> Op 27 oktober 2017 om 14:22 schreef Félix Barbeira <fbarbeira@xxxxxxxxx>: > > > Hi, > > I'm trying to configure a ceph cluster using IPv6 only but I can't enable > jumbo frames. I made the definition on the > 'interfaces' file and it seems like the value is applied but when I test it > looks like only works on IPv4, not IPv6. > > It works on IPv4: > > root@ceph-node01:~# ping -c 3 -M do -s 8972 ceph-node02 > > PING ceph-node02 (x.x.x.x) 8972(9000) bytes of data. > 8980 bytes from ceph-node02 (x.x.x.x): icmp_seq=1 ttl=64 time=0.474 ms > 8980 bytes from ceph-node02 (x.x.x.x): icmp_seq=2 ttl=64 time=0.254 ms > 8980 bytes from ceph-node02 (x.x.x.x): icmp_seq=3 ttl=64 time=0.288 ms > Verify with Wireshark/tcpdump if it really sends 9k packets. I doubt it. > --- ceph-node02 ping statistics --- > 3 packets transmitted, 3 received, 0% packet loss, time 2000ms > rtt min/avg/max/mdev = 0.254/0.338/0.474/0.099 ms > > root@ceph-node01:~# > > But *not* in IPv6: > > root@ceph-node01:~# ping6 -c 3 -M do -s 8972 ceph-node02 > PING ceph-node02(x:x:x:x:x:x:x:x) 8972 data bytes > ping: local error: Message too long, mtu=1500 > ping: local error: Message too long, mtu=1500 > ping: local error: Message too long, mtu=1500 > Like Ronny already mentioned, check the switches and the receiver. There is a 1500 MTU somewhere configured. Wido > --- ceph-node02 ping statistics --- > 4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3024ms > > root@ceph-node01:~# > > > > root@ceph-node01:~# ifconfig > eno1 Link encap:Ethernet HWaddr 24:6e:96:05:55:f8 > inet6 addr: 2a02:x:x:x:x:x:x:x/64 Scope:Global > inet6 addr: fe80::266e:96ff:fe05:55f8/64 Scope:Link > UP BROADCAST RUNNING MULTICAST *MTU:9000* Metric:1 > RX packets:633318 errors:0 dropped:0 overruns:0 frame:0 > TX packets:649607 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:463355602 (463.3 MB) TX bytes:498891771 (498.8 MB) > > lo Link encap:Local Loopback > inet addr:127.0.0.1 Mask:255.0.0.0 > inet6 addr: ::1/128 Scope:Host > UP LOOPBACK RUNNING MTU:65536 Metric:1 > RX packets:127420 errors:0 dropped:0 overruns:0 frame:0 > TX packets:127420 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1 > RX bytes:179470326 (179.4 MB) TX bytes:179470326 (179.4 MB) > > root@ceph-node01:~# > > root@ceph-node01:~# cat /etc/network/interfaces > # This file describes network interfaces avaiulable on your system > # and how to activate them. For more information, see interfaces(5). > > source /etc/network/interfaces.d/* > > # The loopback network interface > auto lo > iface lo inet loopback > > # The primary network interface > auto eno1 > iface eno1 inet6 auto > post-up ifconfig eno1 mtu 9000 > root@ceph-node01:# > > > Please help! > > -- > Félix Barbeira. > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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