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Operating Systems Solaris difference between init and shutdown Post 302335249 by rogerben on Friday 17th of July 2009 09:55:41 PM
Old 07-17-2009
difference between init and shutdown

Hi,

Am new to solaris.Can anyone explains me the difference between using init and shutdown command. As per my knowledge shutdown will give notification to users, is there anything apart from that.


thanks in advance.
rogerben
 

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DRACUT-SHUTDOWN.S(8)						      dracut						      DRACUT-SHUTDOWN.S(8)

NAME
dracut-shutdown.service - unpack the initramfs to /run/initramfs SYNOPSIS
dracut-shutdown.service DESCRIPTION
This service unpacks the initramfs image to /run/initramfs. systemd pivots into /run/initramfs at shutdown, so the root filesytem can be safely unmounted. The following steps are executed during a shutdown: o systemd switches to the shutdown.target o systemd starts /lib/systemd/system/shutdown.target.wants/dracut-shutdown.service o dracut-shutdown.service executes /usr/lib/dracut/dracut-initramfs-restore which unpacks the initramfs to /run/initramfs o systemd finishes shutdown.target o systemd kills all processes o systemd tries to unmount everything and mounts the remaining read-only o systemd checks, if there is a /run/initramfs/shutdown executable o if yes, it does a pivot_root to /run/initramfs and executes ./shutdown. The old root is then mounted on /oldroot. /usr/lib/dracut/modules.d/99shutdown/shutdown.sh is the shutdown executable. o shutdown will try to umount every /oldroot mount and calls the various shutdown hooks from the dracut modules This ensures, that all devices are disassembled and unmounted cleanly. To debug the shutdown process, you can get a shell in the shutdown procedure by injecting "rd.break=pre-shutdown rd.shell" or "rd.break=shutdown rd.shell". # mkdir -p /run/initramfs/etc/cmdline.d # echo "rd.break=pre-shutdown rd.shell" > /run/initramfs/etc/cmdline.d/debug.conf # touch /run/initramfs/.need_shutdown AUTHORS
Harald Hoyer SEE ALSO
dracut(8) dracut 09/12/2013 DRACUT-SHUTDOWN.S(8)
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