If you are only changing the nid then you do not need to follow the full writeconf procedure.
See https://doc.lustre.org/lustre_manual.xhtml#lustremaint.changingservernid : If you need to change only the NID of the MDT or OST, the replace_nids command can simplify this process. The replace_nids command differs from tunefs.lustre --writeconf in that it does not erase the entire configuration log, precluding the need the need to execute the writeconf command on all servers and re-specify all permanent parameter settings. However, the writeconf command can still be used if desired. Note that you still need to unmount per the replace_nids procedure. -Cory On 11/16/22, 6:20 AM, "lustre-discuss" <[email protected]> wrote: Hi, We want to change the service node of an OST. We think this involves: 1. umount the OST 2. tunefs.lustre --erase-param failover.node --servicenode=172.18.100.1@o2ib,172.17.100.1@tcp pool1/ost1 Is this all? Unclear from the documentation whether a writeconf is required (if it is, then we'd need to dismount the whole file system, and take it all down, and writeconf every ost/mdt/mgt and then mount them in order). Thanks, Alastair. _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org<http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org>
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