kevin, brian, thanks to you both. i had a mkfs.lustre error, which after had been pointed out fixed the issue.
Brian J. Murrell wrote: > On Tue, 2008-11-25 at 20:45 +0000, neil rutter wrote: >> hi there, > > Hi, > >> i have an issue with failover of the MGS device within my cluster. >> >> i'm building a simple lustre environment; just one lustre file system >> (testfs) ... >> >> i have a two node cluster for my MGS/MDT; this is for an active/passive >> config with the MGS and MDT on different devices and mounted separately >> (not co-locating). >> >> i have a two node cluster for my OSTs, in an active/active config in >> that the first OST is on node one and the second OST is on node two. > > So you in fact have 4 nodes as your Lustre servers, yes? What is your > shared storage technology? How are the two OSSes accessing the same two > OSTs and how are the two MDSes accessing the single MDT and MGT? > >> if i have the above, then heartbeat is happy with the OSTs and the MDT >> mountpoints being mounted on either node in the cluster. the MGS however >> is not. i get the following message when it tries to mount on the >> alternative node: >> >> ---8<--- >> mount.lustre: mount /dev/sdb at /lustre/testfs/mgs failed: Invalid argument >> This may have multiple causes. >> Are the mount options correct? >> Check the syslog for more info. >> ---8<--- > > Is /dev/sdb actually accessible on the alternative node? What does > "cat /proc/partitions" say on that node? > > What does dmesg tell you after you try to mount /dev/sdb and it fails? > > b. > > > > ------------------------------------------------------------------------ > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
