Hi, Re-send to the proper (I hope) email list.
Megan ---------- Forwarded message ---------- From: Ms. Megan Larko <[email protected]> Date: Wed, Sep 19, 2012 at 4:24 PM Subject: Lustre Interoperability Question To: [email protected] Hello List! I am looking for clarification on a Lustre interoperability question. There is a system currently running RHEL 5.5 and Lustre 1.8.3 to which new hardware would like to be added. The new hardware is not supported under RHEL 5.x so it needs to be installed as RHEL 6.2 as a minimum. There is considerable doubt that one section of the old hardware will be able to function under RHEL 6. A version of the Lustre Manual for 2.0 ( http://wiki.lustre.org/manual/LustreManual20_HTML/UpgradingLustre.html ) Section 16.1 indicates the possibility of heterogenous Luster servers---specifically mixed 1.8 and 2.0 servers. Section 16.1 goes on to state that Lustre 1.8.4 must be on the client and server nodes not upgraded to 2.0. Further research on this issue led me to Whamcloud LU-1116 ( http://jira.whamcloud.com/browse/LU-1116 ) in which a bug (actually a linux kernel item name change) indicates that for a RHEL 6.2 client to support 1.8 Lustre (and 2.0 Lustre) the clients minimum Lustre version must be 1.8.7 (patched) or 1.8.8 (where the patch is landed). The Question: Can Lustre effectively serve a file system with heterogenous servers of RHEL 5.5 (1.8.3) and RHEL 6.2 (2.1 or better)? If not, would a solution of RHEL 5.5 with an upgrade from 1.8.3 to 1.8.8 function with the new hardware using RHEL 6.2 (either Lustre 1.8.8 or 2)? Do the clients have to run Lustre 1.8.8 at a minimum? All guidance and suggestions are appreciated. Cheers! Megan Larko _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
