Bug#756725: systemd: should reboot even it umount / fails

[Russell Coker]

Package: systemd
Version: 44-11+deb7u4
Severity: normal

Today I had a server fail to restart when I ran the "reboot" command.  When I
got to it I saw the following on the console:
Could not remount as read-only /: Device or resource busy
Not all file systems unmounted, 1 left.
Cannot finalize remaining file systems and devices, giving up.

Then it hung, presumably indefinitely.

I think it should do a forced reboot in that situation so that we have a usable
system.  Having it hang on a "shutdown" would usually be OK but on a reboot
the sysadmin wants the system to run again.


-- System Information:
Debian Release: 7.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.13-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages systemd depends on:
ii  dpkg                 1.16.15
ii  initscripts          2.88dsf-41+deb7u1
ii  libacl1              2.2.51-8
ii  libaudit0            1:1.7.18-1.1
ii  libc6                2.19-7
ii  libcap2              1:2.22-1.2
ii  libcryptsetup4       2:1.4.3-4
ii  libdbus-1-3          1.6.8-1+deb7u3
ii  libkmod2             9-3
ii  liblzma5             5.1.1alpha+20120614-2
ii  libpam0g             1.1.3-7.1
ii  libselinux1          2.1.9-5
ii  libsystemd-daemon0   44-11+deb7u4
ii  libsystemd-id128-0   44-11+deb7u4
ii  libsystemd-journal0  44-11+deb7u4
ii  libsystemd-login0    44-11+deb7u4
ii  libudev0             175-7.2
ii  libwrap0             7.6.q-24
ii  udev                 175-7.2
ii  util-linux           2.20.1-5.3

Versions of packages systemd recommends:
ii  libpam-systemd  44-11+deb7u4

Versions of packages systemd suggests:
ii  python        2.7.8-1
pn  python-cairo  <none>
pn  python-dbus   <none>
pn  systemd-gui   <none>

-- Configuration Files:
/etc/systemd/systemd-journald.conf changed:
[Journal]
SystemMaxUse=50M
ImportKernel=no


-- no debconf information