Why does mkinitrd require plymouth?

[Steve Grubb]

why does mkinitrd require plymouth? There are different aims to adjust package 
dependencies for security or minimal installation reasons. For example:

https://fedoraproject.org/wiki/SIGs/Server

We would like to eliminate several packages from the minimal install. 

# rpm -e libpng
error: Failed dependencies:
        libpng12.so.0 is needed by (installed) 
plymouth-libs-0.6.0-0.2008.11.17.3.fc10.i386
        libpng12.so.0 is needed by (installed) 
plymouth-0.6.0-0.2008.11.17.3.fc10.i386
        libpng12.so.0(PNG12_0) is needed by (installed) 
plymouth-libs-0.6.0-0.2008.11.17.3.fc10.i386
[root@dhcp-lab-116 init.d]# rpm -e plymouth
error: Failed dependencies:
        plymouth >= 0.6.0-0.2008.09.10.1 is needed by (installed) 
mkinitrd-6.0.71-3.fc10.i386

Can we have mkinitrd to optionally use plymouth? If its there, build it in to 
the initrd. Otherwise let a server boot in text mode since it doesn't have a 
video display on it?

Thanks,
-Steve

[Jochen Schmitt]

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Steve Grubb schrieb:
>  why does mkinitrd require plymouth? There are different aims to
>  adjust package dependencies for security or minimal installation
>  reasons. For example: 
As far as I have understood it, plymouth will be put into the
initrd
to allow a
switch into a graphical mode as early as possible.

Best Regards:

Jochen Schmitt
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[Steve Grubb]

On Wednesday 28 January 2009 01:03:38 pm Jochen Schmitt wrote:
>  > why does mkinitrd require plymouth? There are different aims to
>  > adjust package dependencies for security or minimal installation
>  > reasons. For example:
>
>  As far as I have understood it, plymouth will be put into the initrd
>  to allow a switch into a graphical mode as early as possible. 
Yeah, but servers never enter run level 5. We would like to remove this 
dependency chain if at all possible.

-Steve

[Dave Jones]

On Wed, Jan 28, 2009 at 07:03:38PM +0100, Jochen Schmitt wrote:
>  -----BEGIN PGP SIGNED MESSAGE-----
>  Hash: SHA1
>  
>  Steve Grubb schrieb:
>  > why does mkinitrd require plymouth? There are different aims to
>  > adjust package dependencies for security or minimal installation
>  > reasons. For example:
>  As far as I have understood it, plymouth will be put into the initrd
>  to allow a
>  switch into a graphical mode as early as possible. 
AIUI, The primary reason it's there is to provide a user interface
for the 'enter your password' dialog if you have encrypted root.

	Dave

-- 
http://www.codemonkey.org.uk

[Mathieu Bridon]

>   > As far as I have understood it, plymouth will be put into the
> initrd
>   > to allow a
>   > switch into a graphical mode as early as possible.
>
>  AIUI, The primary reason it's there is to provide a user interface
>  for the 'enter your password' dialog if you have encrypted root. 
That was possible in text mode in Fedora 9.

In fact, RHGB used to crash on this question and the user then had to
enter the passphrase in text mode, the remaining of the boot being
text (has RHGB had crashed).


----------

Mathieu Bridon (bochecha)
French Fedora Ambassador

----------
"They who can give up essential liberty to obtain a little temporary
safety, deserve neither liberty nor safety." ~Benjamin Franklin

[Jesse Keating]

On Wed, 2009-01-28 at 19:11 +0100, Mathieu Bridon (bochecha) wrote:
>   
>  That was possible in text mode in Fedora 9.
>  
>  In fact, RHGB used to crash on this question and the user then had to
>  enter the passphrase in text mode, the remaining of the boot being
>  text (has RHGB had crashed). 
And now instead of two different code paths to get the passphrase
entered, we have one.

Plymouth is what provides the "text" mode bootup.  It /also/ provides
the graphical boot up, via plugins.  It is what generates boot.log,
shows messages on the screen, and captures passphrases for encrypted
root.

-- 
Jesse Keating
Fedora -- Freedom² is a feature!
identi.ca: http://identi.ca/jkeating

[Rahul Sundaram]

Steve Grubb wrote:
>  why does mkinitrd require plymouth? There are different aims to
> adjust package 
>  dependencies for security or minimal installation reasons. For example:
>  
>  https://fedoraproject.org/wiki/SIGs/Server
>  
>  We would like to eliminate several packages from the minimal install. 
>  
>  # rpm -e libpng
>  error: Failed dependencies:
>          libpng12.so.0 is needed by (installed) 
>  plymouth-libs-0.6.0-0.2008.11.17.3.fc10.i386
>          libpng12.so.0 is needed by (installed) 
>  plymouth-0.6.0-0.2008.11.17.3.fc10.i386
>          libpng12.so.0(PNG12_0) is needed by (installed) 
>  plymouth-libs-0.6.0-0.2008.11.17.3.fc10.i386
>  [root@dhcp-lab-116 init.d]# rpm -e plymouth
>  error: Failed dependencies:
>          plymouth >= 0.6.0-0.2008.09.10.1 is needed by (installed) 
>  mkinitrd-6.0.71-3.fc10.i386
>  
>  Can we have mkinitrd to optionally use plymouth? If its there, build it in to 
>  the initrd. Otherwise let a server boot in text mode since it doesn't have a 
>  video display on it? 
Plymouth is what provides the boot log as well.

Rahul

[Ray Strode]

Hi,

>  We would like to eliminate several packages from the minimal
> install.
>
>  # rpm -e libpng
>  error: Failed dependencies:
>         libpng12.so.0 is needed by (installed)
>  plymouth-libs-0.6.0-0.2008.11.17.3.fc10.i386
>         libpng12.so.0 is needed by (installed)
>  plymouth-0.6.0-0.2008.11.17.3.fc10.i386
>         libpng12.so.0(PNG12_0) is needed by (installed)
>  plymouth-libs-0.6.0-0.2008.11.17.3.fc10.i386
>  [root@dhcp-lab-116 init.d]# rpm -e plymouth
>  error: Failed dependencies:
>         plymouth >= 0.6.0-0.2008.09.10.1 is needed by (installed)
>  mkinitrd-6.0.71-3.fc10.i386
>
>  Can we have mkinitrd to optionally use plymouth? If its there, build it in to
>  the initrd. Otherwise let a server boot in text mode since it doesn't have a
>  video display on it? 
Plymouth is a required part of the system. It's not just
graphical
boot, it's integral to text boot up, too (rc.sysinit hooks into it for
some reasons, it handles boot.log etc).

It could probably be made to not have a hard libpng dependency,
though.  In fact, I thought I fixed this already for Lennart, but
maybe I'm misremembering.  File a bug in bugzilla.

--Ray

[Steve Grubb]

On Wednesday 28 January 2009 01:19:59 pm Ray Strode wrote:
>  It could probably be made to not have a hard libpng dependency,
>  though.  In fact, I thought I fixed this already for Lennart, but
>  maybe I'm misremembering.  File a bug in bugzilla. 
OK, being able to drop libpng would be helpful - bz 482899.

Thanks,
-Steve