On Tue, 2015-12-08 at 22:27 -0700, Chris Murphy wrote: > On Tue, Dec 8, 2015 at 10:02 PM, David Hampton > <mailinglists@xxxxxxxxxxxxx> wrote: > > The > > 'btrfs fi df' command consistently shows a total size of around > > 3TB, and says that space is almost completely full. > > and > > > > root@selene:~# btrfs fi df /video > > Data, RAID6: total=3.15TiB, used=3.11TiB > > The "total=3.15TiB" means "there's a total of 3.15TiB allocated for > data chunks using raid6 profile" and of that 3.11TiB is used. > > btrfs fi df doesn't ever show how much is free or available. I think I get it. The numbers in the 'df' command don't show the total number of chunks that exist, only the subset of those chunks that have been allocated to something. > You can get an estimate of that by using 'btrfs fi usage' instead. Seems I need to upgrade my tools. That command was added in 3.18 and I only have the 3.12 tools. > > root@selene:~# df -h /video > > Filesystem Size Used Avail Use% Mounted on > > /dev/vda 15T 3.2T 8.3T 28% /video > > That's about right although it seems it's slightly overestimating the > available free space. Thanks. Make me feel a lot better. David -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
