Megan, lnet pings aren't the same as tcpip/udp pings. An lnet ping 'lctl ping' would need to touch an active lnet instance on the target address. I don't think you can bind lnet to a pacemaker virtual IP but I'll let someone smarter than me on this list confirm or correct me.
In any event an lnet ping and udp ping are completely separate animals. --Jeff Sent from my iPhone On Nov 1, 2012, at 21:04, "Ms. Megan Larko" <dobsonu...@gmail.com> wrote: > Greetings! > > I am working with Lustre-2.1.2 on RHEL 6.2. First I configured it > using the standard defaults over TCP/IP. Everything worked very > nicely usnig a real, static --mgsnode=a.b.c.x value which was the > actual IP of the MGS/MDS system1 node. > > I am now trying to integrate it with Pacemaker-1.1.7. I believe I > have most of the set-up completed with a particular exception. The > "lctl ping" command cannot ping the pacemaker IP alias (say a.b.c.d). > The generic ping command in RHEL 6.2 can successfully access the > interface. The Pacemaker alias IP (for failover of the combnied > MGSMDS node with Fibre Channel multipath storage shared between both > MGS/MDS-configured machines) works in and of itself. I tested with > an apache service. The Pacemaker will correctly fail over the > MGS/MDS from system1 to system2 properly. If I go to system2 then my > Lustre file system stops because it cannot get to the alias IP number. > > I did configure the lustre OSTs to use --mgsnode=a.b.c.d (a.b.c.d > representing my Pacemaker IP alias). A tunefs.lustre confirms the > alias IP number. The alias IP number does not appear in LNET (lctl > list_nids), and "lctl ping a.b.c.d" fails. > > Should this IP alias go into the LNET data base? If yes, how? What > steps should I take to generate a successful "lctl ping a.b.c.d"? > > Thanks for reading! > Cheers, > megan > _______________________________________________ > Lustre-discuss mailing list > Lustre-discuss@lists.lustre.org > http://lists.lustre.org/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss