[slurm-users] Slurm reservation for migrating user home directories

Ole Holm Nielsen Ole.H.Nielsen at fysik.dtu.dk
Fri Apr 16 12:23:39 UTC 2021

I need to migrate several sets of user home directories from an old NFS 
file server to a new NFS file server.  Each group of users belong to 
specific Slurm accounts organized in a hierarchical tree.

I want to make the migration while the cluster is in full production mode 
for all the other accounts (the terms "service window" or "downtime" don't 
exist for me :-)

My idea is to make a Slurm reservation so that the accounts in question 
will have zero jobs running during the reservation, and I also need to 
kick users off the login nodes.  During the reservation I can rsync the 
home directories from the old NFS server to the new NFS server and update 
the NFS automounter links.

Question:  Does anyone have experiences with this type of scenario?  Any 
good ideas or suggestions for other methods for data migration?


Ole Holm Nielsen
PhD, Senior HPC Officer
Department of Physics, Technical University of Denmark

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