Date: Sat, 30 May 2009 22:36:43 +0100 From: xorquewasp@googlemail.com To: Mike Meyer <mwm@mired.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Request for opinions - gvinum or ccd? Message-ID: <20090530213643.GA1478@logik.internal.network> In-Reply-To: <20090530162744.5d77e9d1@bhuda.mired.org> References: <20090530175239.GA25604@logik.internal.network> <20090530144354.2255f722@bhuda.mired.org> <20090530191840.GA68514@logik.internal.network> <20090530162744.5d77e9d1@bhuda.mired.org>
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On 2009-05-30 16:27:44, Mike Meyer wrote: > > The last bit is wrong. Moving a zfs pool between two systems is pretty > straightforward. The configuration information is on the drives; you > just do "zpool import <pool>" after plugging them in, and if the mount > point exists, it'll mount it. If the system crashed with the zfs pool > active, you might have to do -f to force an import. Geom is pretty > much the same way, except you can configure it to not write the config > data to disk, thus forcing you to do it manually (what you > expect). I'm not sure geom is as smart if the drives change names, > though. > > RAID support and volume management has come a long way from the days > of ccd and vinum. zfs in particular is a major advance. If you aren't > aware of it's advantages, take the time to read the zfs & zpool man > pages, at the very least, before committing to geom (not that geom > isn't pretty slick in and of itself, but zfs solves a more pressing > problem). > > Hmm. Come to think of it, you ought to be able to use gstrip to stripe > your disks, then put a zpool on that, which should get you the > advantages of zfs with a striped disk. But that does seem odd to me. I'll definitely be looking at ZFS. Thanks for the info. I've never been dead set on any option in particular, it's just that I wasn't aware of anything that would do what I wanted that wasn't just simple RAID0 and manual backups.
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