On 02.02.2011 18:15, Bob Ball wrote: > Is there a recommended way to migrate an MDT (MGS is separate) volume > from one location to another on the same server? This uses iSCSI volumes. > > Lustre 1.8.4 >
We'll try the copy (DRBD) + resize variant soon. I've tried that with a backup copy of the MDT up to the stage where I had mounted the MDT disk and then would need a network connection to the MGS - with the production system running, I couldn't test that. Copying via tar never succeeded in our system - I think because of limits in tar. But I tried to copy via rsync: takes weeks! Neither the amount of bytes to be transfered (45 GB) nor the network bandwidth (10 Gb) is an issues, but we have 110 mio inodes in use, so rsync probably takes its time to go through all these (sparse) files. Consequently, there can be no lengthy first copy from a backup and a quick final sync while Lustre has been taken down - that step would last just as long. Regards, Thomas _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
