Bug#591320: /etc/modprobe.d/initramfs.conf is lost
Package: initramfs-tools Version: 0.97.2 Blacklisting modules on the kernel command line doesn't work. If I set blacklist=bluetooth (just as an example), then the bluetooth module is still loaded. AFAICS the generated /etc/modprobe.d/initramfs.conf is not written to the root file system, i.e. the blacklist is lost. Regards Harri -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4c5665cc.2000...@aixigo.de
Bug#591320: /etc/modprobe.d/initramfs.conf is lost
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 This is the intended behaviour. Is this documented somewhere? This restriction would make the blacklist feature pretty useless, doesn't it? As soon as udev is started in single user mode (using /etc/modprobe.d found on root filesystem) all the blacklisted modules are no longer suppressed. In my case I get a bad acpi module crashing the system before single user mode is completely setup. What would you suggest? Of course I understand that this would be difficult to implement, since the root filesystem becomes writable very late in the boot procedure. Regards Harri -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxXNUMACgkQUTlbRTxpHjcq9QCaA+17o5ndz3L7E0SYN/CqQZDt cHwAn26NK54gb4Ek7Km5my8VGE8Pf+Kb =7pLJ -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4c573543.1040...@afaics.de
Bug#591320: /etc/modprobe.d/initramfs.conf is lost
On Mon, Aug 02, 2010 at 11:14:43PM +0200, Harald Dunkel wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 This is the intended behaviour. Is this documented somewhere? This restriction would make the blacklist feature pretty useless, doesn't it? As soon as udev is started in single user mode (using /etc/modprobe.d found on root filesystem) all the blacklisted modules are no longer suppressed. In my case I get a bad acpi module crashing the system before single user mode is completely setup. What would you suggest? Of course I understand that this would be difficult to implement, since the root filesystem becomes writable very late in the boot procedure. I'd suggest to have m-i-t parse the blacklist bootparam. the thing is this one is initramfs-tools specific dracut prefix rd to it marking it as a non linux-2.6 param. We didn't have that discussion yet. -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100802212826.gs19...@baikonur.stro.at
Bug#591320: /etc/modprobe.d/initramfs.conf is lost
On Mon, Aug 02, 2010 at 11:14:43PM +0200, Harald Dunkel wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 This is the intended behaviour. Is this documented somewhere? Not specifically, but the kernel parameters interpreted by the initramfs scripts generally do not apply to what the rest of the system does. Also, it seems wrong for the initramfs to dynamically modify the persistent system configuration. This restriction would make the blacklist feature pretty useless, doesn't it? No, see below. As soon as udev is started in single user mode (using /etc/modprobe.d found on root filesystem) all the blacklisted modules are no longer suppressed. In my case I get a bad acpi module crashing the system before single user mode is completely setup. What would you suggest? Of course I understand that this would be difficult to implement, since the root filesystem becomes writable very late in the boot procedure. You can use break=init to get a shell at the point where the real init is about to be started. Then you can add a blacklist file. (And you can remount the root rw if necessary.) You could perhaps report a wishlist bug on module-init-tools, requesting that modprobe should obey the 'blacklist' parameter on the kernel command line, perhaps using an init script to do something similar to what initramfs-tools does. Ben. -- Ben Hutchings We get into the habit of living before acquiring the habit of thinking. - Albert Camus -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100802215355.gr3...@decadent.org.uk
Bug#591320: /etc/modprobe.d/initramfs.conf is lost
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 08/02/10 23:53, Ben Hutchings wrote: On Mon, Aug 02, 2010 at 11:14:43PM +0200, Harald Dunkel wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 This is the intended behaviour. Is this documented somewhere? Not specifically, but the kernel parameters interpreted by the initramfs scripts generally do not apply to what the rest of the system does. Also, it seems wrong for the initramfs to dynamically modify the persistent system configuration. One could argue that moving from initrd mode to single user mode should be transparent. Next week the rest of the system might include other components. There is no second kernel started at boot time (AFAICS), so it might be reasonable to expect that the kernel command line arguments are not ignored later. Of course I understand that the blacklist is not a real kernel command line argument, but an argument to the init script on the initrd. You can use break=init to get a shell at the point where the real init is about to be started. Then you can add a blacklist file. (And you can remount the root rw if necessary.) Actually I don't want to change the persistent system configuration, either. The system is an universal USB boot stick with a local root file system. If I change /etc, then it might not boot on the next PC. I understand that there is a problem to get rid of the kernel command line blacklist later. Regards Harri -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxXm8wACgkQUTlbRTxpHjcdSwCeMzq1pChzz33tHWgv1BCxx/bn pEAAn0dntSDV1A0gnLtnUu3D/SBbAHkB =JW/g -END PGP SIGNATURE- -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4c579bd1.1040...@afaics.de
