On Thu, Sep 22, 2005 at 09:08:52PM +1000, Raphael Kraus wrote: > We're trying to set-up a host with software RAID (mirroring) and LVM at > work (for a backup server). > > Just trying to install Debian with RAID partitions is proving painful. > > Anyone done this before? Any recommendations, tips, suggested methods? > > I'm thinking I should install to one drive putting a plain boot > partition and then a LVM on it, leaving the second alone. Once install > is complete create the RAID with the second drive marked as failed. (I > can remember doing this a while back, but I think RAID has changed on > Linux now.) Eh? You just create a RAID partition, and then lay LVM on the md device. The kernel/initrd just works it all out and you've got /dev/mapper/vg-lv to play with once the system's booted. You can even put your root partition on it (although you do need to have a non-LVM /boot partition, but that's easy enough to manage with a separate little partition at the front of the disk). The partitioner in d-i is da bomb for this sort of thing; it supports all these sorts of shenanigans right out of the box (although unfortunately not in an automatable fashion yet). - Matt  Doing it the other way around (RAID on top of LVs) makes no sense; you'd have to have duplicate VGs on both disks, make duplicate LVs on each physical disk and then tell the RAID code to mirror each one.
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