On Wed 2019-07-17 (09:45), Bernhard Kühnel wrote: > Am 17.07.2019 um 01:24 schrieb Ulli Horlacher: > > > How do I know that /mnt/tmp/ss is a snapshot? > > I cannot see a snapshot identifier. > > From the btrfs-subvolume man page: > > > A snapshot is a subvolume like any other, with given initial content. > >By default, snapshots are created > > read-write. File modifications in a snapshot do not affect the files > >in the original subvolume.
I know this, but my question was not "What is a snapshot". > I believe the usual practice is to create snapshots with the -r flag and > follow some naming convention (e.g. place them in a common .snapshots > folder named by date), but you're free to switch between read-only and > read-write mode for a snapshot at any time using the btrfs property command. This is true also for my users and co-admins. Though, I want to know which subvolume is a snapshot of what subvolume. Non-toplevel subvolume snapshots have a Parent UUID - why not all?! Or at least some kind of flag "I am a snapshot". -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlac...@tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<1858db2d-8683-0ba9-cc13-9e654a1fa...@allchangeplease.de>
