Hi. On Sun, 19 Jan 2014 16:15:31 +0000 Ron Leach <ronle...@tesco.net> wrote:
> 1. First insert the 2 3TB drives and, using the existing Wheezy, > create a raid1 array. I would create three md arrays: > md0 for Grub, 100 MB > md1 for Wheezy, 250 GB > md2 for the LV filesystem, approx 2.75 TB. Given you're using >2Tb disks, GPT would be nessessary, and GRUB2 will fail to install unless you'll create special 'bios_grub' partition. I did similar thing recently, and my setup was: bios_grub partition for grub2 (it failed to boot without it) - 1Mb md0 for grub - 128Mb md1 as a physical volume for the rest of the RAID1. I've put root filesystem, /var filesystem and swap on a volume group on a LVM to simplify backup. GRUB was installed on both disks. bios_grub was put on both disks. > 3. The Debian installer created several partitions for the Wheezy > install and, in my plan, I do not have those partitions replicated in > the raid1 system. So, moving (or copying, perhaps, is a better word) > Wheezy to /dev/md1 poses a little more difficulty. Though I would > have used DD if it were simply a matter of copying from one whole disk > to another, this time I need to copy the whole of '/' (which is > mounted on several partitions), while retaining all the metadata, etc. Don't use dd for this unless you remount filesystems read-only (or unmount them). I used this: https://wiki.debian.org/ReadonlyRoot so things were simple for me (i.e. create lv, copy block device into lv). > I think I would need to > (a) create a filesystem on md1, and then > (b) use cp, perhaps, as root, to copy the whole of / (excluding any > nfs mount points). I've previously used the '-a' option with cp to > ensure that metadata is retained. Will work, although I'd prefer tar or cpio for this. > But I worry this won't work because /usr (for example) is a separate > mount point in fstab and I'll have to remove those (because the whole > of / would now be on a single partition), but I'm not sure if fstab > would be the only thing that needed to change. At very least, you'll also need to reinstall GRUB on the RAID1 and rebuild initrd. Whenever you'll keep /usr separate, or not is irrelevant. Reco. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20140119215721.054133520ad235cf18171...@gmail.com
