Public bug reported:
On boot root does not get remounted rewriteable and leads to system
freezing.
Symptoms:
- Regular boot stops after unpacking initramfs
Steps to reprocude (on my system):
1. Boot into recovery, which still works
2. Select "repair dpkg", then select remount root writeable
Systemd now says it remounted root writeable, a green "[OK]"
Followed complains of dpkg beacause root's not writeable
3. select "root shell" in the recovery menu
4. there proof that / not mountable with "touch /tmp/x"
5. execute fsck and see, everythings ok
6. execute "mount -o remount,rw /"
7. see that root is now writeable with "touch /tmp/x"
8. close root shell and choose to continue boot in recovery menu
9. system is starting now without any problems
Two things go wrong here:
A) root isn't remounted writeable but there's no reason to refuse
B) systemd says OK, but didn't do it job
Various Information about installed Ubuntu:
$ uname -a
Linux Z30 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
$ cat /etc/issue
Ubuntu 16.04.1 LTS \n \l
$ dpkg -S /lib/systemd/systemd-remount-fs
systemd: /lib/systemd/systemd-remount-fs
$ dpkg -l systemd | grep ^ii
ii systemd 229-4ubuntu13 amd64 system and service manager
I tried this with various kernels without any difference in behaviour
(4.4.0-21, 4.4.0-31, 4.4.0-53, 4.4.0-47).
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1652761
Title:
[16.04 LTS] systemd systemd-remount-fs does NOT remount root writeable
but says it did
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