On Mon, 18 Aug 2008 16:33:13 +0100 Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:Think of a consumer HSM application: backup to rsync.net or Amazon S3. Instead of waiting for the whole backup to be restored, you can start using the filesystem immediately. The block-on-open hook can be used by the restore program to fetch files from the remote backup site on an as-needed basis, with a full restore going on in the background. If the block-on-open hook can be used for that (even with additional magic, like creating empty HSM inodes with a special attr to notify "the data lives elsewhere"), HSM should be good. The "data lives elsewhere" bit/xattr/whatever could also be used on directories, so not even the whole directory tree would have to be restored right on restore :) -- All rights reversed. --
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| Gerrit Renker | [PATCH 27/37] dccp: Integration of dynamic feature activation - part 2 (server side) |
| Jarek Poplawski | Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock(). |
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