Re: Read-only rootfs on systemd

[Amit <amit.uttam@gmail.com>]

Reco <recoverym4n <at> gmail.com> writes:

> 
> Can you do the following, please:
> 
> 1) Shutdown cups by systemd's way (systemctl blahblah …).
> 
> 2) Start it by /etc/init.d/cups start.
> 
> 3) Confirm with lsof whenever /etc/passwd is kept open.
> 
> 4) While you're at it, invoke 'fuser /etc/passwd' to ensure that nobody
> else is using it.
> 
> Reco
> 

 0) After reboot and running 'lsof +L1':
    COMMAND  PID     USER   FD   TYPE DEVICE SIZE/OFF NLINK   NODE NAME
    cupsd    935     root    8r   REG    8,1     1392     0 132095
/etc/passwd (deleted)

 1) Shutting down cups:
    sudo service cups stop

    No /etc/passwd in 'lsof +L1' output

 2) Starting cups:
    $ sudo /etc/init.d/cups start
    [ ok ] Starting cups (via systemctl): cups.service.

 3) No /etc/passwd in 'lsof +L1' output

 4) fuser output shows cupsd process using /etc/passwd but no output in lsof
showing '(deleted)'.

 At this point remounting as 'ro' works.