This is not a good idea, unless you have a transactional semantic for the
fetches from the backend. Otherwise you have a mixture of old and new files.
>> Clients read off the local disk if they can, but fetch over NFS as
>> required. You can tune the cache size on all of the client machines so
>> they can cache more or less of the most recently used NFS junk on its
>> local disk.
This is btw exactly what CODA and AFS does best.
> Technically cachefs is just a union mount with tmpfs or ramfs as the overlay
> on the underlying filesystem. Doing a seperate cachefs is kind of pointless
> in Linux.
I think it is a bit different, since the cache is on disk and can be larger.
If you want to put that in swap space, you may quickly exceed some VM
limits. So there is a difference.
Greetings
Bernd
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