LWN: Comments on "Overlayfs for 3.10"

Overlayfs for 3.10

heijo — Thu, 21 Mar 2013 05:37:56 +0000

Nice, how do we register for the celebrations?

Overlayfs for 3.10

i3839 — Thu, 21 Mar 2013 02:08:54 +0000

I don't know about overlayfs, but considering /etc/ is tiny you could achieve the same result by copying the global components to a local ramdisk/tmpfs and mount-bind the client-specific NFS files/directories one by one with a script. If you don't need local rw, just bind directly on top of the global fs. Or do it the other way round, bind the global fs components on top of the NFS, whatever is more convenient.

Overlayfs for 3.10

giggls — Thu, 14 Mar 2013 12:37:24 +0000

One of the typical deployment scenarios for a union type filesystem (actually the one I currently use aufs for) is diskless clients where /etc is made from 2-3 components:
global(ro), client-specific(rw via NFS), local (optional, rw on ramdisk)

AFAIR this can not be done in overlayfs. So this is going to be worthless for the diskless crowd right?

Sven