This patch adds check of kernel module existance and
propagate errors to upper callers.
In case of break other callers of instmods(), this patch
adds an option '-c' to it, only when "-c" is specified
we fail, otherwise, errors are ignored.
Reported-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Harald Hoyer <harald@redhat.com>
This patch replaces:
- {var}>... redirections with functionally identical eval construct +
explicit FDs
- ^^ and ,, case modifiers with temporary shopt
This allows us to lower minimum required bash version
to at least 3.1 (with current code).
Signed-off-by: Michal Soltys <soltys@ziu.info>
Filtering modules requires enough work that instmods() in the
next pipeline stage was rarely busy. Parallelize the two
filters which do the most work. Also fix a filename-vs-contents
mistake in net_module_filter.
--
John Reiser, jreiser@BitWagon.com
>From f4533a2ceca52c443ddebec01eeaa35d51c39c1b Mon Sep 17 00:00:00 2001
From: John Reiser <jreiser@BitWagon.com>
Date: Tue, 13 Sep 2011 17:41:43 -0700
Subject: [PATCH 1/3] Parallelize block_module_filter
Use bash "[[ string =~ pattern ]]" instead of "egrep -q".
Replace control-dominated serial fondling
for var in $(proc1); do proc2 var; done
with data-dominated parallel pipeline
proc1 | while read var; do proc2 var; done
Together this is a large savings.
[harald@redhat.com: fixed network kernel module filter]
`modules.builtin.bin' is installed like a regular file, thereby ending
up in the wrong place when `--kmoddir' is in effect. Fix this by
specifying the installation destination.
Install /lib/modules/$kv/modules.builtin.bin to suppress modprobe error
messages saying module was not found, while it's built-in.
Credits go to Kay Sievers who enlighten us about meaning of this cool
file.
Kernel 2.6.35 (may be, earlier) split ahci into libahci.ko and ahci.ko
and added ahci_platform.ko. As a result, drivers ahci and ahci_platform
do not contain any symbol that are checked for storage modules (it is
libahci.ko that references ata_scsi_ioctl now). So add additional
symbol ahci_init_controller; it seems this is expected to be called by
every driver based on libahci.ko.
Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
New "filesystems" command line/config file option is added with the ability to
control the list of kernel filesystem modules that are included in the generic
initramfs.
Signed-off-by: Dan Horák <dan@danny.cz>
Some distros, including debian unstable with 2.6.30, still ship
old style ide drivers. These should be installed as well.
Sadly there are no symbols to use for nm, so a simple =ide needs
to suffice.
This introduces filter_kernel_modules, which should be used to install
all kernel modules that match whatever criteria you want.
If running in --hostonly, filter_kernel_modules will only consider
modules that are loaded in the kernel, otherwise it will consider
all the modules installed on the system for the appropriate kernel.
This drastically reduces initramfs generation time when using --hostonly
by eliminating lots of unneeded filesystem activity.
Instead of grovelling through all the modules available for the
kernel looking for block devices, only look at the modules that are
actually loaded. This speeds things up by a rather large amount
when generating the initramfs with --hostonly.
While we are at it, only load the filesystem module that will actually
be used for the root filesystem when running in --hostonly instead
of all the filesystem modules that happen to be loaded at the time.
--kernel-only
only install kernel drivers and firmware files
--no-kernel
do not install kernel drivers and firmware files
All kernel module related install commands moved from "install"
to "installkernel".
For "--kernel-only" all installkernel scripts of the specified
modules are used, regardless of any checks, so that all modules
which might be needed by any dracut generic image are in.
The basic idea is to create two images. One image with the kernel
modules and one without. So if the kernel changes, you only have
to replace one image.
Grub and the kernel can handle multiple images, so grub entry can
look like this:
title Fedora (2.6.29.5-191.fc11.i586)
root (hd0,0)
kernel /vmlinuz-2.6.29.5-191.fc11.i586 ro rhgb quiet
initrd /initrd-20090722.img
initrd /initrd-kernel-2.6.29.5-191.fc11.i586.img
initrd /initrd-config.img
initrd-20090722.img
the image provided by the initrd rpm
one old backup version is kept like with the kernel
initrd-kernel-2.6.29.5-191.fc11.i586.img
the image provided by the kernel rpm
initrd-config.img
optional image with local configuration files
First, add a check script to 99base to ensure that it will load its
prerequisites.
Second, disable the udev magic dracut normally uses when generating
test images -- it was causing random failures when creating the test
root filesystem, presumably due to race conditions between the
rootfs creation scripts and udev.
Third, consolidate the rootfs creation scripts into one script.
All modules now live in a subdirectory /modules.d. Each module is
self-contained -- it should contain everything that it will install
on the initrd. All modules must include a script named install, which
will be sourced by dracut. This script should do the actual file installation
using inst methods. The moddir variable will point to the full path to the
module dracut is currently working on.
As usual, this patch series applies on top of my previous patch series,
and is available as normalize-modules from http://git.fnordovax.org/dracut.
Harald Hoyer