Might be unrelated, but I discovered that: ## root namespace
root@iscsihang:~$ mount | egrep -E "sd.*(xfs|ext4)" /dev/sda1 on /ext4 type ext4 (rw,relatime,stripe=32,data=ordered,_netdev) /dev/sdb1 on /xfs type xfs (rw,relatime,attr2,inode64,noquota,_netdev) ## specific mnt namespace root@iscsihang:~$ ip netns exec testnamespace /bin/bash root@iscsihang:~$ sudo umount /xfs root@iscsihang:~$ sudo umount /ext4 ## root namespace root@iscsihang:~$ mount | egrep -E "sd.*(xfs|ext4)" /dev/sda1 on /ext4 type ext4 (rw,relatime,stripe=32,data=ordered) /dev/sdb1 on /xfs type xfs (rw,relatime,attr2,inode64,noquota) When a mount namespace (mntns) umounts a --shared filesystem from the root namespace, the _netdev flag is gone. That might stop init scripts from correctly identifying when those filesystems should be umounted (before the network is gone, for example) -> this might be "another" bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1569925 Title: Shutdown hang on 16.04 with iscsi targets To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1569925/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
