Hi,
I am fighting with this since at least Monday - see
https://superuser.com/questions/1096658/btrfs-out-of-space-even-though-there-should-be-10-left
Here's the data:
# uname -a
Linux archb3 4.6.3-2-ARCH #1 PREEMPT Wed Jun 29 07:15:33 MDT 2016
armv5tel GNU/Linux
# btrfs --version
btrfs-progs v4.6
# btrfs fi show
Label: 'home' uuid: 1c7e35e8-f013-4f65-9d19-eaa168ac088b
Total devices 1 FS bytes used 1.71TiB
devid 1 size 1.81TiB used 1.71TiB path /dev/sda4
# btrfs fi df /home
Data, single: total=1.71TiB, used=1.71TiB
System, DUP: total=32.00MiB, used=224.00KiB
Metadata, DUP: total=4.00GiB, used=2.07GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
# btrfs f usage -T /home
Overall:
Device size: 1.81TiB
Device allocated: 1.71TiB
Device unallocated: 97.89GiB
Device missing: 0.00B
Used: 1.71TiB
Free (estimated): 98.22GiB (min: 49.27GiB)
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data Metadata System
Id Path single DUP DUP Unallocated
-- --------- ------- -------- --------- -----------
1 /dev/sda4 1.71TiB 8.00GiB 64.00MiB 97.89GiB
-- --------- ------- -------- --------- -----------
Total 1.71TiB 4.00GiB 32.00MiB 97.89GiB
Used 1.71TiB 2.07GiB 224.00KiB
# btrfs fi du -s /home
Total Exclusive Set shared Filename
1.60TiB 1.60TiB 0.00B /home
# btrfs f resize 1:+1G /home/
Resize '/home/' of '1:+1G'
ERROR: unable to resize '/home/': no enough free space
This all is after closely following:
https://btrfs.wiki.kernel.org/index.php/FAQ#Help.21_I_ran_out_of_disk_space.21
http://marc.merlins.org/perso/btrfs/post_2014-05-04_Fixing-Btrfs-Filesystem-Full-Problems.html
So, already did full volume rebalance, defrag, rebooted multiple times
- still, "Error: out of disk space".
To sum up:
- my files sum to 1.6 TiB
- disk usage is shown to be 1.71 TiB
- volume size is 1.81 TiB
- btrfs util shows I have ~98 GiB free space on the volume
- I am getting "out of space" message
Bonus:
- I removed 50 GB of data from the drive and I still get "out of
space" message after writing ~1 GB.
Help would be very appreciated.
Cheers,
Stan
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