Andreas: Thanks for taking a look at this. Unfortunately, I don't quite understand the guidance you present: "If you are seeing 'this' problem....". I haven't seen 'any' problems pertaining to >8tb yet, so I cannot place your guidance in the context of the question I posted.
My question was whether or not I need this parameter on the MDS and if so, how to apply it retroactively. The Lustre environment I installed was the 1.8.5 set. Any insight in the issues would be appreciated. Theo On 7/14/2011 1:41 PM, Andreas Dilger wrote: > If you are seeing this problem it means you are using the ext3-based ldiskfs. > Go back to the download site and get the lustre-ldiskfs and lustre-modules > RPMs with ext4 in the name. > > That is the code that was tested with LUNs over 8TB. We kept these separate > for some time to reduce risk for users that did not need larger LUN sizes. > This is the default for the recent Whamcloud 1.8.6 release. > > Cheers, Andreas > > On 2011-07-14, at 11:15 AM, Theodore Omtzigt<t...@stillwater-sc.com> wrote: > >> I configured a Lustre file system on a collection of storage servers >> that have 12TB raw devices. I configured a combined MGS/MDS with the >> default configuration. On the OSTs however I added the force_over_8tb to >> the mountfsoptions. >> >> Two part question: >> 1- do I need to set that parameter on the MGS/MDS server as well >> 2- if yes, how do I properly add this parameter on this running Lustre >> file system (100TB on 9 storage servers) >> >> I can't resolve the ambiguity in the documentation as I can't find a >> good explanation of the configuration log mechanism that is being >> referenced in the man pages. The fact that the doc for --writeconf >> states "This is very dangerous", I am hesitant to pull the trigger as >> there is 60TB of data on this file system that I rather not lose. >> _______________________________________________ >> Lustre-discuss mailing list >> Lustre-discuss@lists.lustre.org >> http://lists.lustre.org/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss
