auplink spam in docker unit log

[Robert Collins]

Oct 06 14:48:13 linux-dev docker[1317]: time="2016-10-06T14:48:13.909019154+13:00" level=error msg="Couldn't run auplink before unmount /var/lib/docker/tmp/docker-aufs-union929083141: exec: \"auplink\": executable file not found in $PATH"
Oct 06 14:48:29 linux-dev docker[1317]: time="2016-10-06T14:48:29.216164082+13:00" level=error msg="Couldn't run auplink before unmount /var/lib/docker/aufs/mnt/6d15156cb4338d7264b7cb3d9404c99c860b897381837eaa498813e1b9ffc710-init: exec: \"auplink\": executable file not found in $PATH"

If this is harmless, it would be good to stop docker trying to run it. If its not, please depend on auplink so that it is installed automatically!

[Tianon Gravi (tianon)]

It should already be in either recommends or suggests (can't remember
which).

IMO "depends" is inappropriate because it's only required if your kernel
both supports AUFS and it's configured or chosen as your graph driver.
BTRFS, overlayfs, and even ZFS are also supported, for example.

[Robert Collins (lifeless)]

It is in suggests. This means that the default behaviour - the happy path - for users is poor. Ubuntu's kernels support aufs, and aufs is the default graph driver.

At a minimum I'd suggest recommends.

But aufs-tools is a) tiny - Installed-Size: 228 and b) has no further deps (other than libc) - so while you're abstractly correct its a correctness that isn't IMO helpful.

[Christian Ehrhardt  (paelzer)]

I'd agree that a recommends wouldn't hurt in that case.
Especially since it would not be a component mismatch - both are in universe.

@Tianon/Mwhudson what do you think?

[Michael Hudson-Doyle (mwhudson)]

Recommends makes sense to me I think.

On 11 October 2016 at 01:54, ChristianEhrhardt <email address hidden>
wrote:

> I'd agree that a recommends wouldn't hurt in that case.
> Especially since it would not be a component mismatch - both are in
> universe.
>
> @Tianon/Mwhudson what do you think?
>
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[Tianon Gravi (tianon)]

Yeah, I think in Ubuntu changing that to "Recommends" is sensible.

- Tianon

[Robie Basak (racb)]

Tianon thinks it's reasonable? Status -> Triaged :-)