Date: Tue, 15 May 2012 12:22:06 +0200 From: Paul Schenkeveld <freebsd@psconsult.nl> To: freebsd-fs@freebsd.org Subject: Re: Mirror of Raidz for data reliability Message-ID: <20120515102206.GA53750@psconsult.nl> In-Reply-To: <CAOfEmZh8v5xbQqkJJ7ZKkan7Ho0FPNrXJ95S1WRpioDXVG6P7w@mail.gmail.com>
index | next in thread | previous in thread | raw e-mail
On Mon, May 14, 2012 at 01:35:51AM +0800, Marcelo Araujo wrote: > Hi All, > > Me and a co-work are working in a new feature for ZFS, we have 2 Machines > and 2 JBOD, every Machine are connected on those JBOD via SAS and we are > trying to make a fail-over server. Currently every each Machine has two SAS > cables, each one connected in both JBOD. > > We have worked last week to figure out, how we could make the data be > always alive in case one JBOD dies, and let me show you my console output > ;): > > controllerA# zpool status -v araujo > pool: araujo > state: ONLINE > scan: resilvered 57K in 0h0m with 0 errors on Sat May 12 14:32:29 2012 > config: > > NAME STATE READ WRITE CKSUM > araujo ONLINE 0 0 0 > raidz1-0 ONLINE 0 0 0 > mirror-0 ONLINE 0 0 0 > da0 ONLINE 0 0 0 > da3 ONLINE 0 0 0 > mirror-1 ONLINE 0 0 0 > da1 ONLINE 0 0 0 > da4 ONLINE 0 0 0 > mirror-2 ONLINE 0 0 0 > da2 ONLINE 0 0 0 > da5 ONLINE 0 0 0 > Maybe a dumb question, how you you create the above setup? I seem unable to create a raidz consisting of mirrors neither can I attach a second physical drive to an existing one in a raidz of three single drives: # zpool create tank raidz1 mirror /dev/da0 /dev/da3 mirror /dev/da1 /dev/da4 mirror /dev/da2 /dev/da5 invalid vdev specification: raidz1 requires at least 2 devices # zpool create tank raidz1 /dev/da0 /dev/da1 /dev/da2 # zpool attach tank /dev/da0 /dev/da3 cannot attach /dev/da3 to /dev/da0: can only attach to mirrors and top-level disks # zpool upgrade This system is currently running ZFS pool version 28. All pools are formatted using this version. Kind regards, Paul Schenkeveldhome | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20120515102206.GA53750>