Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hi, The Initrd and Ram disk support in linux kernel along with JFFS2 related stuff solved the problem related to reboot. Sorry Stuart ... for using wrong forum for discussion But It will be very helpful if you have a special forum for OS related issues ... Thanks for having discussion with me ... Regards, ** Bhagyashri Katole Project Engineer NISG, C-DAC Pune,India ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hello Bhagyashri, On Fri, 2007-09-28 at 10:08 +0530, Bhagyashri Katole wrote: Hi , So the problem seems to lie within the kernel - after all it's the kernel that reboots, not Lilo (AFAIK Lilo can't do that). Kernels have bugs too. But , I tried same kernel image to boot my computer, it worked fine ... Bug here doesn't necessarily mean a programming error. It could be some deeply nested anomaly in the communication between kernel, chipset and/or CPU, leading to errors that are very hard to trace, and the blame might lie with the hardware and not the kernel. The kernel boot options seem to be passed properly, and you don't get the OK, booting.. message. If you dig into the docs, you'll probably find that things go wrong while the kernel tries to relocate itself and tries to execute the unpacking routines, (I haven't been keeping myself up to data with the Linux kernel and its boot process, but that's at least how it used to happen - interesting stuff anyway). The case I referred to involved a 2.4* kernel running fine on anything except one particular machine (as: motherboard/CPU combination). Another [minor] kernel version ran without a problem. The unlucky kernel was compiled by the RedHat company, by the way. In such a case trying a different kernel version is a lot quicker and easier than trying to debug the current one. I personally wouldn't even be bothered to file a bug report. So there's the whole story - hope you'll agree that trying to boot from another kernel is definitely a worthwhile, and relatively easy, option. If something runs on 1 machine, that's no guarantee that it will run on another. The proof is in the pudding, or the Soekris box in this case. Just for clarity and disambiguation: when I wrote about configuring the system for serial output, I meant setting the appropriate entry in /etc/inittab: # Run agetty on COM1/ttyS0 s0:2345:respawn:/sbin/agetty -L -f /etc/issueserial 9600 ttyS0 vt100 That's just an example of course. [Mmm.. just discovered that my Ubuntu 6.10 doesn't have an inittab anymore. Yet another well-known standard config file chopped up by those smart Linux maintainers. Now lives in /etc/event.d/, as a collection of chunks. Another 10.000 docs or so outdated. Those guys/gals are crazy!;] Bill All jffs2 modules got inserted properly Not even that I am using same kernel image now... You could try fdisk-ing the CF again with the real CHS values the Soekris combios sees as args to fdisk. Still, Lilo would usually display as screenful of 0x0N's if it fails to load the kernel I will definitely try this option today ... Hope I will get an error this time to figure out where I am going wrong .. Thanks ... Have a Gr8 day .. -- Regards, ** Bhagyashri Katole Project Engineer NISG, C-DAC Pune,India ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
On Fri, 2007-09-28 at 08:50 +0300, Jussi Peltola wrote: Hi, On Fri, Sep 28, 2007 at 10:08:10AM +0530, Bhagyashri Katole wrote: But , I tried same kernel image to boot my computer, it worked fine ... All jffs2 modules got inserted properly Not even that I am using same kernel image now... Your computer probably isn't a Soekris - unfortunately not all x86 CPUs are equal, and a kernel built for a new one may not work on an older one because of optimizations using extended instruction set features etc. Of course, I overlooked that option: RedHat has been shipping kernels optimized for 686 for years. Isn't it about time to publish a FAQ about trivia like this (disk geometry issues, set OS to serial I/O, no, you currently can't boot off USB etc..)? And yes, I know, it's not Soekris' responsability etc., but most people who buy a Soekris box plan to run an OS on it. Referring [new] Soekris owners to such a document would at least be a bit friendlier than the usual search the archives. User base could supply OS-specific details, hosting and manpower for coordination and maintenance (I could spare a few hours every now an then..) Where there's a list, there's usually a FAQ, so why not here. [expect some heat..] Bill Unfortunately debugging this kind of problem is painful since you only get to know the kernel didn't work :) Regards, Jussi Peltola ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hi, On Thu, Sep 27, 2007 at 11:23:14AM +0530, Bhagyashri Katole wrote: /boot/fstab as follows /dev/mtdblock0 / jffs2 defaults,rw,noatime,sync0 0 /dev/hda1 /boot ext2defaults,rw,sync,noatime1 1 /boot/fstab? What is that? And what is /dev/mtdblock0? I didn't know the Soekris boards have MTDs... I prepared JFFS2 partition with RootFS .. What is RootFS? Some kind of utility? When Soekris net4521 boots, it does nothing after ... LILO loading Linux ... Did you re-run lilo? How is your lilo config? We need more information to really find out where the problem is, please explain what you exactly are trying to do and what you have done to get there. -- Regards, Jussi Peltola signature.asc Description: Digital signature ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hello Bhagyashri, no error messages so Linux is probably getting up and running well. You probably have configured the boot loader to talk to the appropriate com port, but this doesn't get passed to the kernel so the kernel output is sent to nowhere (or at least nowhere you can find it;). Of course I can't be sure, but I guess you should be looking in that direction first. Also make sure that your system is configured for serial output, or you will have a similar problem once the kernel has booted. I don't think JFFS has anything to do with it, since the kernel lives inside /boot (?). If Lilo had a problem loading the kernel, it would display an error message anyway. Bill On Thu, 2007-09-27 at 11:23 +0530, Bhagyashri Katole wrote: Hi , I am trying to boot Soekris net4521 using CF with combination of EXT2 and JFFS2 filesystems. I made boot partition using LILO boot loader and EXT2 filesystem. /boot/fstab as follows /dev/mtdblock0 / jffs2 defaults,rw,noatime,sync0 0 /dev/hda1 /boot ext2defaults,rw,sync,noatime1 1 I prepared JFFS2 partition with RootFS .. When Soekris net4521 boots, it does nothing after ... LILO loading Linux ... Please help me to solve this problem if someone tried this combination before .. Thanks in advance, Bhagyashri Katole Project Engineer, NISG, C-DAC,Pune ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Bhagyashri Katole wrote: Now LILO reboots continuously after msg LILO loading Linux . Any chance you had the geometry wrong/different when creating the partitions (since you probably did the installation on a different computer)? Or does that even apply to CF? -- Tuomo ... A little inaccuracy sometimes saves tons of explanation ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Bhagyashri Katole wrote: Any chance you had the geometry wrong/different when creating the partitions (since you probably did the installation on a different computer)? I did not get any error while preparing and mounting JFFS2 partitions on different computer .. I successfully copied RootFS on 2nd partition ... Did you try booting off it? That's the real test. -- Tuomo ... You can lead a horse to water, but if you can get him to float on his back, you've really got something ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hi , So the problem seems to lie within the kernel - after all it's the kernel that reboots, not Lilo (AFAIK Lilo can't do that). Kernels have bugs too. But , I tried same kernel image to boot my computer, it worked fine ... All jffs2 modules got inserted properly Not even that I am using same kernel image now... You could try fdisk-ing the CF again with the real CHS values the Soekris combios sees as args to fdisk. Still, Lilo would usually display as screenful of 0x0N's if it fails to load the kernel I will definitely try this option today ... Hope I will get an error this time to figure out where I am going wrong .. Thanks ... Have a Gr8 day .. -- Regards, ** Bhagyashri Katole Project Engineer NISG, C-DAC Pune,India ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hi, On Fri, Sep 28, 2007 at 10:08:10AM +0530, Bhagyashri Katole wrote: But , I tried same kernel image to boot my computer, it worked fine ... All jffs2 modules got inserted properly Not even that I am using same kernel image now... Your computer probably isn't a Soekris - unfortunately not all x86 CPUs are equal, and a kernel built for a new one may not work on an older one because of optimizations using extended instruction set features etc. Unfortunately debugging this kind of problem is painful since you only get to know the kernel didn't work :) Regards, Jussi Peltola ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
[Soekris] Combination of EXT2 JFFS2 (as RootFS) don't boot Soekris net4521
Hi , I am trying to boot Soekris net4521 using CF with combination of EXT2 and JFFS2 filesystems. I made boot partition using LILO boot loader and EXT2 filesystem. /boot/fstab as follows /dev/mtdblock0 / jffs2 defaults,rw,noatime,sync0 0 /dev/hda1 /boot ext2defaults,rw,sync,noatime1 1 I prepared JFFS2 partition with RootFS .. When Soekris net4521 boots, it does nothing after ... LILO loading Linux ... Please help me to solve this problem if someone tried this combination before .. Thanks in advance, Bhagyashri Katole Project Engineer, NISG, C-DAC,Pune ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
