On 06/30/2015 11:10 AM, David Weber wrote:
I use Btrfs with regular snapshots on my workstation with Virtualbox since years. Running filefrag on the image doesn't complete after hours but the IO of the VM is still "fast enough". But the definition of "fast enough" can vary heavily.
How do you backup the VM images? If filefrag takes hours to complete, I'd assume that attempting a sequential read of the whole file (from a backup software) takes just as long.
If it becomes to slow I will try a btrfs fi deframent or just recreate the image with a no reflink copy.
Chances are this will also take hours. Regards, Lutz Vieweg -- 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
