On Tue, Aug 22, 2017 at 10:12:25AM -0400, Austin S. Hemmelgarn wrote: > On 2017-08-22 09:53, Ulli Horlacher wrote: > >On Tue 2017-08-22 (09:37), Austin S. Hemmelgarn wrote: > > > >>>root@fex:~# df -T /local/.backup/home > >>>Filesystem Type 1K-blocks Used Available Use% Mounted on > >>>- - 1073740800 104252160 967766336 10% /local/.backup/home > >> > >>Hmm, now I'm really confused, I just checked on the Ubuntu 17.04 and > >>16.04.3 VM's I have (I only run current and the most recent LTS > >>version), and neither of them behave like this. > > > >I have this kind of output on all of my Ubuntu hosts: > > > >root@moep:~# grep PRETTY_NAME /etc/os-release > >PRETTY_NAME="Ubuntu 16.04.3 LTS" > > > >root@moep:~# df -T /usb/UF/tmp/blubb > >Filesystem Type 1K-blocks Used Available Use% Mounted on > >- - 12581888 3690524 7253700 34% /usb/UF/tmp/blubb > > > >root@moep:~# btrfs subvolume show /usb/UF/tmp/blubb > >/usb/UF/tmp/blubb > > Name: blubb > > UUID: ecf8c804-d4a3-9948-89fe-b0c1971c25cb > > Parent UUID: - > > Received UUID: - > > Creation time: 2017-08-22 12:54:16 +0200 > > Subvolume ID: 262 > > Generation: 23 > > Gen at creation: 22 > > Parent ID: 5 > > Top level ID: 5 > > Flags: - > > Snapshot(s): > > > >root@moep:~# dpkg -l | grep btrfs > >ii btrfs-tools 4.4-1ubuntu1 > > amd64 Checksumming Copy on Write Filesystem utilities > > > Hmm, interesting. Are you using qgroups by chance?
I get this behaviour (the "- -") only if it's a non-mounted subvolume: hrm@amelia:~ $ df -T . Filesystem Type 1K-blocks Used Available Use% Mounted on /dev/sdb1 btrfs 117220284 95271852 18611060 84% /home hrm@amelia:~ $ sudo btrfs sub crea foo Create subvolume './foo' hrm@amelia:~ $ df -T ./foo Filesystem Type 1K-blocks Used Available Use% Mounted on - - 117220284 95271880 18611032 84% /home/hrm/foo hrm@amelia:~ $ sudo mkdir foo/bar hrm@amelia:~ $ df -T foo/bar Filesystem Type 1K-blocks Used Available Use% Mounted on - - 117220284 95271852 18611060 84% /home/hrm/foo hrm@amelia:~ $ mkdir foo2 hrm@amelia:~ $ sudo mount /dev/sdb1 ./foo2 -o subvol=home/hrm/foo hrm@amelia:~ $ df -T foo2 Filesystem Type 1K-blocks Used Available Use% Mounted on /dev/sdb1 btrfs 117220284 95272384 18610528 84% /home/hrm/foo2 Hugo. -- Hugo Mills | "Your problem is that you have a negative hugo@... carfax.org.uk | personality." http://carfax.org.uk/ | "No, I don't!" PGP: E2AB1DE4 | Londo and Vir, Babylon 5
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