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Autor: Arnt Karlsen
Data:  
Para: dng
Assunto: Re: [DNG] upcoming usr merge requirements
On Mon, 27 Nov 2023 15:15:03 +0100 (CET), karl@??? wrote in
message <20231127141503.6F1DC862596B@???>:

> o1bigtenor:
> > Background:
> > Reading about the upcoming necessity of moving to 'usr merge'.
>
> The usr-merge is severly nochanlant to people running systems at
> remote places, especially if there a lot of them.


..sounds like a "good" plan by the systemd folks to destroy Devuan
as a viable good old pre-systemd Debian-based business platform.

> > My boxen (for at least the last 12 years if not longer) I run
> > separate partitions for (last number of years only this new one)
> > /efi, /boot , /root (yes I know its a redundancy but it gets the
> > label of /root ), /swap, /usr. /var, and /home. (Not going into the
> > reasoning for such.)
> >
> > Question:
> > What am I supposed to do so that my system will continue to boot
> > with this change
> > to /usr merge?
>
> For your system to survive this madness it to take control of the
> booting process yourself.


..your sweet mkdir-n-mount-everything-in-/etc/rcS-with-busybox-init
idea will defeat the evil /usr-merge scheme? 8o)

> You can do that by e.g. building and installing busybox or similar.
> With busybox init, make a /etc/inittab like:
>
> ##########
> ::sysinit:/etc/rcS
>
> tty1:12345:respawn:/sbin/agetty --noclear 38400 tty1 linux
> tty2:12345:respawn:/sbin/agetty --noclear 38400 tty2 linux
> tty3:2345:respawn:/sbin/agetty --noclear 38400 tty3 linux
> tty4:2345:respawn:/sbin/agetty --noclear 38400 tty4 linux
> tty5:2345:respawn:/sbin/agetty --noclear 38400 tty5 linux
> tty6:2345:respawn:/sbin/agetty --noclear 38400 tty6 linux
>
> #::ctrlaltdel:/sbin/shutdown -r now
> ::ctrlaltdel:/root/bin/Off
> ##########
>
> then create a file /etc/rcS basically replacing the whole
> sysvinig or whatever bootup, just retrace your current bootup
> process and put that in your new rcS. An example start of such
> a file (and yes this is for a system without udev):
>
> ##########
> #!/bin/sh
>
> #sleep 3
> #/sbin/sulogin -t 5
>
> /bin/busybox mount /proc
> /bin/busybox mount /sys
> /bin/busybox mount /config
> /bin/busybox mount /dev/pts
>
> /bin/busybox mount /tmp
> /bin/busybox mount /run
> /bin/mkdir /run/lock
> /bin/busybox mount /run/lock
> /bin/mkdir /run/shm
> /bin/busybox mount /run/shm
> /bin/mkdir /run/sshd
> /bin/mkdir /run/dbus
> /bin/mkdir /run/postgresql
> /bin/mkdir /run/proftpd
> /bin/chown -R postgres.postgres /run/postgresql/
>
> /sbin/fsck -p -C -V -t ext4 /dev/md2
> if [ "$?" -gt 1 ]
> then
> /sbin/sulogin -t 5
> fi
>
> /bin/hostname `cat /etc/hostname`
>
> /sbin/hwclock -u -s
>
> #/sbin/mdadm -A /dev/md16 /dev/sda6 /dev/sdb6
> for i in 7 6
> do
> /sbin/mdadm -A /dev/md$i /dev/sdc$i
> done
> for i in 5 4 3 1
> do
> echo mdadm -A /dev/md$i /dev/sda$i /dev/sdb$i
> /sbin/mdadm -A /dev/md$i /dev/sda$i /dev/sdb$i
> done
>
> /sbin/fsck -p -C -V -R -A
> if [ "$?" -gt 1 ]
> then
> /sbin/sulogin -t 5
> fi
>
> /bin/busybox mount -a
> /sbin/swapon -a
>
> /usr/sbin/adjtimex -t 10000 -f 403859
>
> ##########
>
> Regards,
> /Karl Hammar
>
>
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--
..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.