On Jan 21, 2008 12:59 -0500, Aaron Knister wrote: > I have a client running 1.4.11 and i want to mount a filesystem that's > running on 1.6.4.1 servers. On the client I can ping the servers using > lctl however a mount fails with an LBUG on the mds. > > The mount command on the 1.4.11 client is -- > > mount -t lustre [EMAIL PROTECTED]:/data-mdtlov/client /mnt/lustre > > The error on the server is -- > > LustreError: 7369:0:(lov_obd.c:227:lov_connect()) ASSERTION(lov- > >lov_connects == 1) failed > LustreError: 7369:0:(tracefile.c:431:libcfs_assertion_failed()) LBUG > ll_mdt_24 R running task 0 7369 1 7370 7368 > (L-TLB) > ffff81026e92ddd0 ffff8102ba45045c ffff810418438dc0 ffff8102823e0200 > 0000000000000000 ffff810296765000 0000000000000000 ffff81041c2fd280 > ffffffff888c029f 0000000000000286 ffffffff8003cd0e ffff810418438140 > Call Trace: > [<ffffffff888c029f>] :mds:mds_handle+0xe7f/0x56ff > [<ffffffff8003cd0e>] lock_timer_base+0x1b/0x3c > [<ffffffff8001c1a2>] __mod_timer+0xb0/0xbe > [<ffffffff885dcfb0>] :obdclass:class_conn2export+0x250/0x2d0 > [<ffffffff8868e277>] :ptlrpc:ptlrpc_main+0x1437/0x1df0 > [<ffffffff800867b0>] default_wake_function+0x0/0xe > [<ffffffff8005bc25>] child_rip+0xa/0x11 > [<ffffffff8868ce40>] :ptlrpc:ptlrpc_main+0x0/0x1df0 > [<ffffffff8005bc1b>] child_rip+0x0/0x11 > > I thought 1.4 could mount a 1.6 filesystem.
Only if the filesystem was previously upgraded from a 1.4 system. If it was formatted as 1.6 initially there is no "downgrade" compatibility in the configuration logs. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
