On Apr 17, 2008 10:47 -0700, D. Marc Stearman wrote: > One of our production servers was created with 245M inodes, which > was enough at the time, but then we doubled the size of the file > system and are now running low on inodes (only 27M available), and > capacity-wise, we are only 60% full. We ran out of inodes once > already, and did a purge to reduce the number of filesystems. > > I would like to migrate all the data on the MDS to another lun on the > RAID controller. I can format a new file system with more inodes and > move all the data on the MDS to the new file system. > > Here is my question: What tools are safe to use to copy all the MDS > data? Are cp, tar, rsync, etc aware of all the EA data in ldiskfs? > Is there a lustre tool to copy all the information on the MDS over to > a new disk?
If you have a very recent (1.17 from FC8) it supports the --xattr option to copy EAs. Otherwise the recommended procedure is described in a KB article in bugzilla - a search for "backup & restore" gives bug 5716. Out of curiosity, how big is the MDS LUN, and how much free space is on the MDS? We could reduce the default bytes/inode on the MDS to avoid this problem in the future. On ZFS it will be a non-issue (dynamic inode allocation). 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
