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  • Latest Post - ‏2013-01-18T15:43:20Z by dlmcnabb
22 Posts

Pinned topic How long does mmchfs -V full take ?

‏2013-01-17T16:21:18Z |
I have a large (11 TB, 120M inodes) filesystem which is version 9.03 (, and am in the process of doing a rolling upgrade from v3.1 to 3.2, 3.3, etc..

Should we be doing the "mmchfs -V full" each time all nodes are on a new major release, or wait until we're at the final v3.4 or 3.5 version?

How long does a "mmchfs -V full " take? Is it a heavy I/O process?
Updated on 2013-01-18T15:43:20Z at 2013-01-18T15:43:20Z by dlmcnabb
  • dlmcnabb
    1012 Posts

    Re: How long does mmchfs -V full take ?

    All mmchfs -V full does is change a version number in the filesystem and broadcast it to all nodes that have the filesystem mounted.

    This version change will prevent nodes running older versions of code from mounting the filesystem because it allows features that have on-disk differences that the old code would not understand.