Ansgar, Sorry but i cannot help you. You do not give me enough details, keep continue to say that OSCAR is broken even when i give you other points to investigate. Sorry i cannot do more based on the information i have and again, __ALL__ users how had similar issues (and i know about), the problem was because the kernel in the image is 2.6.18 based whereas the SystemImager kernel to image the node is > 2.6.19 (SATA naming issue and so on -- remember that selecting the SCSI template when creating the nodes may not be enough), or because the kernel shipped with RHEL was not working correctly on their platforms.
Regards, PS: for the kernel difference between the headnode and the compute nodes, we use online repositories for both of them. This is not an OSCAR issue, we do not enforce the version. So most certainly your headnode is not up-to-date or not using the same repositories, one of them being out-of-date. ----- Mail Original ----- De: "Ansgar Esztermann" <aesz...@gwdg.de> À: oscar-users@lists.sourceforge.net Cc: "geoffroy vallee" <geoffroy.val...@free.fr> Envoyé: Mardi 28 Avril 2009 05h44:16 GMT -05:00 USA/Canada - États de l'Est Objet: Re: [Oscar-users] 6.0.2, 6.0.3 and broken initrd Hi, On Apr 24, 2009, at 21:22 , geoffroy.val...@free.fr wrote: > Actually this is not the way SystemImager is working. The /etc/fstab > is not necessary to prepare and deploy the image. And actually, i do > not have any initrd issue with any of the platforms i am using. > Moreover, what is the OK. Then I probably do not understand where the initrd used to boot the deployed nodes comes from. There is one being generated when oscar installs the kernel into the image; but since there is no fstab at that point, it will not boot. During the course of the installation, systemconfigurator is called from the .master script. However, /usr/lib/systemconfig/Initrd.pm will generate an initrd only for kernels that do not already have one. > problem? When the system reboots, it cannot find the root file > system? If so, it is actually not an initrd issue but Yes. The first error message after reboot says that mkrootdev is expecting a filesystem option (in the initrd, it looks like this: mkrootdev -t -o defaults,ro Filesystem type and device are missing unless an fstab has been present during initrd creation. Later, the system will panic when trying to switchroot. > a problem based on the different between the kernel issue to image > the node and then the kernel used to boot the OK, maybe kernel versions are somehow mixed up. I have kernel-2.6.18-92.el5 in the image; this is not quite the same as the kernel on the master (kernel-2.6.18-92.1.22.el5), although it should be as far as I understand the docs: http://svn.oscar.openclustergroup.org/trac/oscar/wiki/SystemImager > compute nodes. Please, look at the SystemImager documentation or > give us more details about your configuration so we can try to help > you. I have looked at the wiki at systemimager.org, but I am a bit lost as to what to look for. Obviously, the initrd used to boot the node is not correct, but it is not clear to me at what point the initrd should be generated. Are there any specific parts of the SystemImager docs I should take a closer look at? As to my configuration, that should not be much out of the ordinary. CentOS 5.2 (now 5.3), Oscar unstable. The nodes are SATA-based, so I made sure to use /usr/share/oscar/oscarsamples/scsi.disk as a disk file. It is an x86_64 system. Is there anything else you would like to know? > PS: i also know for sure that few users solved booting issues with > CentOS-5.3 instead of CentOS-5.2, the kernel configuration is > slightly different and avoid issues on few platforms. CentOS-5.3 is > currently used by default if you are using the unstable repository. Yes, I am using unstable with 5.3. Thank you very much for your help, A. -- Ansgar Esztermann DV-Systemadministration Max-Planck-Institut für biophysikalische Chemie, Abteilung 105 ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ Oscar-users mailing list Oscar-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/oscar-users
