On Wed, 14 Apr 2010 13:57:38 +0200 Tomáš Dulík <dulik@xxxxxxxx> wrote: > I have already started to write the documentation for this great feature > here: > https://raid.wiki.kernel.org/index.php/Hotplug Great - thanks for taking the initiative with that. However: All previous versions of mdadm were unable to remove disconnected or dead devices from md arrays. This is not corrrect. You can removed disconnected devices with: mdadm /dev/mdx --fail detached --remove detached will fail, then remove, all component devices on /dev/mdx which have been detached from the system. This has been possible since about 2.6.2. NeilBrown -- 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