On Mon, Aug 02, 2021 at 11:11:11AM -0700, David Christensen wrote:
> On 8/1/21 3:51 PM, Greg Wooledge wrote:
> > On Sun, Aug 01, 2021 at 03:29:07PM -0700, David Christensen wrote:
> > > 2021-08-01 13:52:37 root@dipsy ~
> 
> > > # gunzip -c /boot/initrd.img-4.19.0-17-amd64 | cpio -i -d -H newc
> > > --no-absolute-filenames
> > > 246741 blocks
> > 
> > That may not extract the full content of the initrd.  It only reads
> > one of the concatenated CPIO archives.  Also, the first archive may not
> > be gzipped.  Also also, hard-coding the input archive format is weird;
> > I'd prefer to let cpio auto-detect it.
> > 
> > To get a full listing, either use "lsinitramfs -l", or write a command
> > that reads *all* of the CPIO archives, not just the first one.  I'd
> > advise using lsinitramfs -l, because it'll be a lot easier.
> 
> 
> Please post your console session showing how you created
> initrd.img-5.10.0-8-amd64.txt.gz.

I didn't.  It was created automatically when I installed dracut-core.

Prior to that, it was created automatically every time I did anything
with apt-get which touched the "low level stuff" (kernel, firmware,
microcode, busybox, other tools that live in the initrd, and so on).

Here's an example:

unicorn:~$ sudo apt-get purge dracut-core cryptsetup
[sudo] password for greg: 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages will be REMOVED:
  cryptsetup* cryptsetup-initramfs* cryptsetup-run* dracut-core*
0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.
After this operation, 1,847 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 157820 files and directories currently installed.)
Removing cryptsetup-run (2:2.3.5-1) ...
Removing cryptsetup-initramfs (2:2.3.5-1) ...
update-initramfs: deferring update (trigger activated)
Removing cryptsetup (2:2.3.5-1) ...
Removing dracut-core (051-1) ...
Processing triggers for man-db (2.9.4-2) ...
Processing triggers for initramfs-tools (0.140) ...
update-initramfs: Generating /boot/initrd.img-5.10.0-8-amd64
(Reading database ... 157360 files and directories currently installed.)
Purging configuration files for cryptsetup (2:2.3.5-1) ...
Purging configuration files for dracut-core (051-1) ...
Purging configuration files for cryptsetup-initramfs (2:2.3.5-1) ...
unicorn:~$ ls -l /boot/initrd*
-rw-r--r-- 1 root root 30924690 Jan 29  2021 /boot/initrd.img-4.19.0-13-amd64
-rw-r--r-- 1 root root 34310935 Jul 21 07:30 /boot/initrd.img-5.10.0-7-amd64
-rw-r--r-- 1 root root 39491974 Aug  2 14:26 /boot/initrd.img-5.10.0-8-amd64

Gah.  It's still inflated.

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