Thanks Linus. We've restored this data from the backup and written off the missing day of data. Don't get me started on how a disk failure can occur... Our Tech Ops guys identified two drives and a controller which failed. The disk wasn't corrupted, it actually was able to rebuild once the bad drives were swapped. Somehow in the chaos, the cluster got corrupted and seemed to indicate that a member was part of the cluster, but couldn't find the member table. Once that occurred, it became impossible to manage, undo, destroy, list or in any way manipulate the cluster... Hopefully, by flagging this as answered, it'll go away and not waste anyone else's time.
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