btrfs/156 from ubuntu_xfstests_btrfs failed on D

Issue found on node amd64 node "kili"

 btrfs/156 [failed, exit status 1]- output mismatch (see /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.out.bad)
     --- tests/btrfs/156.out 2019-10-16 10:51:13.104701643 +0000
     +++ /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.out.bad 2019-10-16 11:11:52.205883927 +0000
     @@ -1,2 +1,3 @@
      QA output created by 156
     -Silence is golden
     +failed: '/usr/bin/btrfs balance start --full-balance /home/ubuntu/autotest/client/tmp/tmp/xfstests-scratch'
     +(see /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.full for details)
     ...
     (Run 'diff -u /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/tests/btrfs/156.out /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.out.bad' to see the entire diff)

$ diff -u /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/tests/btrfs/156.out /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.out.bad
--- /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/tests/btrfs/156.out 2019-10-16 10:51:13.104701643 +0000
+++ /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.out.bad 2019-10-16 11:11:52.205883927 +0000
@@ -1,2 +1,3 @@
 QA output created by 156
-Silence is golden
+failed: '/usr/bin/btrfs balance start --full-balance /home/ubuntu/autotest/client/tmp/tmp/xfstests-scratch'
+(see /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.full for details)

$ cat /home/ubuntu/autotest/client/tmp/ubuntu_xfstests_btrfs/src/xfstests-bld/xfstests-dev/results//btrfs/156.full
# /usr/bin/btrfs balance start --full-balance /home/ubuntu/autotest/client/tmp/tmp/xfstests-scratch
Done, had to relocate 9 out of 9 chunks
# /usr/bin/btrfs balance start --full-balance /home/ubuntu/autotest/client/tmp/tmp/xfstests-scratch
ERROR: error during balancing '/home/ubuntu/autotest/client/tmp/tmp/xfstests-scratch': No space left on device
There may be more info in syslog - try dmesg | tail
failed: '/usr/bin/btrfs balance start --full-balance /home/ubuntu/autotest/client/tmp/tmp/xfstests-scratch'

syslog:
Oct 16 11:11:44 kili ubuntu: run xfstest btrfs/156
Oct 16 11:11:44 kili kernel: [ 1844.007779] run fstests btrfs/156 at 2019-10-16 11:11:44
Oct 16 11:11:44 kili kernel: [ 1844.228410] BTRFS: device fsid e7e53e40-f4fe-4460-b7bc-3dfcf846bc16 devid 1 transid 5 /dev/sdb2
Oct 16 11:11:44 kili kernel: [ 1844.247603] BTRFS info (device sdb2): disk space caching is enabled
Oct 16 11:11:44 kili kernel: [ 1844.247605] BTRFS info (device sdb2): has skinny extents
Oct 16 11:11:44 kili kernel: [ 1844.247605] BTRFS info (device sdb2): flagging fs with big metadata feature
Oct 16 11:11:44 kili kernel: [ 1844.253106] BTRFS info (device sdb2): enabling ssd optimizations
Oct 16 11:11:44 kili kernel: [ 1844.253767] BTRFS info (device sdb2): checking UUID tree
Oct 16 11:11:48 kili kernel: [ 1848.546002] BTRFS info (device sdb2): balance: start -d -m -s
Oct 16 11:11:48 kili kernel: [ 1848.546141] BTRFS info (device sdb2): relocating block group 609222656 flags data
Oct 16 11:11:49 kili kernel: [ 1848.826415] BTRFS info (device sdb2): found 57 extents
Oct 16 11:11:49 kili kernel: [ 1848.834890] BTRFS info (device sdb2): found 57 extents
Oct 16 11:11:49 kili kernel: [ 1848.840949] BTRFS info (device sdb2): relocating block group 491782144 flags data
Oct 16 11:11:49 kili kernel: [ 1849.379712] BTRFS info (device sdb2): found 112 extents
Oct 16 11:11:49 kili kernel: [ 1849.389757] BTRFS info (device sdb2): found 112 extents
Oct 16 11:11:49 kili kernel: [ 1849.395737] BTRFS info (device sdb2): relocating block group 374341632 flags data
Oct 16 11:11:50 kili kernel: [ 1849.943236] BTRFS info (device sdb2): found 115 extents
Oct 16 11:11:50 kili kernel: [ 1849.954160] BTRFS info (device sdb2): found 114 extents
Oct 16 11:11:50 kili kernel: [ 1849.960252] BTRFS info (device sdb2): relocating block group 256901120 flags data
Oct 16 11:11:50 kili kernel: [ 1850.497052] BTRFS info (device sdb2): found 112 extents
Oct 16 11:11:50 kili kernel: [ 1850.507137] BTRFS info (device sdb2): found 112 extents
Oct 16 11:11:50 kili kernel: [ 1850.513496] BTRFS info (device sdb2): relocating block group 139460608 flags data
Oct 16 11:11:51 kili kernel: [ 1851.093126] BTRFS info (device sdb2): found 112 extents
Oct 16 11:11:51 kili kernel: [ 1851.102458] BTRFS info (device sdb2): found 112 extents
Oct 16 11:11:51 kili kernel: [ 1851.108771] BTRFS info (device sdb2): relocating block group 22020096 flags metadata
Oct 16 11:11:51 kili kernel: [ 1851.121789] BTRFS info (device sdb2): found 56 extents
Oct 16 11:11:51 kili kernel: [ 1851.124027] BTRFS info (device sdb2): relocating block group 13631488 flags data
Oct 16 11:11:51 kili kernel: [ 1851.168510] BTRFS info (device sdb2): found 8 extents
Oct 16 11:11:51 kili kernel: [ 1851.172121] BTRFS info (device sdb2): found 8 extents
Oct 16 11:11:51 kili kernel: [ 1851.174398] BTRFS info (device sdb2): relocating block group 5242880 flags metadata
Oct 16 11:11:51 kili kernel: [ 1851.121789] BTRFS info (device sdb2): found 56 extents
Oct 16 11:11:51 kili kernel: [ 1851.124027] BTRFS info (device sdb2): relocating block group 13631488 flags data
Oct 16 11:11:51 kili kernel: [ 1851.168510] BTRFS info (device sdb2): found 8 extents
Oct 16 11:11:51 kili kernel: [ 1851.172121] BTRFS info (device sdb2): found 8 extents
Oct 16 11:11:51 kili kernel: [ 1851.174398] BTRFS info (device sdb2): relocating block group 5242880 flags metadata
Oct 16 11:11:51 kili kernel: [ 1851.187164] BTRFS info (device sdb2): found 56 extents
Oct 16 11:11:51 kili kernel: [ 1851.193215] BTRFS info (device sdb2): relocating block group 1048576 flags system
Oct 16 11:11:51 kili kernel: [ 1851.198823] BTRFS info (device sdb2): found 1 extents
Oct 16 11:11:51 kili kernel: [ 1851.204977] BTRFS info (device sdb2): balance: ended with status: 0
Oct 16 11:11:51 kili kernel: [ 1851.368071] BTRFS info (device sdb2): balance: start -d -m -s
Oct 16 11:11:51 kili kernel: [ 1851.368236] BTRFS info (device sdb2): relocating block group 1431306240 flags system
Oct 16 11:11:51 kili kernel: [ 1851.374266] BTRFS info (device sdb2): relocating block group 1313865728 flags metadata
Oct 16 11:11:51 kili kernel: [ 1851.387652] BTRFS info (device sdb2): found 55 extents
Oct 16 11:11:51 kili kernel: [ 1851.393937] BTRFS info (device sdb2): relocating block group 1196425216 flags data
Oct 16 11:11:52 kili kernel: [ 1851.712119] BTRFS info (device sdb2): found 65 extents
Oct 16 11:11:52 kili kernel: [ 1851.721021] BTRFS info (device sdb2): found 65 extents
Oct 16 11:11:52 kili kernel: [ 1851.727236] BTRFS info (device sdb2): 4 enospc errors during balance
Oct 16 11:11:52 kili kernel: [ 1851.727238] BTRFS info (device sdb2): balance: ended with status: -28
Oct 16 11:11:52 kili systemd[1894]: home-ubuntu-autotest-client-tmp-tmp-xfstests\x2dtest.mount: Succeeded.
Oct 16 11:11:52 kili systemd[1]: home-ubuntu-autotest-client-tmp-tmp-xfstests\x2dtest.mount: Succeeded.
Oct 16 11:11:52 kili systemd[1]: home-ubuntu-autotest-client-tmp-tmp-xfstests\x2dscratch.mount: Succeeded.
Oct 16 11:11:52 kili systemd[1894]: home-ubuntu-autotest-client-tmp-tmp-xfstests\x2dscratch.mount: Succeeded.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-31-generic 5.0.0-31.33
ProcVersionSignature: User Name 5.0.0-31.33-generic 5.0.21
Uname: Linux 5.0.0-31-generic x86_64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 1 Oct 16 10:41 seq
 crw-rw---- 1 root audio 116, 33 Oct 16 10:41 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Thu Oct 17 03:16:09 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
MachineType: Intel Corporation S2600WTT
PciMultimedia:

ProcFB: 0 mgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-31-generic root=UUID=72dbdd83-0e2a-4fdd-99ca-70869e30b925 ro
RelatedPackageVersions:
 linux-restricted-modules-5.0.0-31-generic N/A
 linux-backports-modules-5.0.0-31-generic N/A
 linux-firmware 1.178.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/19/2015
dmi.bios.vendor: Intel Corporation
dmi.bios.version: SE5C610.86B.01.01.1008.031920151331
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: S2600WTT
dmi.board.vendor: Intel Corporation
dmi.board.version: G92187-350
dmi.chassis.asset.tag: ....................
dmi.chassis.type: 23
dmi.chassis.vendor: ...............................
dmi.chassis.version: ..................
dmi.modalias: dmi:bvnIntelCorporation:bvrSE5C610.86B.01.01.1008.031920151331:bd03/19/2015:svnIntelCorporation:pnS2600WTT:pvr....................:rvnIntelCorporation:rnS2600WTT:rvrG92187-350:cvn...............................:ct23:cvr..................:
dmi.product.family: Family
dmi.product.name: S2600WTT
dmi.product.sku: SKU Number
dmi.product.version: ....................
dmi.sys.vendor: Intel Corporation