On Thu, Dec 21, 2006 at 02:00:46PM -0500, Steven M. Bellovin wrote: > I'm putting together a new server that will use RAIDframe for RAID-1 on > two drives. I plan to run FreeBSD in an fdisk partition using the VT > support in Xen 3. The question is what do I do about RAID and that > partition? > > Once choice is to do nothing, and use the corresponding space on the > second drive for something else. .. such as periodic snapshots of the first filesystem, rather than a live mirror where you get to destroy both copies of your data at once. > A second is to use FreeBSD's geom mirror on that part of both > drives. I have no idea if that will work. It should, if you give it the two drives. With a little care about geometery, offsets, partition names in fstab, drivers and the like, that may also allow dual-booting that install, either natively on the hardware or in a Xen HVM, while maintaining the mirroring. There's no mirroring, but I have a usb flash stick with a NetBSD install on it, that I can boot natively, under HVM, or as a domU. The major pain is the switch from /dev/wd0 to /dev/xbd0, something that doesn't affect switching a linux install between domU and HVM since both see /dev/hda. > A third choice -- is there a third choice? Hand the freebsd domU a raid1x partition from dom0, rather than a wd0x partition. Other than dual-booting without Xen, is there another particular reason you want to use an MBR partition? -- Dan.
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