Bug#746577: systemd-sysv: for upgrade safety, systemd-sysv and sysvinit-core must be coinstallable

[Andrei POPESCU]

Control: reassign -1 src:systemd 204-10

On Jo, 01 mai 14, 11:22:57, Zack Weinberg wrote:
> Source: systemd-sysv
> Version: 204-10
> Severity: critical
> Justification: breaks the whole system
> Control: retitle -2 sysvinit-core: for upgrade safety, systemd-sysv and sysvinit-core must be coinstallable
> 
> For safety of upgrades from wheezy to jessie, the process of upgrading
> packages and installing new ones *must not* change either the currently-
> running init or the init that will manage the system on the next boot.
> A transition away from sysvinit must only occur as a result of a
> deliberate sysadmin action with that specific effect, not as a side
> effect of any other operation.
> 
> To achieve this, systemd-sysv and sysvinit-core must be coinstallable,
> with an alternatives-like mechanism for deciding which package actually
> provides init (if this can be done with actual alternatives for
> /sbin/init, that would be ideal, but I suspect it cannot be that simple).
> Other potential providers of /sbin/init should ideally also be included
> in this mechanism, but because the default-for-new-installations is changing
> in jessie from sysvinit to systemd, the cooperation of those two providers
> is more important than the others.
> 
> severity:critical because, depending on how an installation is configured,
> an unanticipated conversion to systemd absolutely can cause the system
> to be unbootable, or fail to carry out its intended function (e.g. because
> a network server no longer starts on boot as intended).
> 
> -- System Information:
> Debian Release: jessie/sid
>   APT prefers unstable
>   APT policy: (501, 'unstable'), (500, 'testing'), (101, 'experimental')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 3.14-1-amd64 (SMP w/8 CPU cores)
> Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash

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