[Gluster-users] [Nfs-ganesha-devel] Questions on ganesha HA and shared storage size

[Frank Filz]

> Soumya Koduri [skoduri at redhat.com] wrote:
> > CCin ganesha-devel to get more inputs.
> >
> > In case of ipv6 enabled, only v6 interfaces are used by NFS-Ganesha.
> 
> I am not a network expert but I have seen IPv4 traffic over IPv6 interface
> while fixing few things before. This may be normal.

IPv6 can encapsulate IPv4 traffic. In my testing I use IPv4 addresses, but
they are encapsulated in IPv6 (and thus forced me to get Ganesha's support
for that to actually work...).

> > commit - git show 'd7e8f255' , which got added in v2.2 has more details.
> >
> >  > # netstat -ltaupn | grep 2049
> >  > tcp6       4      0 :::2049                 :::*
> >  > LISTEN      32080/ganesha.nfsd
> >  > tcp6       1      0 x.x.x.2:2049      x.x.x.2:33285     CLOSE_WAIT
> >  > -
> >  > tcp6       1      0 127.0.0.1:2049          127.0.0.1:39555
> >  > CLOSE_WAIT  -
> >  > udp6       0      0 :::2049                 :::*
> >  > 32080/ganesha.nfsd
> >  >
> >
> > >>> I have enabled the full debug already, but I see nothing special.
Before
> exporting any volume the log shows no error, even when I do a showmount
> (the log is attached, ganesha.log.gz). If I do the same after exporting a
> volume nfs-ganesha does not even start, complaining for not being able to
> bind the IPv6 ruota socket, but in fact there is nothing listening on
IPv6, so it
> should not happen:
> > >>>
> > >>> tcp6       0      0 :::111                  :::*
LISTEN      7433/rpcbind
> > >>> tcp6       0      0 :::2224                 :::*
LISTEN      9054/ruby
> > >>> tcp6       0      0 :::22                   :::*
LISTEN      1248/sshd
> > >>> udp6       0      0 :::111                  :::*
7433/rpcbind
> > >>> udp6       0      0 fe80::8c2:27ff:fef2:123 :::*
31238/ntpd
> > >>> udp6       0      0 fe80::230:48ff:fed2:123 :::*
31238/ntpd
> > >>> udp6       0      0 fe80::230:48ff:fed2:123 :::*
31238/ntpd
> > >>> udp6       0      0 fe80::230:48ff:fed2:123 :::*
31238/ntpd
> > >>> udp6       0      0 ::1:123                 :::*
31238/ntpd
> > >>> udp6       0      0 fe80::5484:7aff:fef:123 :::*
31238/ntpd
> > >>> udp6       0      0 :::123                  :::*
31238/ntpd
> > >>> udp6       0      0 :::824                  :::*
7433/rpcbind
> > >>>
> > >>> The error, as shown in the attached ganesha-after-export.log.gz
> logfile, is the following:
> > >>>
> > >>>
> > >>> 10/06/2015 02:07:47 : epoch 55777fb5 : node2 :
> > >>> ganesha.nfsd-26195[main] Bind_sockets_V6 :DISP :WARN :Cannot
> bind
> > >>> RQUOTA tcp6 socket, error 98 (Address already in use)
> > >>> 10/06/2015 02:07:47 : epoch 55777fb5 : node2 : ganesha.nfsd-
> 26195[main] Bind_sockets :DISP :FATAL :Error binding to V6 interface.
Cannot
> continue.
> > >>> 10/06/2015 02:07:48 : epoch 55777fb5 : node2 :
> > >>> ganesha.nfsd-26195[main] glusterfs_unload :FSAL :DEBUG :FSAL
> > >>> Gluster unloaded
> > >>>
> 
> The above messages indicate that someone tried to restart ganesha. But
> ganesha failed to come up because RQUOTA port (default is 875) is already
in
> use by an old ganesha instance or some other program holding it. The new
> instance of ganesha will die, but if you are using systemd, it will try to
restart
> automatically. We have disabled systemd auto restart in our environment as
> it was causing issues for debugging.
> 
> What version of ganesha is this?
> 
> Regards, Malahal.
> 
> 
>
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