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Tasklist

FS#56050 - [docker] Prevent overlay2 mount errors in combination with 4.13 kernel

Attached to Project: Community Packages
Opened by Markus Doits (doits) - Thursday, 19 October 2017, 17:12 GMT
Last edited by Sébastien Luttringer (seblu) - Friday, 29 December 2017, 12:47 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Sébastien Luttringer (seblu)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

There is a bug in current docker versions (currently 1:17.10.0-1) that sometimes this errors happens:

error creating overlay mount to /var/lib/docker/overlay2/ID/merged: device or resource busy

As per https://github.com/moby/moby/issues/34672 this is a bug triggered by the 4.13 kernel which was silently ignored before (read bug report for more information).

There is a patch available which seems to address the issue (verified by me by running multiple docker images without an error): https://github.com/moby/moby/pull/34948

Until it is merged or the kernel regression is fixed, it might be a good idea to implement this patch by ourselves in arch to fix the nasty error.

I simply downloaded the patch (https://patch-diff.githubusercontent.com/raw/moby/moby/pull/34948.diff) and updated the PKGBUILD:

prepare() {
pushd $srcdir/docker-ce/components/engine/
patch -Np1 -i "${srcdir}/../34948.diff"
popd
}

This can be removed when either https://github.com/moby/moby/pull/34948 is merged or upstream kernel is fixed.
This task depends upon

Closed by  Sébastien Luttringer (seblu)
Friday, 29 December 2017, 12:47 GMT
Reason for closing:  Upstream
Additional comments about closing:  17.12
Comment by Markus Doits (doits) - Sunday, 10 December 2017, 21:29 GMT
  • Field changed: Percent Complete (100% → 0%)
Unfortunately this is still not fixed in docker 17.11 and kernel 4.14.4-1-ARCH.

17.11 does not have this patch applied (https://github.com/docker/docker-ce/blob/17.11/components/engine/daemon/graphdriver/overlay2/overlay.go), but 17.12 has it looks like (https://github.com/docker/docker-ce/blob/17.12/components/engine/daemon/graphdriver/overlay2/overlay.go)
Comment by Markus Doits (doits) - Sunday, 10 December 2017, 21:34 GMT
Here's a diff that applies on 17.11 to fix this issue (had to slightly modify it).
   34948.diff (11.5 KiB)

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