kpcyrd authored Jun 26, 2021 and Natanael Copa committed Aug 06, 2021

See https://twitter.com/sn0int/status/1408853993774845952

omni authored Jan 15, 2021 and Natanael Copa committed Jun 07, 2021

- add zstd to mkinitfs usage output
- add flags -C and -s to man page
- update bugtracker URL
- proofreading

Thermi authored Jan 24, 2020 and Natanael Copa committed Dec 22, 2020

Run mkdir -p before copying the kernel modules. Makes sure the dirs exist before calling cp on them.

Now that 5.10 is out and supports zstd compression for the kernel and
initramfs, add support for zstd to mkinitfs. The benefits have been
discussed at length on lkml[1][2].

In my personal experience, the compression (mkinitfs) seems to be
slower, but decompression (booting) seems to be faster. I think most
people boot more than they mkinitfs.

The default is still gzip, so no change should be noticed unless
someone goes looking for trouble.

To test this functionality, just add the following to mkinitfs.conf:

```text
initfscomp=zstd
```

[1] https://lkml.org/lkml/2020/7/23/1010
[2] https://lkml.org/lkml/2020/7/1/722

pigz(1) is a parallel gzip implementation. As such, it significantly
faster than gzip(1). This patch uses pigz(1) instead of gzip(1),
if it is installed, otherwise it just falls back to gzip(1). This is
similar to the current pigz support in abuild.

Without this patch:

	$ time mkinitfs
	==> initramfs: creating /boot/initramfs-lts
	real	0m 38.19s
	user	0m 35.47s
	sys	0m 0.49s

With this patch applied and pigz installed:

	==> initramfs: creating /boot/initramfs-lts
	real	0m 13.24s
	user	0m 38.30s
	sys	0m 0.56s

This change was discussed on IRC with _ikke_ and mps.

ref https://gitlab.alpinelinux.org/alpine/aports/issues/11044

instead of having only one features.d directory, make it a search
path to which paths can be prepended with -P option. This allows
custom boot media creation scripts to contain features.d overlays,
and additional features.

Shiz ... authored Nov 17, 2016 and Natanael Copa committed Nov 28, 2016

This allows one to make a generic initramfs that doesn't require a running
kernel identical to the one used for booting, if said kernel already includes
everything it needs to function (such as compiling everything in instead of
using kernel modules).

this is mainly to copy the developer keys present on build system
to the target initramfs. simplifies creating your own initramfs
and when your key is not packaged.

it is normal that kernel modules or directories are missing in
some architectures. don't give unwanted warnings on those.

-rw-r--r--    1 tteras   tteras    13922864 Oct 28 08:38 initramfs-new
-rw-r--r--    1 tteras   tteras    12645566 Oct 28 08:27 initramfs-old

diff on installed modules:

+lib/firmware/matrox/g200_warp.fw
+lib/firmware/matrox/g400_warp.fw
+lib/firmware/cxgb3/t3c_psram-1.1.0.bin
+lib/firmware/cxgb3/ael2020_twx_edc.bin
+lib/firmware/cxgb3/t3fw-7.12.0.bin
+lib/firmware/cxgb3/ael2005_opt_edc.bin
+lib/firmware/cxgb3/t3b_psram-1.1.0.bin
+lib/firmware/cxgb3/ael2005_twx_edc.bin
+lib/firmware/qlogic/12160.bin
+lib/firmware/qlogic/1040.bin
+lib/firmware/qlogic/1280.bin
+lib/firmware/ql2400_fw.bin
+lib/firmware/ql2100_fw.bin
+lib/firmware/ene-ub6250/sd_init1.bin
+lib/firmware/ene-ub6250/ms_init.bin
+lib/firmware/ene-ub6250/ms_rdwr.bin
+lib/firmware/ene-ub6250/msp_rdwr.bin
+lib/firmware/ene-ub6250/sd_init2.bin
+lib/firmware/ene-ub6250/sd_rdwr.bin
+lib/firmware/advansys/38C1600.bin
+lib/firmware/advansys/mcode.bin
+lib/firmware/advansys/38C0800.bin
+lib/firmware/advansys/3550.bin
+lib/firmware/ql2500_fw.bin
+lib/firmware/isci/isci_firmware.bin
+lib/firmware/r128/r128_cce.bin
+lib/firmware/ql2300_fw.bin
+lib/firmware/ql2322_fw.bin
-lib/firmware/radeon/TAHITI_vce.bin
+lib/firmware/ql2200_fw.bin
+lib/firmware/cxgb4
+lib/firmware/cxgb4/t4fw.bin
+lib/firmware/cxgb4/t5fw.bin

Jesse Young authored Sep 13, 2015 and Natanael Copa committed Sep 22, 2015

mdadm otherwise complains about not being able to lock
/run/mdadm/map.lock

ref #3240

When searching kernel module depedencies we need to that relative
kerneldir and not relative basedir.

This is so we don't need to manually manage the dependencies which gets
ugly when supporting multiple libc.

Try catch all corner cases properly

and make it work with relative paths too

we need make the files relative so we strip off any leading /

it should be faster

We actually copy the files to tempdir but instead of creating the archive
we simply list contents of the tempdir

we do that by simply removing the prepend string