On Sat, Oct 22, 2016 at 09:03:16AM +1100, Gareth Pye wrote: > I've got a BTRFS array that is of mixed size disks: > 2x750G > 3x1.5T > 3x3T > And it's getting fuller than I'd like. The problem is that adding > disks is harder than one would like as the computer only has 8 sata > ports. Is it viable to do the following to upgrade one of the disks? > > A) Take array offline > B) DD the contents of one of the 750G drives to a new 3T drive > C) Remove the 750G from the system > D) btrfs scan > E) Mount array > F) Run a balance > > I know that not physically removing the old copy of the drive will > cause massive issues, but if I do that everything should be fine > right? Yes. The one thing missing here is running # btrfs dev resize <devid>:max /mountpoint on the new device between steps E and F to allow the FS to use the full amount of the device. Otherwise, it'll still be the same size as the original. Hugo. -- Hugo Mills | Great films about cricket: Batsman Begins hugo@... carfax.org.uk | starring Christian Bail http://carfax.org.uk/ | PGP: E2AB1DE4 |
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