Use udevadm to detect the required kernel modules to load a given
device. udevadm will follow the device chain, help detect all required
parent device drivers as well.
Signed-off-by: Kairui Song <kasong@redhat.com>
check_block_and_slaves_all $func $dev should return 0, if $func return 0
for any checked device. Currently if any device don't have any sub
device, 1 is returned instead.
So remove the sub device checking statement. Also remove the same
statement in check_block_and_slaves, the "[[ -f $_x/dev ]]" in the for
loop is enought to ensure sub device exists.
Signed-off-by: Kairui Song <kasong@redhat.com>
It's like check_kernel_config, help to check if a kernel module is
enabled (cover built-in or compiled module case).
Signed-off-by: Kairui Song <kasong@redhat.com>
The iSCSI configuration is started after dracut checks for resume,
so we run into a timeout here. Additionally it's questionable if
resume on iSCSI makes sense (or is even supported on the platform).
Same holds true for Network Block Devices and FcOE, cover those as well
References: bsc#999663
Original-patch-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Daniel Molkentin <daniel.molkentin@suse.com>
This helper function takes a remote IP address, and tries to
determine the dracut command line arguments ip= and ifname= that
will make this remote address reachable during boot.
Functionality was taken from the module-setup.sh scripts of 95iscsi and 95nfs,
cleaned up and fixed some issues in particular with statically configured
networks, where the old code would print the unsupported string
"$ifname:static".
For the shell scripts, new environment variables were introduced.
dracutsysrootdir is the root directory, file existence checks use it.
DRACUT_LDCONFIG can override ldconfig with a different one that works
on the sysroot with foreign binaries.
DRACUT_LDD can override ldd with a different one that works
with foreign binaries.
DRACUT_TESTBIN can override /bin/sh. A cross-compiled sysroot
may use symlinks that are valid only when running on the target
so a real file must be provided that exist in the sysroot.
DRACUT_INSTALL now supports debugging dracut-install in itself
when run by dracut but without debugging the dracut scripts.
E.g. DRACUT_INSTALL="valgrind dracut-install or
DRACUT_INSTALL="dracut-install --debug".
DRACUT_COMPRESS_BZIP2, DRACUT_COMPRESS_LBZIP2, DRACUT_COMPRESS_LZMA,
DRACUT_COMPRESS_XZ, DRACUT_COMPRESS_GZIP, DRACUT_COMPRESS_PIGZ,
DRACUT_COMPRESS_LZOP, DRACUT_COMPRESS_ZSTD, DRACUT_COMPRESS_LZ4,
DRACUT_COMPRESS_CAT: All of the compression utilities may be
overridden, to support the native binaries in non-standard places.
DRACUT_ARCH overrides "uname -m".
SYSTEMD_VERSION overrides "systemd --version".
The dracut-install utility was overhauled to support sysroot via
a new option -r and fixes for clang-analyze. It supports
cross-compiler-ldd from
https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f
DRACUT_INSTALL_PATH was introduced so dracut-install can work with
a different PATH. In a cross-compiled environment (e.g. Yocto), PATH
points to natively built binaries that are not in the host's /bin,
/usr/bin, etc. dracut-install still needs plain /bin and /usr/bin
that are relative to the cross-compiled sysroot.
The hashmap pool allocate_tile/deallocate_tile code was removed
because clang-analyze showed errors in it. hashmap_copy was removed
because it wasn't used and clang-analyze showed errors in it.
DRACUT_INSTALL_LOG_TARGET and DRACUT_INSTALL_LOG_LEVEL were
introduced so dracut-install can use different settings from
DRACUT_LOG_TARGET and DRACUT_LOG_LEVEL.
Signed-off-by: Böszörményi Zoltán <zboszor@pr.hu>
Previous in commit 7047294, dracut will include the loaded kernel module
list in initramfs, so other tools could check if the loaded kernel
module is changed and rebuild the host only initramfs in case some
module required to boot the machine is missing due to host only install.
It's better to use modalias list generated by dracut-install, that
list includes the device modalias list combined with current loaded
kernel module list. In this way, if any kernel module is yet to be
loaded when the initramfs is built, or got unloaded by accident the
module list will not change. This make the list more stable over
initramfs builds.
Signed-off-by: Kairui Song <kasong@redhat.com>
A hostonly image will not include every possibly required kernel module,
so if any hardware or configuration changed, the image may fail to boot.
One way to know if there are any hardware change or configuration change
that will require an image rebuild or not is to check the loaded kernel
module list. If the loaded kernel module list differs from last build
time, then the image may require to be rebuilt.
This commit will let dracut record the loaded kernel module list when
the image is being built, so other tools or services can compare this
list with currently loaded kernel modules to decide if dracut should be
called to rebuild the image.
To retrieve the loaded kernel modules list when an image is built, use
lsinitrd command:
lsinitrd $image -f */lib/dracut/loaded-kernel-modules.txt
There is currently no way to override dracut's preference for
/dev/mapper device names. But using these is problematic in
different scenarios: For example, if a user has a multipath-
enabled system but wants to disable multipath, or if the
names of multipath maps change because of configuration changes
(e.g. toggling user_friendly_names in /etc/multipath.conf).
This patch makes dracut prefer the user-specified
--persistent_policy names over /dev/mapper names.
It might be worthwhile to discuss why dracut prefers /dev/mapper
of /dev/disk/by-uuid at all. This preference was introduced
in 9037b63e with the argument "dm devices maintain /dev/mapper/* as
persistent names", but that's wrong for the scenarios mentioned
above, and is not a compelling reason for preferring /dev/mapper
over /dev/disk/by-uuid.
References: bsc#908143
Signed-off-by: Martin Wilck <mwilck@suse.de>
Instead of trying all /dev/mapper/* devices to match the maj:min, and
get the VG name with "lvm lvs", use the dm/name from /sys and dmsetup
splitname.
This should speedup execution with lots of LVs.
The caller of "for_each_host_xx func" needs to tell three cases:
func success/ fail / not be called.
E.g, in kdump case, host_devs can be empty, and we want to know it.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
add check_vol_slaves_all to be used in check_block_and_slaves_all
otherwise only the first lvm VG member would be processed
(cherry picked from commit 7a7b8c1740)
The space does not separate the elements reliably, spaces can be
embedded in parenthesized expressions too:
libgmpxx.so.4 (libc6, hwcap: 0x0000000004000000) => /lib/sse2/libgmpxx.so.4
libgmp.so.10 (libc6, hwcap: 0x0000000004000000) => /lib/sse2/libgmp.so.10
This results in dracut creating '0x0000000004000000' and '=>'
directories in the initramfs image.
--add-drivers and --filesystems kernel drivers are added via:
instmods -c
The check option makes the function return if one driver could not get
installed without trying to install further drivers which is bad.
The user is still informed ($_silent is by default no), but all modules
passed to instmods are tried to be loaded, even if one fails.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Some modules (like ext4) provide aliases by which the modules
can be accessed, too. But when using aliases directly dracut
fails to include the correct module. So translate the alias
into the correct module name before checking the module.
References: bnc#886839
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Thomas Renninger <trenn@suse.de>
If a device-mapper device is not created by LVM it's pointless
to call any 'lvm' programs got extract details; they'll be
failing anyway. So check the UUID before calling 'lvm'.
This speeds up initrd creation and avoids I/O errors on
multipath devices.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Thomas Renninger <trenn@suse.de>
loginstall specifies a directory, in which dracut-install records all
files, which were installed from the host system to the initramfs.
Use case is e.g. to create a list of packages to watch for updates, to
maybe trigger a recreation of the initramfs.
Harald Hoyer