I have been using LVM on top of RAID 5 without any RAID related issues. You do want to use a current version of the LVM, as very old LVM versions may not deal with md devices correctly. The basic reason to use LVM on top of md is so that md can do the things it does well (striping/redundancy) and LVM can do the things it does well (volume resizing, for one). Both LVM and md are block remappers, so neither cares overmuch about what is above or below it. If you plan on using LVM's snapshot capability with Reiser, you will want to use the VFS lock patch. Dale Stephenson steph@snapserver.com - 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