Date: Mon, 18 Jan 2010 00:35:12 +0200 From: Volodymyr Kostyrko <c.kworr@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Newbie gmirror questions Message-ID: <hj03b0$g8n$1@ger.gmane.org> In-Reply-To: <4B534661.7030905@infracaninophile.co.uk> References: <201001152334.52978.jmc-freebsd2@milibyte.co.uk> <201001161545.31616.pieter@degoeje.nl> <201001171639.41777.jmc-freebsd2@milibyte.co.uk> <4B534661.7030905@infracaninophile.co.uk>
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On 17.01.2010 19:18, Matthew Seaman wrote: > Mike Clarke wrote: > >> Actually I was more concerned about what happens when I boot into >> another OS like Windows or Linux on one of the spare slices - I'm >> assuming that I have to apply gmirror to the whole disk rather than >> just selected slices? > > You can't do this. gmirror is FreeBSD specific, and other OSes can't > deal with it. You can take your two drives, partition them (fdisk) and > then create a gmirror across the slices you assign to FreeBSD. Similarly > you could set up md to mirror the slice(s) used for Linux. As far as I > know, Windows doesn't come with OS level mirroring software -- it can use > hostraid[*], or I believe there are some commercial solutions you can > purchase. Or just treat your Windows partitions as two separate drives, > and live without resilience for that OS. I can correct you here. XP Pro and later do know about 'dynamic' disks and they can make mirrors from them. Booting from such disks is a kind pain in the ass but it works for RAID0, RAID1, RAID0+1 and RAID5 setup. I can be wrong, I'm not a Win-fan, I just do know this exists. You can find details here: http://support.microsoft.com/default.aspx/kb/816307 -- Sphinx of black quartz judge my vow.
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