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On Friday 15 April 2011 20:46:47 Mark Shields wrote: |
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> On Fri, Apr 15, 2011 at 2:47 PM, Florian Philipp |
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<lists@×××××××××××.net>wrote: |
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> > Am 15.04.2011 16:56, schrieb James: |
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> > > Hello, |
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> > > |
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> > > New day, and a fresh approach to fixing the raid one install. |
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> > > Following this doc (no lvm no intramfs): |
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> > > http://www.gentoo.org/doc/en/gentoo-x86+raid+lvm2-quickinstall.xml |
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> > > |
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> > > The disk were all resync'd (end of last thread). |
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> > > Since this is a simple 3 partition 2 disk mirror |
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> > > (identical drives & formatting) and I want to mirror |
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> > > all three (/boot, /, swap) |
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> > > |
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> > > I used these commands: |
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> > > mdadm --create /dev/md127 --level=1 --raid-devices=2 |
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> > > --metadata=0.90 /dev/sda1 /dev/sdb1 |
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> > > |
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> > > mdadm --create /dev/md125 --level=1 --raid-devices=2 |
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> > > --metadata=0.90 /dev/sda3 /dev/sdb3 |
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> > > |
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> > > mdadm --create /dev/md126 --level=1 --raid-devices=2 |
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> > > --metadata=0.90 /dev/sda2 /dev/sdb2 |
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> > |
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> > If my theory holds, it should be sufficient if /boot has metadata=0.90 |
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> > because that's what grub has to access. |
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> > |
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> > > So do I need to issue these commands? If so, |
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> > > are they correct? A little unclear on mknod.... |
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> > > |
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> > > livecd ~ # mknod /dev/md127 b 9 1 |
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> > > livecd ~ # mknod /dev/md125 b 9 3 |
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> > > or |
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> > > livecd ~ # mknod /dev/md127 b 9 127 |
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> > > livecd ~ # mknod /dev/md125 b 9 125 |
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> > > livecd ~ # mknod /dev/md126 b 9 126 |
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> > > |
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> > > ??? |
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> > |
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> > I doubt you need mknod. Udev should handle this. |
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> > Maybe you should try it without and see whether udev really creates |
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> > them. If so, you might still add them to the static /dev. Use something |
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> > like this: |
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> > mount --bind / /mnt |
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> > mknod /mnt/dev/md127 b 9 1 |
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> > |
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> > This circumvents udev and writes directly to root. Of course, you have |
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> > to replace / with whatever is the mount point of your root partition |
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> > when you boot from a live-CD. |
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> > |
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> > Regards, |
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> > Florian Philipp |
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> |
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> You need mknod during the creation process when booted from a minimal |
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> install disc; when you finish building the system and boot it the first |
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> time, udev handles it from there. |
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I didn't need mknod when I did this last time. udev picked it up correctly |
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from the start. |
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> And yes, you're right; only boot needs the --metadata=0.90. |
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-- |
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Joost |
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