On Mon, 2007-01-08 at 13:29 -0800, Andrew Morton wrote: > On Sun, 7 Jan 2007 23:12:57 -0500 > "Josef 'Jeff' Sipek" <jsipek@xxxxxxxxxxxxx> wrote: > > > From: Josef "Jeff" Sipek <jsipek@xxxxxxxxxxxxx> > > > > This patch contains the functions used to perform copyup operations in unionfs. > > What is a copyup operation and why does it exist? > > It seems to be copying the entire contents of certain files. That's not a > thing I'd have expected to see in a union filesystem. Explain it all, > please? (Somewhere where the info will be retained for posterity - a > random email is good, but not sufficient...) to do the random e-mail, it's because it just doesn't union "directories", but lets you assign read-write, read-only properties to them. If you try to modify a file on a read-only layer, it will be copied to the top most layer (has to be read-write) and then modified. It can be slow though (imagine modifying a 1GB file). - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
