Once the OSTs are deactivated you should mount them as ldiskfs and copy out the last_rcvd, O/0/LAST_ID, and CONFIGS/mountdata files for safe keeping for when you want to add new OSTs. You can live without them, but it is easier to have them.
Cheers, Andreas On 2011-09-05, at 10:21 AM, Deon Borman <[email protected]> wrote: > Hi, > > I have some ageing hardware I'd like to remove. This includes the OSS > and the OSTs connected to it. > > So, as far as I understand, I need to deactivate the OSTs on the MDS > with `lctl --device <devno> deactivate`, copy out all the objects from > the deactivated OST with lfs_migrate and finally, permanently deactivate > the OSTs on all the clients and MDS with `lctl conf_param <OST > name>.osc.active=0`. Am I missing something, or is that it? > > Now for my real question: Once everything copied out, I'd like to > permanently switch off and re-purpose the hardware. Do I need to do > anything else, other than unmounting the OSTs and shutting down the OSS? > As far as I can tell, the MDS still knows about the this OSS and OSTs, > but will not try to use it. So will the removed OSS cause possible > issues in future? If so, how do I fix it. With a --writeconf on MDS/OSS? > > All this will happen on a Lustre 1.8.5 system. > > Thanks in advance, > Deon > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
