After running for a good long time with Lustre 1.8.4 everywhere on SL5
we are in the process of upgrading everywhere to SL6.4. We plan on
taking down our entire Lustre system at once, then bringing it back up
under SL6.4/Lustre 2.1.6. The process as documented in Chapter 16 of
the user's guide looks pretty straight forward. Are there any "gotchas"
I should know about? We are not planning on reformatting any file systems.
PS, apologies to whom it may concern that I originally sent this to