* Re: [dpdk-ci] Meson failing on master
2019-12-04 15:01 ` Jeremy Plsek
@ 2019-12-04 15:09 ` Richardson, Bruce
0 siblings, 0 replies; 3+ messages in thread
From: Richardson, Bruce @ 2019-12-04 15:09 UTC (permalink / raw)
To: Jeremy Plsek, David Marchand; +Cc: ci, Aaron Conole
> -----Original Message-----
> From: Jeremy Plsek <jplsek@iol.unh.edu>
> Sent: Wednesday, December 4, 2019 3:01 PM
> To: David Marchand <david.marchand@redhat.com>
> Cc: ci@dpdk.org; Richardson, Bruce <bruce.richardson@intel.com>; Aaron
> Conole <aconole@redhat.com>
> Subject: Re: Meson failing on master
>
> On Wed, Dec 4, 2019 at 6:09 AM David Marchand <david.marchand@redhat.com>
> wrote:
> >
> > Hello Jeremy,
> >
> > I noticed that meson is failing for a patch on master.
> > Example: https://lab.dpdk.org/results/dashboard/patchsets/8804/
> >
> > The artifact gives the non-obvious (to me) error log:
> >
> > Build targets in project: 810
> > Option default_library is: shared [default: static] Found ninja-1.8.2
> > at /usr/bin/ninja
> > ninja: error: manifest 'build.ninja' still dirty after 100 tries
> >
> > [1] Error running command.
> >
> > Talked to Bruce, and he suspects something on the filesystem level.
> > Is this issue happening on a system with the overlayfs stuff you
> mentioned?
> >
>
> Hi David,
>
> This started happening last week as well
> (https://lab.dpdk.org/results/dashboard/patchsets/8711/), so I disabled it
> temporarily.
> I enabled it yesterday, and it was fine for a few patch sets
> (https://lab.dpdk.org/results/dashboard/patchsets/8803/), but, as you
> mentioned, it broke again. I've disabled it again for future tests until
> it can be resolved.
>
> This is not related to overlayfs work I've been working on (the overlayfs
> work was for the bare metal machines). These tests run in a container,
> using podman, with a mount to the jenkins workspace. The containers run on
> a no-so-special Ubuntu 18.04 VM.
>
> I've noticed similar issues for other CI (https://github.com/ninja-
> build/ninja/issues/1599,
> https://github.com/neovim/neovim/issues/10213), which, for the most part,
> wasn't really resolved or gave a solution, and may not be related to our
> issue.
>
> Hmmm... I was able to reproduce it with the tarball that "failed" most
> recently (ps 8804), but it passed with the older "failed" tarball (ps
> 8711). The difference between them that I noticed, was that when
> untarring, it (ps 8804) would complain that the date was in the future.
>
> $ date
> Wed Dec 4 14:28:18 UTC 2019
> $ ls -l --full-time
> ...
> -rw-rw-r-- 1 jenkins-local jenkins-local 12 2019-12-04
> 15:03:12.000000000 +0000 VERSION
>
> I tried to just update the files to the current time...
>
> $ find . -exec touch {} +
>
> And now it compiles... Hmmm... Yes, it seems that causes it? Updating the
> date fixed it? Interesting bug.
>
> So there are a few issues to look into:
> 1. Why the dates in the tarball are wrong in the first place (my issue. or
> just add a dirty fix to the compile script to just update the date after
> extracting) 2. Why the date of the file matters so much in meson/ninja (I
> understand that build systems typically use the date to check whether to
> recompile a file, but it should be more graceful about handling this type
> of in-the-future problem)
>
> I'll see if I can make a simple example and maybe make a bug report.
> (At the minimum meson/ninja should fail gracefully rather than retry
> 100 times.)
>
Interesting.
Could this be due to people sending patches from machines with incorrect date/time settings on them? The headers for that particular patch are below:
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Cheng Jiang <Cheng1.jiang@intel.com>
Date: Wed, 4 Dec 2019 15:03:12 +0000
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I notice, for example that the patch date is "4 Dec 2019 15:03:12 +0000", while it was received on "4 Dec 2019 08:26:33 +0100". Therefore, this is a patch from the future. This would also explain why you get passed now with the older failing tarball as it's no longer from the future, meaning any files it changes will be older than the build.ninja file generated by meson.
Regards,
/Bruce
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