I have added some debug prints to umountfs and umountroot (in /etc/init.d/).
Namely:
mount > /umountrootfs-mount.log
lsof > /umountrootfs-lsof.log
ps auxf > /umountrootfs-ps.log
and similarly in umountfs before they run their umount sequences.
The umountrootfs-mount.log shows, that one of my binded mounts on the /data
filesystem is not unmounted cleanly by unmountfs:
/data/home on /home type none (ro)
/data on the other hand is *not* mentioned anymore(!)
The original state of /data/home is this: /data/home on /home type none
(rw,bind)
as is to be expected with the fstab line i posted in #2.
Other bind-mounted directories are unmounted correctly though although they use
the same options in fstab, e.g.:
/data/tftpboot /tftpboot none
bind
which shows up in the mount log (before umounting in umountfs) as
/data/tftpboot on /tftpboot type none (rw,bind)
Neither the ps nor the lsof log indicate any obvious problems.
Because of this I have to assume that the initscripts are missing something.
** Package changed: ubuntu => sysvinit (Ubuntu)
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https://bugs.launchpad.net/bugs/1103416
Title:
12.04 isn't cleanly unmounted
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