On Mon, 27 Mar 2017 15:20:37 +0200 Christian Theune <ct@xxxxxxxxxxxxxxx> wrote: > (Background info: we’re migrating large volumes from btrfs to xfs and can > only do this step by step: copying some data, shrinking the btrfs volume, > extending the xfs volume, rinse repeat. If someone should have any > suggestions to speed this up and not having to think in terms of _months_ > then I’m all ears.) I would only suggest that you reconsider XFS. You can't shrink XFS, therefore you won't have the flexibility to migrate in the same way to anything better that comes along in the future (ZFS perhaps? or even Bcachefs?). XFS does not perform that much better over Ext4, and very importantly, Ext4 can be shrunk. >From the looks of it Ext4 has also overcome its 16TB limitation: http://askubuntu.com/questions/779754/how-do-i-resize-an-ext4-partition-beyond-the-16tb-limit -- With respect, Roman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
