[Gluster-devel] [Gluster-infra] is_nfs_export_available from nfs.rc failing too often?

[Michael Scherer]

Le mercredi 03 avril 2019 à 15:12 +0300, Yaniv Kaul a écrit :
> On Wed, Apr 3, 2019 at 2:53 PM Michael Scherer <mscherer at redhat.com>
> wrote:
> 
> > Le mercredi 03 avril 2019 à 16:30 +0530, Atin Mukherjee a écrit :
> > > On Wed, Apr 3, 2019 at 11:56 AM Jiffin Thottan <
> > > jthottan at redhat.com>
> > > wrote:
> > > 
> > > > Hi,
> > > > 
> > > > is_nfs_export_available is just a wrapper around "showmount"
> > > > command AFAIR.
> > > > I saw following messages in console output.
> > > >  mount.nfs: rpc.statd is not running but is required for remote
> > > > locking.
> > > > 05:06:55 mount.nfs: Either use '-o nolock' to keep locks local,
> > > > or
> > > > start
> > > > statd.
> > > > 05:06:55 mount.nfs: an incorrect mount option was specified
> > > > 
> > > > For me it looks rpcbind may not be running on the machine.
> > > > Usually rpcbind starts automatically on machines, don't know
> > > > whether it
> > > > can happen or not.
> > > > 
> > > 
> > > That's precisely what the question is. Why suddenly we're seeing
> > > this
> > > happening too frequently. Today I saw atleast 4 to 5 such
> > > failures
> > > already.
> > > 
> > > Deepshika - Can you please help in inspecting this?
> > 
> > So in the past, this kind of stuff did happen with ipv6, so this
> > could
> > be a change on AWS and/or a upgrade.
> > 
> 
> We need to enable IPv6, for two reasons:
> 1. IPv6 is common these days, even if we don't test with it, it
> should be
> there.
> 2. We should test with IPv6...
> 
> I'm not sure, but I suspect we do disable IPv6 here and there.
> Example[1].
> Y.
> 
> [1]
> 
https://github.com/gluster/centosci/blob/master/jobs/scripts/glusto/setup-glusto.yml

We do disable ipv6 for sure, Nigel spent 3 days just on that for the
AWS migration, and we do have a dedicated playbook applied on all
builders that try to disable everything in every possible way:


https://github.com/gluster/gluster.org_ansible_configuration/blob/master/roles/jenkins_builder/tasks/disable_ipv6_linux.yml

According to the comment, that's from 2016, and I am sure this go
further in the past since it wasn't just documented before.


-- 
Michael Scherer
Sysadmin, Community Infrastructure and Platform, OSAS


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