Sorry for the dup Phil, hit the wrong reply button. On 5/21/2013 7:02 PM, Phil Turmel wrote: ... > ...First is /dev/md1, a small (~500m) n-way > ...as /boot. The other, /dev/md2, uses > ...raid10,far3 or raid6. > > I put LVM on top of /dev/md2, with LVs for swap, ... /tmp Swap and tmp atop an LV atop RAID6? The former will always RMW on page writes, the latter quite often will cause RMW. As you stated your performance requirements are modest. However, for the archives, putting swap on a parity array, let alone a double parity array, is not good practice. -- Stan -- 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
