Lou Gosselin: > I tried the verbose option, but it doesn't produce enough output. > > > mkdir union a b > > mount -t aufs aufs union -o verbose,br:a=rw:b=rw > > cat > union/lock # in separate term > > mount union -o remount,del:a > [ 114.704254] aufs au_br_del:758:mount[1215]: 1 file(s) opened > mount: /tmp/union is busy > > It doesn't produce any output for other operations. > > mount union -o remount,ro,mod:a=ro > mount: /tmp/union is busy
Generally speaking, it is enough. If you know that a file is still opened when you delete the branch, then you can find which process opens which file by lsof(1). Because "file is opened" is one of the simplest reason, aufs just tells you the number of opened files. If there are some other reason to make the branch undeletable, then aufs will tell you its pathname or the inode number. If remount,mod:a=ro returns EBUSY, it means a file is opened for writing. If you think about the behaviour of unmouting ext2, you would agree this behavour is enough. J. R. Okajima ------------------------------------------------------------------------------ The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://ad.doubleclick.net/clk;226879339;13503038;l? http://clk.atdmt.com/CRS/go/247765532/direct/01/
