[CentOS] Query: Filesystems

Jim Bartus jbartus at advance.net
Mon Nov 28 16:23:17 UTC 2005

Maciej Żenczykowski wrote:
> And the last question: is there some sort of filesystem which supports 
> generating 'in-filesystem' snapshots (ie. some sort of copy-on-write 
> block semantics applicable both to files and directories combined with 
> both a root rw directory to access current files and a ro 
> /snapshot/YYMMDD-HHMMSS hierarchy to access snapshots from past dates 
> with the possibility of deleting them at will (ie. generate a snapshot 
> every hour, after 24 hours leave only every 6th one, after 7 days leave 
> only dailies, after a month leave only weeklies etc... - much too 
> complicated, but it's easier to get the basic idea across on a larger 
> example - probably organized via cronjob).

WAFL does this, unfortunatly it only runs on NetApps.


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