On Wed, 12 Feb 2020 23:08:03 -0700 Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > Host: kernel 5.5.3, qemu-kvm, Btrfs, backing file is raw with +C 5.6. > Guest: kernel 5.6.0-rc1, / is Btrfs > > Boot and login, and immediately run these commands: > > [root@localhost ~]# df -h > /dev/vda4 96G 4.4G 91G 5% / > # fstrim -v / > /: 91 GiB (97633062912 bytes) trimmed > > 1 minute later > > [root@localhost ~]# fstrim -v / > /: 3.5 GiB (3747549184 bytes) trimmed > [root@localhost ~]# > > There's no activity happening in this one minute period. Reboot, and > it's reproducible again. 91G trimmed the first time then 3.5G the > second. Seems like new and unusual behavior. No kernel messages at all > in either host or guest. For completeness, what would be returned the 3rd time you trim? -- With respect, Roman
