On Fri, Oct 31, 2003 at 09:28:42AM +0100, Luca Berra wrote: > Btw i recall reading somewhere that grub actually modifies the disk it > is booting from if luser wants to change the kernel command line. > I dunno if it is true or not, and i am too lazy to read the source. Can > anyone confirm or deny that? That was me. It may not be true, because I haven't had time and a a spare machine to verify. The symptom that we see is that /boot/grub/stage2 sometimes becomes desynchronized between the RAID1 partitions after a reboot. Every night we compare file MD5 sums temporally (day-over-day) and spatially (between "identically" configured machines). In the event that a file block is desynchronized, we will typically see the MD5 oscillate between two values, depending on which drive MD chose to populate the cache. An MD resync of /boot cures the problem. Since this only seems to occur with /boot/grub/stage2, I've ruled out most other theories. We reboot a machine so infrequently that I've only seen this three times in more than a year, so I haven't been motivated to track it down. Regards, Bill Rugolsky - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
