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A comment on Things you can do with ZFS [video]. Parent comment

Re:Things you can do with ZFS [video] by cmurf on Thursday October 08, 2015 @11:17AM (#10353290)
md RAID will require a lengthy reshape. BTRFS supports adding a new drive, reshape (balance) is optional.
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Re:Things you can do with ZFS [video] by throwaway7767 on Thursday October 08, 2015 @12:15PM (#10353703)
> md RAID will require a lengthy reshape

Array reshapes are rare, and it'll only use idle IO bandwidth anyway. Redundancy is guaranteed during the whole process. So I don't see this as a problem.

> BTRFS supports adding a new drive, reshape (balance) is optional

Thanks for pointing this out. I didn't know btrfs supported array reshapes. I'm waiting for it to mature (RAID5/6 was only added in 3.19, for example) but I expect I'll switch over at some point, probably at the point it's considered "boring" (exactly the experience I want from my filesystems).

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