Indeed, Miklos, changing layers dynamically is VERY tricky. Unionfs supports that, but a good amount of its code all over is dedicated to handling dynamic layer changes. I advise you to avoid supporting this feature for a while, if ever: get a small, functional, working overlayfs first.
I personally never liked the idea of changing layers dynamically: it’s like asking a file system to remain consistent and detect all lower changes when someone goes and hand-edits disk blocks. Too messy. The pain of developing and supporting such a feature is much greater than the annoyance to users who have to unmount and remount back their layers to form a new structure. Cheers, Erez. > On Nov 10, 2014, at 4:09 AM, Miklos Szeredi <mik...@szeredi.hu> wrote: > > As for changing the stacking while the overlayfs is mounted: currently this is > not supported, the layers specified at the mount time remain there until the > overlay is unmounted. Currently there's no possibility to add or remove > layers > in a dynamic way, and it is definitely more tricky to implement than the > static > configuration. > > Thanks, > Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
