Comment 146 for bug 1073433

I did a bit of hacking on init.d/umountroot, adding lsof and ps -ef after the remount fails.
I could see that dhclient was still running, so I added before the remount: pkill -9 dhclient

After this change, dhclient was gone, but the remount still failed. In lsof output I can see:

init 1 root 15w REG 8,24 1134 438383 /var/log/upstart/mountall.log

It seems like there is a problem in the upstart init where it is not closing files, besides the problem with dhclient.