cachefs deja vu? [LWN.net]

cachefs deja vu?

Posted Apr 8, 2009 17:08 UTC (Wed) by kirkengaard (guest, #15022)
In reply to: Kernel prepatch 2.6.30-rc1 by walovaton
Parent article: Kernel prepatch 2.6.30-rc1

If memory serves, we did this once before, though it was a while ago, and for the same "general purpose" network FS caching idea. What's the difference between this go 'round and Howells' previous implementation?

(reference http://lwn.net/Articles/99597/ and http://lwn.net/Articles/100321/)

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cachefs deja vu?

Posted Apr 10, 2009 18:28 UTC (Fri) by nix (subscriber, #2304) [Link]

Among other things, its handling of things like SELinux is greatly improved (hence all that credentials work a few months back), the 'cachefs' caching filesystem is joined by 'cachefiles', which keeps the cache on a local FS; and it's now general enough to cope with complicated horrors like AFS.

As far as I can tell it works flawlessly and with almost zero setup required. It's particularly effective for boots-from-NFS systems, where NFS's near-total lack of caching otherwise seriously impacts their speed: with fs-cache in the way, after a while the cache is mostly populated and the system hardly needs to hit the network at all.