* If this NOT solve the "No space left" issues you must remove old snapshots.
2016-09-20 9:27 GMT+02:00 Peter Becker <floyd....@gmail.com>: > Data, RAID1: total=417.12GiB, used=131.33GiB > > You have 417(total)-131(used) blocks wo are only partial filled. > You should balance your file-system. > > At first you need some free space. You could remove some files / old > snapshots etc. or you add a empty USB-Stick with min. 4 GB to your > BTRFS-Pool (after balancing complete you can remove the stick from the > pool). > > But at first you should try to free emty data and meta data blocks: > > btrfs balance start -musage=0 /mnt > btrfs balance start -dusage=0 /mnt > > Then you an run a full balance or a partial balance: > > #a partial balance with reorganize data blocks less then 50% filled > btrfs balance start -dusage=50 /mnt > > #or a full balance > btrfs balance start /mnt > > Because of a possible bug you should disable all snapshot scripts > (like cron-jobs) during the balance. > > If this solve the "No space left" issues you must remove old snapshots. > > 2016-09-20 8:58 GMT+02:00 Hugo Mills <h...@carfax.org.uk>: >> On Tue, Sep 20, 2016 at 03:47:14PM +0900, Tomasz Chmielewski wrote: >>> How to understand the following "btrfs fi show" output? >> >> This gives a write-up (and worked example) of an answer to your question: >> >> https://btrfs.wiki.kernel.org/index.php/FAQ#Understanding_free_space.2C_using_the_original_tools >> >> If you've got any follow-up questions after reading it, please do >> come back and we can try to improve the FAQ entry. :) >> >> Hugo. >> >>> # btrfs fi show /var/lib/lxd >>> Label: 'btrfs' uuid: f5f30428-ec5b-4497-82de-6e20065e6f61 >>> Total devices 2 FS bytes used 136.18GiB >>> devid 1 size 423.13GiB used 423.13GiB path /dev/sda3 >>> devid 2 size 423.13GiB used 423.13GiB path /dev/sdb3 >>> >>> Why is it "size 423.13GiB used 423.13GiB"? Is it full? >>> >>> I had "No space left" on this filesystem just yesterday (running >>> kernel 4.7.4). This is btrfs RAID-1 on SSD disks. This filesystem is >>> used for 20-30 LXD containers with different roles (mongo, mysql, >>> postgres databases, webservers etc.), around 150 read-only >>> snapshots, btrfs compression is disabled. >>> >>> >>> Both "btrfs fi df" and "df -h" show plenty of space: >>> >>> # btrfs fi df /var/lib/lxd >>> Data, RAID1: total=417.12GiB, used=131.33GiB >>> System, RAID1: total=8.00MiB, used=80.00KiB >>> Metadata, RAID1: total=6.00GiB, used=4.86GiB >>> GlobalReserve, single: total=512.00MiB, used=0.00B >>> >>> >>> # df -h >>> Filesystem Size Used Avail Use% Mounted on >>> /dev/sda3 424G 137G 286G 33% /var/lib/lxd >>> >>> >>> >>> Tomasz Chmielewski >>> https://lxadm.com >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >>> the body of a message to majord...@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> -- >> Hugo Mills | I can resist everything except temptation. >> hugo@... carfax.org.uk | >> http://carfax.org.uk/ | >> PGP: E2AB1DE4 | -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
