At 11/10/2016 03:40 PM, Кравцов Роман Владимирович wrote:
Hello.
We have two CI servers with Docker. Docker uses BTRFS storage driver,
also we use BTRFS for storing some data. To perform cloning of the data,
are used 'cp --reflink' command. When we trying to remove a few copies
of the cloned data, the ENOSPC error occurring. This error strongly
reproduced on the both servers. Before and after creation/deletion of
the data snapshot 'btrfs filesystem sync /var/lib/docker/db/STANDS' are
called.
This seems to be a known bug.
Would you please try the follow patch?
https://patchwork.kernel.org/patch/9319179/
Thanks,
Qu
[root@OraCI2 ~]# uname -a
Linux OraCI2.sigma-it.local 4.8.4-1.el7.elrepo.x86_64 #1 SMP Sat Oct 22
11:47:38 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@OraCI2 ~]# btrfs --version
btrfs-progs v4.8.1
[root@OraCI2 ~]# btrfs fi show
Label: 'BUILDS' uuid: ce8952ff-30e5-48c5-8cd2-529c95667aa8
Total devices 1 FS bytes used 358.66GiB
devid 1 size 1000.00GiB used 383.00GiB path /dev/nvme0n1p1
Label: none uuid: a712598d-cc4f-4dc5-bdfb-de7ae432b109
Total devices 1 FS bytes used 4.81TiB
devid 1 size 7.66TiB used 5.03TiB path
/dev/mapper/OraCI2-docker--data
Label: none uuid: 89c0495f-ed26-4d66-b83b-ffb5882bd082
Total devices 1 FS bytes used 880.43GiB
devid 1 size 1.93TiB used 913.01GiB path /dev/nvme0n1p2
[root@OraCI2 ~]# btrfs fi df /var/lib/docker/db/STANDS
Data, single: total=4.96TiB, used=4.79TiB
System, DUP: total=8.00MiB, used=608.00KiB
Metadata, DUP: total=35.00GiB, used=23.33GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
WBR,
Roman Kravtsov
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