[Gluster-users] [Nfs-ganesha-devel] Questions on ganesha HA and shared storage size
Alessandro De Salvo
Alessandro.DeSalvo at roma1.infn.it
Mon Jun 15 12:21:42 UTC 2015
Hi,
any news on this? Did you have the chance to look into that?
I'd also be curious to know if anyone tried nfs ganesha on CentOS 7.1
and if it was really working, as I also tried on a standalone, clean
machine, and I see the very same behavior, even without gluster.
Thanks,
Alessandro
On Fri, 2015-06-12 at 14:34 +0200, Alessandro De Salvo wrote:
> Hi,
> looking at the code and having recompiled adding some more debug, I
> might be wrong, but it seems that in nfs_rpc_dispatcher_thread.c,
> fuction nfs_rpc_dequeue_req, the threads enter the while (!(wqe->flags &
> Wqe_LFlag_SyncDone)) and never exit from there.
> I do not know if it's normal or not as I should read better the code.
> Cheers,
>
> Alessandro
>
> On Fri, 2015-06-12 at 09:35 +0200, Alessandro De Salvo wrote:
> > Hi Malahal,
> >
> >
> > > Il giorno 12/giu/2015, alle ore 01:23, Malahal Naineni <malahal at us.ibm.com> ha scritto:
> > >
> > > The logs indicate that ganesha was started successfully without any
> > > exports. gstack output seemed normal as well -- threads were waiting to
> > > serve requests.
> >
> > Yes, no exports as it was the default config before enabling Ganesha on any gluster volume.
> >
> > >
> > > Assuming that you are running "showmount -e" on the same system, there
> > > shouldn't be any firewall coming into the picture.
> >
> > Yes it was the case in my last attempt, from the same machine. I also tried from another machine, but the result was the same. The firewall (firewalld, as it's a CentOS 7.1) is disabled anyways.
> >
> > > If you are running
> > > "showmount" from some other system, make sure there is no firewall
> > > dropping the packets.
> > >
> > > I think you need tcpdump trace to figure out the problem. My wireshark
> > > trace showed two requests from the client to complete the "showmount -e"
> > > command:
> > >
> > > 1. Client sent "GETPORT" call to port 111 (rpcbind) to get the port number
> > > of MOUNT.
> > > 2. Then it sent "EXPORT" call to mountd port (port it got in response to #1).
> >
> > Yes, I did it already, and indeed it showed the two requests, so the portmapper works fine, but it hangs on the second request.
> > Also "rpcinfo -t localhost portmapper" returns successfully, while "rpcinfo -t localhost nfs" hangs.
> > The output of rpcinfo -p is the following:
> >
> > program vers proto port service
> > 100000 4 tcp 111 portmapper
> > 100000 3 tcp 111 portmapper
> > 100000 2 tcp 111 portmapper
> > 100000 4 udp 111 portmapper
> > 100000 3 udp 111 portmapper
> > 100000 2 udp 111 portmapper
> > 100024 1 udp 56082 status
> > 100024 1 tcp 41858 status
> > 100003 3 udp 2049 nfs
> > 100003 3 tcp 2049 nfs
> > 100003 4 udp 2049 nfs
> > 100003 4 tcp 2049 nfs
> > 100005 1 udp 45611 mountd
> > 100005 1 tcp 55915 mountd
> > 100005 3 udp 45611 mountd
> > 100005 3 tcp 55915 mountd
> > 100021 4 udp 48775 nlockmgr
> > 100021 4 tcp 51621 nlockmgr
> > 100011 1 udp 4501 rquotad
> > 100011 1 tcp 4501 rquotad
> > 100011 2 udp 4501 rquotad
> > 100011 2 tcp 4501 rquotad
> >
> > >
> > > What does "rpcinfo -p <server-ip>" show?
> > >
> > > Do you have selinux enabled? I am not sure if that is playing any role
> > > here...
> >
> > Nope, it's disabled:
> >
> > # uname -a
> > Linux node2 3.10.0-229.4.2.el7.x86_64 #1 SMP Wed May 13 10:06:09 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
> >
> >
> > Thanks for the help,
> >
> > Alessandro
> >
> > >
> > > Regards, Malahal.
> > >
> > > Alessandro De Salvo [Alessandro.DeSalvo at roma1.infn.it] wrote:
> > >> Hi,
> > >> this was an extract from the old logs, before Soumya's suggestion of
> > >> changing the rquota port in the conf file. The new logs are attached
> > >> (ganesha-20150611.log.gz) as well as the gstack of the ganesha process
> > >> while I was executing the hanging showmount
> > >> (ganesha-20150611.gstack.gz).
> > >> Thanks,
> > >>
> > >> Alessandro
> > >>
> > >>
> > >>
> > >>> On Thu, 2015-06-11 at 11:37 -0500, Malahal Naineni wrote:
> > >>> 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.
> > >>>
> > >>>> 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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>
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