How do I know which processes are locking a specific branch? Let me state the question using a basic example.
> mkdir -p union branch1 branch2 > touch branch1/branch1_file > touch branch2/branch2_file > mount -t aufs aufs union -o br:branch1:branch2 # produces expected union > ls union/ branch1_file branch2_file # Now use tail -f in separate terminals to simulate normal locked files. > tail -f union/branch1_file > tail -f union/branch2_file # Any manipulation on the union results in locked file errors > mount union -o remount,del:branch1 mount: /tmp/union is busy # Killing the correct process, frees the lock > lsof COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME tail 1390 root 3r REG 0,13 0 12 /tmp/union/branch1_file tail 1399 root 3r REG 0,13 0 13 /tmp/union/branch2_file ... > kill 1390 > mount union -o remount,del:branch1 [ 2299.055549] aufs au_opts_verify:1369:mount[1412]: first branch should be rw # I forgot to set branch2=rw, but it works. In this example, I knew which process was locking branch1, but on a running system, how can I tell? I can kill all processes running on device (0,13), but is there any way to identify just the processes which are locking a specific branch? LG ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first
