Date: Tue, 05 Feb 2008 20:17:11 -0800 From: Drew Tomlinson <drew@mykitchentable.net> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: Christian Baer <christian.baer@uni-dortmund.de>, freebsd-questions@freebsd.org Subject: Re: Looking for a Text on ZFS Message-ID: <47A934C7.70707@mykitchentable.net> In-Reply-To: <20080204162233.M8365@wojtek.tensor.gdynia.pl> References: <fo2f26$1l2q$1@nermal.rz1.convenimus.net> <200802022111.21862.fbsd.questions@rachie.is-a-geek.net> <fo48j6$1p19$1@nermal.rz1.convenimus.net> <20080203173245.U1631@wojtek.tensor.gdynia.pl> <fo6vjo$1vo5$2@nermal.rz1.convenimus.net> <20080204133351.P7781@wojtek.tensor.gdynia.pl> <fo78an$1vo5$3@nermal.rz1.convenimus.net> <20080204162233.M8365@wojtek.tensor.gdynia.pl>
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Wojciech Puchar wrote: [snip] >>> mirror. that's all. >> >> Which doesn't really address the issue of what happens if a drive >> that is >> part of a big ZFS is removed (because it's broken). > > it will say "read error" on all files and directories that happened > to be placed on that disk! Just to be clear, ZFS pools contain one or more VDEVs (Virtual devices). Each VDEV consists of one or more physical partitions and can be configured as a mirror, stripe, stripe with one parity, or stripe with 2 parity. ZFS does striping with no parity across all VDEVs in the pool. Thus with ZFS, if you lose a VDEV, you lose the whole pool. Hopefully that clears things up a bit. Cheers, Drew [snip]
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