[ovs-discuss] Subject: [openvswitch 2.7.1] testsuite: 7 8 767 1891 1892 1893 1894 1895 1896 1900 1902 failed

[Lance Richardson]

> From: "Lance Richardson" <lrichard at redhat.com>
> To: "Ben Pfaff" <blp at ovn.org>
> Cc: developer at it-offshore.co.uk, bugs at openvswitch.org
> Sent: Thursday, 13 July, 2017 8:12:30 PM
> Subject: Re: [ovs-discuss] Subject: [openvswitch 2.7.1] testsuite: 7 8 767 1891 1892 1893 1894 1895 1896 1900 1902
> failed
> 
> > From: "Ben Pfaff" <blp at ovn.org>
> > To: "Lance Richardson" <lrichard at redhat.com>
> > Cc: developer at it-offshore.co.uk, bugs at openvswitch.org
> > Sent: Thursday, 13 July, 2017 7:46:13 PM
> > Subject: Re: [ovs-discuss] Subject: [openvswitch 2.7.1] testsuite: 7 8 767
> > 1891 1892 1893 1894 1895 1896 1900 1902
> > failed
> > 
> > On Mon, Jul 10, 2017 at 01:14:38PM -0400, Lance Richardson wrote:
> > > > From: "Stuart Cardall" <developer at it-offshore.co.uk>
> > > > To: bugs at openvswitch.org
> > > > Sent: Saturday, 8 July, 2017 5:22:17 PM
> > > > Subject: [ovs-discuss] Subject: [openvswitch 2.7.1] testsuite: 7 8 767
> > > > 1891 1892 1893 1894 1895 1896 1900 1902 failed
> > > > 
> > > > 
> > > > 
> > > > Hello,
> > > > 
> > > > Attached is the test suite log for ovs 2.7.1 in Alpine Linux / musl c:
> > > > 
> > > > testsuite: 7 8 767 1891 1892 1893 1894 1895 1896 1900 1902 failed
> > > > 
> > > > 
> > > > Kind Regards,
> > > > 
> > > > Stuart Cardall.
> > > > 
> > > 
> > > These will pass if GNU awk is used instead of busybox awk (apk add gawk).
> > > 
> > >    7: completion.at:343  vsctl-bashcomp - basic verification
> > >    8: completion.at:425  vsctl-bashcomp - argument completion
> > 
> > That's interesting.  I thought I'd try to figure out the root of the
> > problem, but I don't get failures in my usual environment if I replace
> > "awk" by "busybox awk" and run these tests, so I wonder whether there's
> > something else at play.
> > 
> 
> I just tried that (s/awk/busybox awk/ in utilities/ovs-vsctl-bashcomp.bash)
> and got failures in those tests with similar symptom (no completions given).
> 
> This was on F26, x86_64, with busybox-1.22.1-6.
> 
> Strange... no idea. I did find a nice wiki explaining some differences
> between
> busybox awk and some other implementations:
> 
>     https://wiki.alpinelinux.org/wiki/Awk
> 

One more tidbit... if I use busybox awk here, I get failures, otherwise I
don't (the other invocations of awk in this script work either way):

# This is a convenience function to make sure that user input is
# looked at as a fixed string when being compared to something.  $1 is
# the input; this behaves like 'grep "^$1"' but deals with regex
# metacharacters in $1.
_ovs_vsctl_check_startswith_string () {
    awk 'index($0, thearg)==1' thearg="$1"
}

The extent of my awk knowledge is knowing where the name comes from, so
I have no idea what might causing the problem here or what alternative
implementations might be worth trying...

Regards,

   Lance