On Sat, Aug 22, 2020 at 3:38 AM Wols Lists <antlists@xxxxxxxxxxxxxxx> wrote: > > On 22/08/20 08:25, Peter Grandi wrote: > >>> [...] Note that it IS a shingled drive, so fine for backup, > >>> >> much less so for anything else. > > It is fine for backup especially if used as a tape that is say > > divided into partitions and backup is done using 'dd' (but > > careful if using Btrfs) or 'tar' or similar. If using 'rsync' or > > similar those still write a lot of inodes and often small files > > if they are present in the source. > > > The idea is an "in place" rsync, with lvm or btrfs or something > providing snapshots. > > That way, I have full backups each of which only takes up the marginal > space required by an incremental :-) In the case where the source and the destination are Btrfs, there can be an advantage to using 'btrfs send' and 'btrfs receive'. No deep traversal is required on either send or receive side, to determine the incremental changes between two snapshots. -- Chris Murphy
