Greetings Maxime:

Maxime Kinet wrote:

I know that there are several different options to make several clients mounting their filesystems, and that this one might not be the most efficient one, but I choosed that one just because I knew already how to do it. Now everything works fine, except that I would like to spare some diskspace on the master partition. Since each filesystem is around 500 Mb, I quickly reach more than 10Gb just for the /tftpboot directory.

Have you looked at using UnionFS or AuFS to make a single shared file system for the nodes, with a writable/localized component? I presume that most of the nodes will share most of the (static) files. /var and a few others (/proc /sys /etc ...) should likely be localized, but this is fairly easy to do with UnionFS/AuFS.

Also, have you looked at Perceus? They have a good system for running out of a RAM disk, which you can leverage here as well. There are some diskless based cluster efforts that you could also explore (onesis).


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