Ok, I have removed the snapshot and the free expected space is here, thank you! As a side note: apt-btrfs-snapshot was not installed, but it is present in Ubuntu repository and I have used it (and I like the idea of automatic snapshot during upgrade) This means that the do-release-upgrade does it's own job on BTRFS, silently which I believe is not good from the usability perspective, just google it, there is no mention of this behaviour Il giorno mar 28 ago 2018 alle ore 19:07 Austin S. Hemmelgarn <ahferroin7@xxxxxxxxx> ha scritto: > > On 2018-08-28 12:05, Noah Massey wrote: > > On Tue, Aug 28, 2018 at 11:47 AM Austin S. Hemmelgarn > > <ahferroin7@xxxxxxxxx> wrote: > >> > >> On 2018-08-28 11:27, Noah Massey wrote: > >>> On Tue, Aug 28, 2018 at 10:59 AM Menion <menion@xxxxxxxxx> wrote: > >>>> > >>>> [sudo] password for menion: > >>>> ID gen top level path > >>>> -- --- --------- ---- > >>>> 257 600627 5 <FS_TREE>/@ > >>>> 258 600626 5 <FS_TREE>/@home > >>>> 296 599489 5 > >>>> <FS_TREE>/@apt-snapshot-release-upgrade-bionic-2018-08-27_15:29:55 > >>>> 297 599489 5 > >>>> <FS_TREE>/@apt-snapshot-release-upgrade-bionic-2018-08-27_15:30:08 > >>>> 298 599489 5 > >>>> <FS_TREE>/@apt-snapshot-release-upgrade-bionic-2018-08-27_15:33:30 > >>>> > >>>> So, there are snapshots, right? The time stamp is when I have launched > >>>> do-release-upgrade, but it didn't ask anything about snapshot, neither > >>>> I asked for it. > >>> > >>> This is an Ubuntu thing > >>> `apt show apt-btrfs-snapshot` > >>> which "will create a btrfs snapshot of the root filesystem each time > >>> that apt installs/removes/upgrades a software package." > >> Not Ubuntu, Debian. It's just that Ubuntu installs and configures the > >> package by default, while Debian does not. > > > > Ubuntu also maintains the package, and I did not find it in Debian repositories. > > I think it's also worth mentioning that these snapshots were created > > by the do-release-upgrade script using the package directly, not as a > > result of the apt configuration. Meaning if you do not want a snapshot > > taken prior to upgrade, you have to remove the apt-btrfs-snapshot > > package prior to running the upgrade script. You cannot just update > > /etc/apt/apt.conf.d/80-btrfs-snapshot > Hmm... I could have sworn that it was in the Debian repositories. > > That said, it's kind of stupid that the snapshot is not trivially > optional for a release upgrade. Yes, that's where it's arguably the > most important, but it's still kind of stupid to have to remove a > package to get rid of that behavior and then reinstall it again afterwards.
