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Hi gentoo-clusterists, |
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|
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I have been working on patching genkernel and some initrd scripts to be |
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able to directly overlay "/" with a rw unionfs branch. What's new here? |
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|
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The modifications give the possibility to mount a ro NFS root and |
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overlay another rw NFS directory over the root of a diskless client. |
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This way, you can have a stateful diskless client. |
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|
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I'm testing it right now, both in an SSI setup (all machines share the |
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same "/" -- but you probably all know what SSI means :) ), and in a |
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more traditional way, having a root for the master node, and a root |
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dedicated to the diskless nodes (typically /nfsroot/). |
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|
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At boot, the nodes first nfs-mount "/" from the master, then nfs-mount |
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"/var/state/systems/unionfs_changes/nodeXY" as their rw unionfs overlay. |
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|
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You can then modify directly the "per-nodes" configuration, for example |
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"/var/state/.../nodeXY/etc/fstab", so this will be the fstab seen on |
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boot by nodeXY. Or you modify it live on the node, it will stay this |
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way. |
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|
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If anybody would care to try and give me feedback on the approach, you |
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may find the patches in |
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|
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http://bugs.gentoo.org/show_bug.cgi?id=121334 |
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and |
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http://bugs.gentoo.org/show_bug.cgi?id=99682 |
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Thanks, |
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|
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-- |
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Jean-Francois Richard -- http://jean-francois.richard.name |
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Most general statements are false, including this one. |
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-- |
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gentoo-cluster@g.o mailing list |
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