This patch adds support for lzop(1) & lz4(1) compression
algorithms to compress iniramfs image file. Both are supported
by the Linux kernel.
Linux kernel exports user's choice of initramfs compression
algorithm as a shell environment variable: INITRD_COMPRESS.
This patch adds support to read this variable and duly compress
the initramfs image file.
Environment variable INITRD_COMPRESS has less precedence than the
command line options --gzip, etc. Ie. command line options could
override the compression algorithm defined by $INITRD_COMPRESS.
Signed-off-by: P J P <ppandit@redhat.com>
[Edited-by: Harald Hoyer: add documentation about lzo and lz4]
--persistent-policy <policy>:
Use <policy> to address disks and partitions.
<policy> can be any directory name found in /dev/disk.
E.g. "by-uuid", "by-label"
This prints the kernel command line parameters for the current disk
layout.
$ dracut --print-cmdline
rd.luks.uuid=luks-e68c8906-6542-4a26-83c4-91b4dd9f0471
rd.lvm.lv=debian/root rd.lvm.lv=debian/usr root=/dev/mapper/debian-root
rootflags=rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered
rootfstype=ext4
This also changes the command line switch to be --add-device and the
config directive is set to add_device. This was chosen as device= in the
config file seems too generic and not quite as consistent with other
directives (i.e. drivers/add_drivers)
The --device command line is still supported but it should be considered
deprecated in favour of --add-device.
Kdump support dump to raw device which could be on top of complex storage
such as multipath and iscsi which are standalone dracut modules.
Add a --device option to dracut which will add the device to host_devs so
dracut can add the dependent modules automaticlly and enable them in initramfs.
--device will accept device node name as the param.
Signed-off-by: Dave Young <dyoung@redhat.com>
Tested-by: Chao Wang <chaowang@redhat.com>
Hannes Reinecke