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In the kernel comments PARTUUID is shown using uppercase A-F:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/init/do_mounts.c?id=HEAD#n183
However, dracut tries to use the value of PARTUUID directly in
/dev/disks/by-partuuid/ which expects the hex to be lowercase. This will
cause root to never be found, oops!
Fix dracut so it can, like the Kernel, accept either casing.
Untested but I added a hack on my local system that was similar.
Currently the default action is emergency_shell when failure happened
during system boot. In kdump, this default may not be expected. E.g,
if dump target is not rootfs, it does not matter if mount root failed.
Adding an action which allow dracut always go ahead though failure
happens is needed by kdump.
So here add a function action_on_fail() and cmdline parameter
action_on_fail=<shell | continue>. Use action_to_fail() to replace
emergency_shell which was called after failure. By $(getarg action_on_fail=),
decide to drop into shell, or to leave away the failure and go ahead.
v3->v4:
add handling of selinux policy loaded failure, and change code format to
be consitent
Signed-off-by: Baoquan He <bhe@redhat.com>
[Edited by harald@redhat.com]
xfs and reiserfs (among other) supports storing journal data to a
separate device. Unfortunately, XFS requires this information to boot
properly (reiserfs can embed the information in its metadata but you
might want to override it).
Frederic Crozat <fcrozat@suse.com>
xfs and reiserfs (among other) supports storing journal data to a
separate device. Unfortunately, XFS requires this information to boot
properly (reiserfs can embed the information in its metadata but you
might want to override it).
Attached patch ensure host information are stored in initramfs and also
allows to give data over kernel commandline.
--
Frederic Crozat <fcrozat@suse.com>
SUSE
>From a7c592b9bb7de0d7874ae51d02944a7eee2ec75b Mon Sep 17 00:00:00 2001
From: Frederic Crozat <fcrozat@suse.com>
Date: Tue, 24 Jul 2012 18:52:17 +0200
Subject: [PATCH] Add support for separate journal on reiserfs and xfs
rflags is no longer guaranteed to be non empty. / is mounted according
to rootflags parameter but forced ro at first. Later it is remounted
according to /etc/fstab + rootflags parameter and "ro"/"rw". If
parameters are still the same as for first mount, / isn't remounted.
Conflicts:
modules.d/95rootfs-block/mount-root.sh
modules.d/99base/parse-root-opts.sh
Mounting, unmounting and then mounting a disk partition takes some
time.
On embedded systems such as OLPC XO where we disable fsck and fstab
reading, the root options are not going to change throughout the
mount_root() function, so remounting is time consuming and without
change.
Detect and optimize for this case so that the filesystem is only
mounted once.
fsck_single() operates directly on the device, so fstab is not
necessary. fs-lib functions make sure fscks don't complain.
Code is only commented out just in case I missed something.
To not pollute dracut-lib.sh, all the fsck related functions were moved
to fs-lib.sh. The functions available are as follows:
- fsck_single
this will detect/verify filesystem, check if it has necessary tools and
check the filesystem respecting additional flags (if any), using
specific "driver" (or falling back to generic one). Currently
available: fsck_drv_{com,xfs,std}. 'com' is used for tools following
typical subset of options/return codes (e.g. ext, jfs), 'std' is used
for "unknown" fs and doesn't assume it can be run non-interactively.
Please see comments around the code for more info.
- fsck_batch
this will check provided list of the devices;
Both of the above functions will fake empty fstab, to make generic fsck
not complain too much (excact devices are always provided on the command
line).
"Known" filesystems currently: ext234, reiser, jfs, xfs
- det_fs
Small bug fixed - as this function is meant to be called in $(), it may
not be verbose.
Current behaviour is:
- if detection is successful, use its result
- if detection is not successful, and filesystem is provided, return
the provided one; otherwise use auto
Previously, '-a' was added for ext[234] filesystems if other
conflicting flag were not present. It's being done automatically
in fsck_drv_com() now (also for jfs and reiser).
Use common fsck and det_fs code. Verify filesystem type more
aggressively, which has a chance to be more resistant to
accidental mistakes.
Also, there's no need to generate custom fstab for the sake of fsck
anymore.
Signed-off-by: Michal Soltys <soltys@ziu.info>
We want all "/var/run" information to live in /dev/.run, until the real
root is mounted.
Therefore we mount a tmpfs on /dev/.run, which can/will be bind/move mounted
on /var/run later on.
