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On Thursday 06 August 2015 12:09:20 Jeremi Piotrowski wrote: |
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> On Thu, 6 Aug 2015, Peter Humphrey wrote: |
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> > First, btrfs balance. I had no idea that was needed, so of course I didn't |
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> > include it in my attempts. Could that be why, on booting, the kernel |
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> > couldn't mount the file system? |
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> |
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> I don't think that balancing an empty btrfs filesystem is necessary. It |
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> should have no effect at this point and would not affect the kernel's |
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> ability to mount the btrfs volume. |
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I'm part-way through a VM installation, and when I ran btrfs balance it told |
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me it had "moved 6 out of 6 chunks" so I guess it does have an effect. |
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--->8 |
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> > Finally, can I assume that your procedure would work just as well |
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> > installing into, say, /dev/sd[ab]4? |
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> |
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> Yep, but as stated by Rich there isn't much to a btrfs raid 1 install |
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> aside from mkfs.btrfs, building btrfs support into the |
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> kernel, the slightly different fstab entry, and using an initramfs (dracut |
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> makes it easy). |
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The arrangement I have in mind is sd[ab]1 raid-1 /boot, sd[ab]2 swap, sd[ab]3 |
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rescue system, sd[ab]4 btrfs gentoo. Maybe I could get away without swap since |
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this box has 16GB RAM, but I'm not ready to do without my rescue system. |
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> I do recommend that you try it in a virtual machine first. With an |
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> initramfs it worked out of the box for me but I wasn't able to get it to |
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> work with just the kernel command line. |
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I'll let you know when I've finished building the VM and tried to boot it. |
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Thanks for your help. |
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-- |
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Rgds |
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Peter |
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