz2.
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