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bumbling fool
Asked: 2011-02-09 10:21:47 +0800 CST

Using btrfs in RAID arrays and partitioning

  • 772

Probably stupid questions but here goes:

  1. Can btrfs use only a portion of a HDD in a raid "array"?

  2. I have 3 HDDs: 80GB, 160GB, and 200GB external USB. I want to put root+boot in the first 20GB of the smallest drive on EXT4 and use the rest of the free space on all 3 drives for a btrfs "raid10 array". Is this possible?

  3. Is this sane? Would you do it differently?

partitioning

2 Answers

  1. 1) Yes
    2) Yes
    3) Seems sane to me.

    • 1

  2. 1) Yes, but this can cause problem's in the earlier versions of the FS (pre may 2011).
    2) Although this can be done, in hindsight, I should have either used all drives in an array with /boot and everything else on there, or added another smaller driver for /boot & /root
    3) Not really... See 2

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