Hello, I've decided to go with a snapshot-based backup solution for our new Linux desktops -- thank you for the timely thread --, namely btrbk. A couple of subvolumes for different stuff, with hourly snapshots that regularly go to another machine. Brilliant in theory, less so in practice, because every time btrbk runs, the box'll freeze for a few seconds, as in, Firefox and LibreOffice, for instance, become entirely unresponsive, games hang and so on. (AFAICT, all it does is snapshot each subvolume and delete ones that are out of the retention period.) I'm aware that having many snapshots can impact performance of some operations, but I didn't think that "many" <= 200, "impact" = stop dead and "some operations" = light desktop use. These are decently specced, after all (Zen 2 8/12 core, 32 GB RAM, Samsung 970 Evo Plus). What I'm asking is, is this to be expected, does it just need tuning, is the hardware buggy, the kernel version (Ubuntu 18.04.3 HWE, their 5.0 series) a stinker, something else awry ...? Cheers, C.
