Re: [CentOS] Mount removed raid disk back on same machine as original raid

Once upon a time, Bowie Bailey Bowie_Bailey@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).