Hello On some CPU's & chipsets there are a posibility for a watchdog. Primarily for embedded environments. I know about one patch where Grub has been changed to use a certain watchdog implementation to guard the boot process and fallback to a failsafe boot entry.
The basic idea is that grub enables the watchdog, and if the kernel does not succed, and starts to feed the dog, then the CPU will reboot, and grub will read in some registers that the watchdog killed the last boot, and thus it will go for the fallback. The reason for combining the watchdog with grub, is to increase system stability when upgrading the kernel or other software. If the upgrade fails, then grub should save the day, and bring the system up in a state where new software can be loaded. Now my question is, should such a patch go into the grub source. Or, is it better to put the watchdog into a kernel module, which then is loaded by grub. Is this kernel approach doable at all. --------------------- With Regards ------------------ Kjeld Flarup (Christensen), Specialist, Software Architecture and Technology Ericsson Danmark A/S, PDU MSA Faelledvej 17, DK-7600 Struer, Phone +45 97 86 94 10, Fax +45 97 85 44 22 -----------------------------------| A small but great part of Ericsson | _______________________________________________ Bug-grub mailing list Bug-grub@gnu.org http://lists.gnu.org/mailman/listinfo/bug-grub
