I've recently came across several servers with different "strategies" for their /boot partition (btw, always as /dev/sda1, 512M)
Some servers use ext2 for /boot, some use ext3 for /boot, and for the latter some have turned off journaling or turned off journaling and added the sync option. I won't take relatime and similar in account since I don't believe those atime options are relevant here.
Are there any important and relevant differences between an ext2 partition and a ext3 partition with journaling turned off for a /boot partition? I believe that online file system growth and htrees have no use at all for a /boot partition and I don't see what else ext3 offers over ext2.
Would "sync" option be recommended if there is no journaling?
Does any of these setups stand out from the rest in terms of easy of administration in case of crash/panic/oops or performance wise?
Is there any general consensus on the partition/format type for such a small (512MB) /boot partition should be?