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On Wed, Jan 26, 2011 at 01:37:38PM +0100, Matthias Fechner wrote: |
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> Dear list, |
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> |
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> I want to build up a NFS share for several host. |
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> The base system is always equal, only some files are different |
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> (files in /etc and /var, maybe more). |
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> |
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> The structure should look like: |
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> Base system is on /basesystem |
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> |
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> Then I want a directory for every host: |
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> /nfsroot/host1 |
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> /nfsroot/host2 |
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> .. |
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> /nfsroot/hostn |
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> |
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> Client 1 will boot via lan and mount the /nfsroot/host1 via NFS. |
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> On the server the mount could look like: |
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> mount -t nullfs /basesystem /nfsroot/host1 |
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> mount -t nullfs /basesystem /nfsroot/host2 |
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> |
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> If the host1 changes now a file the changed file is not stored in |
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> /basesystem but in /nfsroot/host1. |
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> (so you can think about a filesystem in two layers, the ground layer |
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> is /basesystem and readonly, changes will go to /nfsroot/hostn) |
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> |
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> If i upgrade the /basesystem all files should be available for all |
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> hosts expect the files the host changed by itself (they are stored |
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> in the nfsroot/hostn directory). |
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> |
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> In FreeBSD there is a file system available called nullfs which |
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> could be used for this. |
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> Is there a similar filesystem for Linux available, too? |
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|
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Unionfs or aufs should be able to do that. |
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|
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yoyo |
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