Hi, Richard At Thu, 27 May 2010 10:40:41 -0700, K. Richard Pixley wrote: > > Ryusuke Konishi wrote: > > The "roll back" feature is one of our todo items, and not yet > > supported. > Is this something that could be accelerated by a suitable application of > money? I may not understand your question, but technically speaking it is possible to support roll back feature. It's just a matter of work force to do as far as I think. Still, there are some concerns about what the "roll back" sould be. For instance, if you just want to restore from a specific snapshot you took, you can simply read-only mount the snapshot and copy the contents you want to restore. That is done without any filesystem level roll back support. Or you want to undone what you did in filesystem, you may be able to delete log and set proper super block. That is tricky, but possible without filesystem level support if it's not mounted. The hard one is live "roll back", I think, which undone the things on mounted filesystem, or maybe at the boot time by specifying a checkpoint. In any cases, there should be some utility programs to achieve the functionalities above even it doesn't require any filesystem modifications. thanks, regards, > --rich > -- > To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- Jiro SEKIBA <jir@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
