On Mon, 26 Nov 2007 15:12:10 -0800 John Andersen <[EMAIL PROTECTED]> wrote:
> I am new to NILFS, so bear with me. > > I would like to ask, (without reading the entire archive of messages) if > any thought to other garbage collection schemes has been contemplated. > > For instance: This file system looks like it might be very useful for > certain types of environments where N sequential revisions of documents > must be maintained, regardless of the age or how any given document relates > to other documents. > > Checkpoints do not seem to do this. > > I would like to see garbage collection options that allow (for example) > 10 copies retained (of EACH file), each bearing different dates. > > Garbage collection would erase the 11th (oldest copy) if, (and only if) the > other 10 all had different dates. This prevents the situation where one user > (or rogue process) re-saving a document 15 times a day wipes out all prior > copies. > > An option might be garbage collection not based on a NUMBER of iterations > but rather a period of time (3 years, 7 years, etc, while still purging same > date (or same hour, minute, etc) copies. > AFAIK there is a protection interval in which GC wont clean up a checkpoint. (maybe i remember badly... and some other LFS fs was that...) > This type of garbage collection is found almost nowhere, and this > file system seems to be the closest possible candidate to do this. > > There are applications, where a consistent representation of all > files at a specific point in time (snapshot or checkpoint) is LESS > important than the ability to roll back individual documents to > a number of prior iterations or a number of years. > > Legal documents, financial records, code version archiving, etc, all > have these requirements. > > > -- > __________________________ > John Andersen > Screenio.com > _______________________________________________ > users mailing list > [email protected] > https://www.nilfs.org/mailman/listinfo/users BTW: does/will nilfs support named snapshots? Best Regards: Gergely Gábor -- Gergely Gábor <[EMAIL PROTECTED]>
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