On 03/01/2014 10:19 PM, Jon wrote:
The inability to shrink or reduce XFS is rather disappointing. I've seen a few sarcastic remarks along the lines of (paraphrased): why would anyone ever want to shrink a volume?
If you use a dm-thin target with a shared storage pool (even if the file system is fully backed, i.e. not actually thin), you will get the best case for shrinking.
You can set up say a 1TB file system and only use space that is consumed by the actual users of that file system.
When users delete a file, that freed space is returned to the pool and can be reassigned to other file systems.
Also keep in mind that shrinking - on any file system - often really messes up your data allocation and can have bad performance impacts (on ext3 or ext4).
You can always do better when you tar up your old data, make a new, smaller file system and then restore it.
That said, it is not impossible to add shrink to XFS, we just need to bubble that up the priority queue of things to do.
thanks! Ric -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
