Hello MJ, Michael Johnson - MJ: > Currently these features are dropped temporary from aufs3. > See design/08plan.txt in detail. > ... > - nested mount, i.e. aufs as readonly no-whiteout branch of another aufs > (robr) > ... > > Looking at > http://sourceforge.net/p/aufs/aufs3-standalone/ci/aufs3.2/tree/Documentatio= > n/filesystems/aufs/design/99plan.txt > it > looks like that feature was probably removed from aufs2.
Exactly. You are totally right, and I am happy and surprised that you tracked the history of aufs. The "aufs as readonly no-whiteout branch of another aufs" feature, aka. "robr" mount option, was implemented in aufs1 era, but was dropped in aufs2. It simply because it is (mostly?) enough to put multiple branches in a single aufs mount. I left a note in the document "Documentation/filesystems/aufs/design/99plan.txt" (previously 08plan.txt) because I thought someday someone would want that feature again. But through all over aufs2 era, there was no such request (if I remember correctly). I think I am going to shout loudly "Add more branches in single aufs mount, instead of nested stacking." Such nested stacking will consume the kernel stack very much. J. R. Okajima ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk
