Date: Tue, 01 Aug 2006 13:43:10 -0700 From: Lee Damon <nomad@castle.org> To: Eric Anderson <anderson@centtech.com> Cc: freebsd-geom@freebsd.org Subject: Re: growfs, old disks, gvinum - filesystem expansion and corruption Message-ID: <44CFBCDE.7040003@castle.org> In-Reply-To: <44CFB908.40904@centtech.com> References: <44CFB4AB.4080803@castle.org> <44CFB908.40904@centtech.com>
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> = Eric Anderson >> = me ... >> My questions are: >> 1. Is there any way to clean up the old file system cruft without >> crashing/trashing/deleting the system? > > You could use dd to write zeros over the old areas to wipe out the old > filesystem data. Careful! Is there a way to find out which parts of the "disk" are currently not in use by an active gvinum area? >> 2. What tool should I be using to calve off slices of a 'huge' drive >> and later expand it? > > Why not use fdisk/bsdlabel? I didn't think that could be done with a live/active/mounted drive or with more than a handful of slices. [The system currently has 16 mounted gvinum-based filesystems, some of which will end up being made of 3 (or more) individual slices based on growth]. nomad
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