Hi, On 10/15/2016 10:49 PM, Stefan Priebe - Profihost AG wrote: > > cp --reflink=always takes sometimes very long. (i.e. 25-35 minutes) > > An example: > > source file: > # ls -la vm-279-disk-1.img > -rw-r--r-- 1 root root 204010946560 Oct 14 12:15 vm-279-disk-1.img > > target file after around 10 minutes: > # ls -la vm-279-disk-1.img.tmp > -rw-r--r-- 1 root root 65022328832 Oct 15 22:13 vm-279-disk-1.img.tmp Two quick thoughts: 1. How many extents does this img have? 2. Is this an XY problem? Why not just put the img in a subvolume and snapshot that? K -- 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
