If the initramfs was built with prefix=/run/... /run can't be mounted
with noexec, otherwise no binary can be run.
Guard against it by looking where /bin/sh is really located.
How to reproduce:
host# ./dracut.sh -o 'dracut-systemd systemd systemd-initrd' --local -f ./initramfs.img
host# qemu-system-x86_64 -initrd ./initramfs.img \
-append 'root=/dev/sda1 rd.cmdline=ask rd.hostonly=0' \
...
Enter additional kernel command line parameter (end with ctrl-d or .)
> rd.break
> .
...
There is no "Break before switch_root"
...
Signed-off-by: Evgeny Vereshchagin <evvers@ya.ru>
crypt/parse-crypt.sh generate initqueue job which always call
dev_unit_name() with an argument beginning with "-". This results
in the following error:
dracut-initqueue[307]: + systemd-escape -p -cfb4aa43-2f02-4c6b-a313-60ea99288087
dracut-initqueue[307]: systemd-escape: invalid option -- 'c'
When systemd's crypttab generator parsed crypttab, it tells
systemd about several devices which may not appear until later
in the boot sequence, and which are not needed while dract is running.
This can particularly happen when an md array is encrypted,
and the array is newly degraded so that it doesn't appear until
dracut runs mdraid_start.sh.
This can result in systemd printing warning messages which are
inappropriate.
So tell systemd that the timeout for each of these is zero.
This is involves splitting some functionality out of wait_for_dev()
That function does two things:
- creates 'finished' hooks so that dracut will wait for the device,
and
- sets the systemd timeout for the device to zero, so systemd doesn't
wait.
We only want the second of these for most encrypted devices.
So split that out into a new function set_systemd_timeout_for_dev(),
and call it from parse-crypt.sh
Signed-off-by: NeilBrown <neilb@suse.de>
--
This version fixes the missing redirect from /etc/crypttab
NeilBrown
dracut: Make host only mode more resilient to missing swaps.
This patch set allows swap devices to disappear without cocking up a
host-only initramfs boot.
The only reason we add swap devices to host-only mode (added in
dd5875499e) is to allow us to process
resume= arguments passed on the kernel command line when the swap
partition lives on something slightly more complex than a normal
partion (e.g. in an LVM or RAID setup).
By adding the device to host_devs, the necessary LVM and RAID hooks
are added and thus the underlying storage will be initialised OK, and
the 95resume module handles the waiting for the device (via udev rules
creating the /dev/resume symlink).
So ultimately, we do not need to hard-code the waiting for the swap
devices into the initramfs at build time as the waiting part can be
dynamic.
This makes things more resiliant to swap partitions disappearing and
being reformatted etc.
Inspired by a patch by Martin Whitaker on Mageia bug:
https://bugs.mageia.org/show_bug.cgi?id=12305
Dracut will generate systemd units for additional devices that should be
brought up during boot, e.g. swap devices. These unit files are broken
symlinks with \ in the filename, e.g.
/etc/systemd/system/initrd.target.wants/dev-disk-by\x2duuid-e6a54f99\x2da4fd\x2d4931\x2da956\x2d1c642bcfee5e.device.
Both the backslash and the broken symlink causes problems for shell
scripts, [ -e "$file" ] isn't enough and read requires the additional -r
argument to not react on the \.
nvidia driver needs this via modprobe script.
Needs to do change the group after a device node got created.
Add chown instead of chgrp which can also change the owner of a file.
Ask Stefand Dirsch <sndirsch@suse.de> for details.
Signed-off-by: Thomas Renninger <trenn@suse.de>
In case of systemd is used the timeout already is set to 180s, compare
with file: modules.d/98systemd/dracut-initqueue.sh
Do the same if systemd is not used, e.g. in kdump case.
Signed-off-by: Thomas Renninger <trenn@suse.de>
When 'initqueue' is called with an invalid command it'll generate
invalid job scripts. This will lead to confusing error messages
later on.
So abort in these cases and print out a warning.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Add more corner cases from systemd's
unit_name_from_path_instance() C function.
Signed-off-by: Thorsten Behrens <tbehrens@suse.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
When generating units for devices the administrator might
want to use a different timeout than the default.
So implement a new parameter 'rd.timeout' for this.
References: bnc#878770
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Thomas Renninger <trenn@suse.de>
This mimicks the similar move of os-release which was done in systemd. These
files are not configuration, but part of the OS.
Still symlinks are in place for compatibility, but those should probably be
dropped eventually.
some programs e.g. systemd-journald expect a directory in /var/log as
the marker to do some actions. Here journald tries to flush
/run/log/journal to /var/log/journal, if the directory is seen.
/var/log is now a symlink to /run/initramfs/log.
udevd will these days default to 'info' logging and thus will
often print out the 'starting version nnn' message (which is
logged at level 'info'), thus spamming the console, even on
'quiet' boots.
We generally expect a udev log level of err (the old default
from pre-October 2013) so we should set that explicilty before
launching udevd in order to suppress the spurious 'info' message.
As we are using the environment variable approach anyway, we
may as well use this method rather than setting the log level
later via udevadm control commands when rd.udev.info/debug are
given on the kernel command line.
The enviroment variable has been around since udev 6b493a20e1
around 2005 so should be safe to use in all cases without version
checks.
Harald Hoyer