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Bug#762007: marked as done (Kernel command line handling change breaks d-i user-params functionality)

Your message dated Sat, 11 Oct 2014 07:03:46 +0000
with message-id <E1XcqiQ-0000zp-Bi@franck.debian.org>
and subject line Bug#762007: fixed in debian-installer-utils 1.109
has caused the Debian Bug report #762007,
regarding Kernel command line handling change breaks d-i user-params functionality
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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-- 
762007: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=762007
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: debian-installer-utils
X-Debbugs-CC: debian-kernel@lists.debian.org

(CCing debian-kernel just FYI, since I don't think this can/should be
fixed with a kernel change, likewise filing against
debian-installer-utils and not the kernel even though a kernel change
introduced the breakage)

A recent change to the kernel[0] (from v3.15 onwards) has changed the
way the kernel handles its command line, such that it now ignores
anything passed after a "--" marker. This has broken d-i's own use of
that marker which was to separate options intended for the installer
only (before the marker) from those which are intended to be both
consumed by the d-i kernel and propagated to the final installation
(after the marker, returned by the user-params utility).

It used to be that you could do:
        vmlinuz some/preseed=value -- console=ttyFOO
which would have the dual affect of having the kernel console (and hence
installer UI) run on ttyFOO and also, via grub-installer's use of
user-params, propagate the console=ttyFOO into the final grub config
(similarly for other bootloaders).

With the kernel change this no longer works -- the kernel doesn't put
its console on ttyFOO since it stops parsing at the --. So you get
silence on boot.

To get the old behaviour you need
        vmlinuz some/preseed=value console=ttyFOO -- console=ttyFOO
which is pretty tedious.

Just using
        vmlinuz some/preseed=value console=ttyFOO
doesn't propagate the console=ttyFOO to the installed system.

Since the kernel change was related to the "systemd abusing kernel
cmdline" debacle I'm not overly keen on raising this upstream and I
don't think that changing the kernel in a way which diverges from
upstream would not be the right approach here.

I don't know how widely used/documented/Supported this ability was, but
I thought e.g. the pxe and isolinux cfgs made use of it.

Not sure what we can do about this. Perhaps choose another separator
("=="?) and make user-params support both?

Ian.

[0] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51e158c12aca3c9ac63988611a97c05109b14dc9

--- End Message ---
--- Begin Message --- 
Source: debian-installer-utils
Source-Version: 1.109

We believe that the bug you reported is fixed in the latest version of
debian-installer-utils, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 762007@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Christian Perrier <bubulle@debian.org> (supplier of updated debian-installer-utils package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Sat, 11 Oct 2014 07:41:14 +0200
Source: debian-installer-utils
Binary: di-utils-shell di-utils-reboot di-utils-exit-installer di-utils di-utils-mapdevfs di-utils-terminfo
Architecture: source all i386
Version: 1.109
Distribution: unstable
Urgency: medium
Maintainer: Debian Install System Team <debian-boot@lists.debian.org>
Changed-By: Christian Perrier <bubulle@debian.org>
Description:
 di-utils   - Miscellaneous utilities for the debian installer (udeb)
 di-utils-exit-installer - Exit installer (udeb)
 di-utils-mapdevfs - mapdevfs utility for the debian installer (udeb)
 di-utils-reboot - Reboot (udeb)
 di-utils-shell - Execute a shell (udeb)
 di-utils-terminfo - Terminfo entries needed by newt/slang in debian installer (udeb)
Closes: 762007
Changes:
 debian-installer-utils (1.109) unstable; urgency=medium
 .
   [ Ian Campbell ]
   * Accept "---" as user-params separator in addition to "--" (Closes: #762007)
Checksums-Sha1:
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Files:
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 021bdb9e8ad1a79aa4018bc722a00bdc 2372 debian-installer standard di-utils-mapdevfs_1.109_i386.udeb
 935ec96f5dc113ac408bd945deb44498 2434 debian-installer standard di-utils-terminfo_1.109_i386.udeb

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