On 10/22/2015 02:47 AM, Ondřej Grover wrote: > Thank you Sarunas for the graphs, it is most illuminating. That's pretty > much how I imagine a storage server should behave. > Atomic snapshots are very appealing indeed. In my case cp -lr or > --link-dest solutions would take a long time as the FS hierarchy is both > very broad and deep.
Ondřej, you're are welcome. “For the sake of science” I restarted the backups' server yesterday with a kernel boot parameter mem=1G. All the nightly rsync jobs and btrfs snapshot manipulations went as usual, and the server is running fine: https://math.dartmouth.edu/owncloud/index.php/s/fYO81CfmuV5yrpZ So 1G RAM might still do just fine for such basic tasks. -- Sarunas Burdulis Systems Administrator Department of Mathematics, Dartmouth College http://math.dartmouth.edu/~sarunas