On Wed, Jul 24, 2013 at 12:35 PM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: > On 7/24/2013 12:07 PM, Roberto Spadim wrote: > >> Could i use ext3 or ext4 for boot filesystem? I need crash security (ok a >> ups is the best solution) xfs could be used too? > > Again, Roberto, a journaling filesystem is not necessary for /boot. It > will not make files in /boot any more crash resistant. Files in /boot > are only modified when you replace (upgrade) your kernel. Corruption > can only occur when file writes are in flight but not completely on > disk. Therefore, to corrupt files in /boot, the machine must crash or > lose power while you're installing a new kernel, i.e. within a window of > about 10 seconds. There are 31,536,000 seconds in a year. So the odds > of a crash/power loss during any one of your kernel upgrades are, if my > math is close, approximately > > 1 in 3,153,600 > +1 Also, at least on my personal systems, nothing resides on /boot that doesn't reside somewhere else under /. The kernels & associated files are in /usr/src. I periodically will copy grub.conf to /root for safe keeping. Personally I don't even back up /boot anymore as the biggest issue I always have if I lose a disk or make some horrible fat fingered mistake is to reinstall grub which (I believe to be true) won't be effected by the filesystem choice. Just my POV. Cheers, Mark -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
