Hi! > For example, you can use proxy device to store hot data only. With > such strategy new logical blocks (which are always "cold") will always > go to the main storage (in contrast with Burst Buffers, where new > logical blocks first get written to the proxy disk). Once in a while > you need to scan your volume in order to push colder data out, and > pull hotter data in the proxy disk. Reiser5 contains a common > interface for this. It is possible to maintain per-file, or even per- > blocks-extent "temperature" of data (e.g. as a generation counter), Would it be possible to offer userland interface for this? I can probably say that mp3/video files should be cold, while some source files should be hot, etc... Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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