Once upon a time, Bowie Bailey <Bowie_Bailey at BUC.com> said: > What is going to happen when I try to mount a drive that the system > thinks is part of an existing array? I don't _think_ anything special will happen - md RAID doesn't go actively looking for drives like that AFAIK. And RAID 1 means you should be able to ignore RAID and just access the contents directly. However, the contents could still be a problem. If LVM was in use on it, that will be a problem, because LVM does auto-probe and will react when it sees the same UUID (IIRC LVM will only block access to the newly seen drive). I don't think any filesystems care (I know I've mounted snapshots of ext4 and IIRC xfs on the same system, haven't touched btrfs). -- Chris Adams <linux at cmadams.net>