On Thu, Jun 18, 2009 at 03:56:23PM +0200, Roy Sigurd Karlsbakk wrote: > I have heard/read about systems from Sun and NetApp using SDs for > caching. Sun uses different SDs for read and write caching (one being > faster for reads and the other for writes). The storage solution from > Sun is based on Solaris with ZFS. > > I know too little about filesystems design to know exactly how they do > this, but can someone think of a way this could be implemented in btrfs?
Linux already has second-level¹ cache layer, it called FS-Cache. For now, the sole user is NFS. btrfs could take advantage of FS-Cache also. ¹ first-level is page cache in RAM -- Tomasz Torcz "Never underestimate the bandwidth of a station xmpp: zdzich...@chrome.pl wagon filled with backup tapes." -- Jim Gray -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
