On Jul 29, 2008 14:36 -0400, Mark Seger wrote: > One thing that confuses me about lustre counters, and maybe others, is I > don't really know what they mean, when they change and in fact how to > stimulate them to change. For example, on my system I'm doing a watch > of /proc/fs/lustre/mdt/MDS/mds/stats and only see 1 reint counter, > because the others are all 0. So I went and did some file renames, and > chmods and sure enough, the other counters did appear. Cool!
Yes, this is expected. We dropped the "0" counters because they are very noisy and useless in most contexts. > The easiest thing for me to do is to simply say that reint_setattr > counts the number of setattrs, but that would be a pretty weak > definition. When I changed did a single chmod to 100 files, setattr only > incremented by 1 and I expected it to increment by 100. It should have been incremented by 100, and if it didn't it is possibly a bug. > want to be the one responsible for the words or all you're going to see > is 'reint_setattr counts the number of setattr calls' and I really don't > think that would be all that useful to anyone. "reint_setattr" includes all operations that modify inode attributes, including chmod, chown, touch, etc. >>>>> mds_reint_create 11018837 samples [reqs] 1 1 11018837 For mknod and mkdir operations, also used by NFS servers internally when creating files. >>>>> mds_reint_link 51315 samples [reqs] 1 1 51315 51315 For hard or symbolic links, like with "ln" >>>>> mds_reint_rename 224241 samples [reqs] 1 1 224241 224241 For file and directory renames, like with "mv". >>>>> mds_reint_unlink 13109877 samples [reqs] 1 1 13109877 For removing files and directories, like with "rm" or "rmdir". >>>>> mds_getxattr 36089 samples [usec] 9 8996 675208 252525110 For extended attributes and ACLs, like with "getfattr" or "getfacl". >>>>> mds_setxattr 1230 samples [usec] 123 10110 263367 For extended attributes and ACLs, like with "setfattr" or "setfacl". Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss