Hi! merkaba:~> btrfs balance start -m / ERROR: error during balancing '/' - No space left on device There may be more info in syslog - try dmesg | tail merkaba:~#19> dmesg | tail -22 [ 62.918734] CPU0: Package power limit normal [ 525.229976] btrfs: relocating block group 20422066176 flags 1 [ 526.940452] btrfs: found 3048 extents [ 528.803778] btrfs: found 3048 extents [ 528.988440] btrfs: relocating block group 17746100224 flags 34 [ 529.116424] btrfs: found 1 extents [ 529.247866] btrfs: relocating block group 17611882496 flags 36 [ 536.003596] btrfs: found 14716 extents [ 536.170073] btrfs: relocating block group 17477664768 flags 36 [ 542.230713] btrfs: found 13170 extents [ 542.353089] btrfs: relocating block group 17343447040 flags 36 [ 547.446369] btrfs: found 9809 extents [ 547.663141] btrfs: 1 enospc errors during balance [ 629.238168] btrfs: relocating block group 21894266880 flags 34 [ 629.359284] btrfs: found 1 extents [ 629.520614] btrfs: 1 enospc errors during balance [ 630.715766] btrfs: relocating block group 21927821312 flags 34 [ 630.749973] btrfs: found 1 extents [ 630.899621] btrfs: 1 enospc errors during balance [ 635.872857] btrfs: relocating block group 21961375744 flags 34 [ 635.906517] btrfs: found 1 extents [ 636.038096] btrfs: 1 enospc errors during balance
merkaba:~> btrfs filesystem show failed to read /dev/sr0 Label: 'debian' uuid: […] Total devices 1 FS bytes used 7.89GB devid 1 size 18.62GB used 17.58GB path /dev/dm-0 Btrfs Btrfs v0.19 merkaba:~> btrfs filesystem df / Data: total=15.52GB, used=7.31GB System, DUP: total=32.00MB, used=4.00KB System: total=4.00MB, used=0.00 Metadata, DUP: total=1.00GB, used=587.83MB This is repeatable. martin@merkaba:~> cat /proc/version Linux version 3.3.0-trunk-amd64 (Debian 3.3.4-1~experimental.1) (debian- kernel AT lists.debian.org) (gcc version 4.6.3 (Debian 4.6.3-1) ) #1 SMP Wed May 2 06:54:24 UTC 2012 Which is Debian´s variant of 3.3.4 with commit bfe050c8857bbc0cd6832c8bf978422573c439f5 Author: Chris Mason <chris.mason AT oracle.com> Date: Thu Apr 12 13:46:48 2012 -0400 Revert "Btrfs: increase the global block reserve estimates" commit 8e62c2de6e23e5c1fee04f59de51b54cc2868ca5 upstream. This reverts commit 5500cdbe14d7435e04f66ff3cfb8ecd8b8e44ebf. We've had a number of complaints of early enospc that bisect down to this patch. We'll hae to fix the reservations differently. Signed-off-by: Chris Mason <chris.mason AT oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh AT linuxfoundation.org> from 3.3.3. May I need to wait for a proper fix to global block reserve for the balance to succeed or do I see a different issue? Since scrubbing still works I take it that balancing was aborted gracefully and thus the filesystem is still intact. This is on a ThinkPad T520 with Intel SSD 320. I only wanted to reorder metadata trees, I do not think it makes much sense to relocate data blocks on a SSD. Maybe the reordering metadata blocks may not make much sense also, but I thought I still report this. Thanks, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- 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