I found today that a very large number of nodes who are lustre clients show ptlrpcd taking 100% cpu and the lustre mount is completely unavailable! I have attached the output of ''lctl dk /tmp/data'' to this message. Any insight would be helpful. I am afraid though that this with the problem of clients being evicted all the time, that our evaluation of lustre will end, and we will not be using it in the future :-( When it works it works great, but to our group we can not deal with how unstable it is. We will try lustre again when it hits version 2.0 (running 1.6.4.1 right now with patchless clients). Thanks for all the help you have given us while we have been evaluating it! -------------- next part -------------- A non-text attachment was scrubbed... Name: data Type: application/octet-stream Size: 7186 bytes Desc: not available Url : http://lists.lustre.org/pipermail/lustre-discuss/attachments/20080324/6ab885e0/attachment-0002.obj -------------- next part -------------- Brock Palen www.umich.edu/~brockp Center for Advanced Computing brockp at umich.edu (734)936-1985