Attached is a patch to sysvinit (from which the initscripts binary package is generated) which appears to fix the immediate problem.
The patch waits for up to 5 seconds for init (upstart) to re-exec. If after this time init has not re-execed, we continue to unmount as before. (In testing, init re-spawns in under 1 second). Tested on lucid, maverick and natty in combination with upstart package built from lp:~clint-fewbar/ubuntu/natty/upstart/restore-re-exec-code. This patch also requires the updated eglibc (which creates /var/run/init.upgraded rather than calling "telinit u"), however for testing the patches, simply running "sudo touch /var/run/init.upgraded" will trigger the new code. As noted by Clint, you may still observe problems if you have certain other services running (such as sshd; see bug #531912). ** Patch added: "lucid-sysvinit_2.87dsf-4ubuntu17_to_sysvinit_2.87dsf-4ubuntu18.diff" https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/672177/+attachment/1824633/+files/lucid-sysvinit_2.87dsf-4ubuntu17_to_sysvinit_2.87dsf-4ubuntu18.diff ** Changed in: sysvinit (Ubuntu Lucid) Assignee: (unassigned) => James Hunt (jamesodhunt) ** Changed in: sysvinit (Ubuntu Lucid) Status: New => In Progress ** Changed in: sysvinit (Ubuntu Natty) Status: New => In Progress ** Changed in: sysvinit (Ubuntu Natty) Assignee: (unassigned) => James Hunt (jamesodhunt) -- You received this bug notification because you are a member of Ubuntu Server Team, which is a direct subscriber. https://bugs.launchpad.net/bugs/672177 Title: libc6 upgrade causes umount to fail on shutdown because init cannot be restarted -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
