Here's an interesting one for you Flexraid gurus.
The parity update had failed this morning.
Two DRU drives have gone MISSING. At the same time. How likely is that? Either they really died or the Norco backplane is borked (the other two drives in the row work fine though).
While waiting for replacements I thought I'd restore to two identical drives which are in the pool but 100% unused. So I figured I could remove the empty drives from the pool and then restore to them. Only the remove fails (same result regardless of which drive I try to remove).
The [<[update]>] task has successfully initiated...
Process number: 2
An exception has occurred! See logs for full message.
Error message: DRU4 has failed or is offline! - Please bring it online or recover it...
Name: Metadata Scanner Process
Start Date: Thu Jan 30 08:30:58 GMT+100 2014
End Date: Thu Jan 30 08:30:59 GMT+100 2014
Duration: 00:00:00 Throughput: N/A
DRU4 is one of the failed/missing drives. The pool is all 3 TB drives, 8 in all of which 2 are PPUs.
It looks like Flexraid requires an update be performed before it will remove a drive. Which obviously fails because of the two missing drives.
How can I now get the two empty drives out of the pool and restore to them? What will happen if I just yank the empty drives so they go "MISSING", re-format them and then restore to them? That ought to result in the two originally failed drives being restored and the two others (which had no data on them) being missing until I can get two new drives. Will that work or will the whole thing go south when Flexraid discovers FOUR missing drives?