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unable to horizontally expand Raid5 (X-Raid) - identical hard drives
Firmware version 6.9.4 hot fix 1. readynas 314.
I did an OS reinstall recently just to start fresh after recovering from some data loss. I have 3×3 TB Western Digital discs that I am using in the unit. Before installing these discs I mounted them on my laptop and physically deleted any partitions that existed on all of the discs. Once completed I installed all three discs at the same time and the readynas 314 automatically set up the discs in a RAID five configuration (X-raid), synchronized in the discs, and was done. It's been working great ever since.
Yesterday I added another completely blank fresh out of the box identical hard drive as the other three discs. The disc synchronized successfully but I'm left with approximately 6 TB of storage space. I was expecting it to increase to 9 TB… At least that's what the manual tells me will happen. Did I miss something? Otherwise I'm going to have to backup everything, destroyed the RAID volume, rebuild it manually to get it to behave properly. At least that's what I think I've got to do. Am I missing something?
Kcp30228 wrote:
Yesterday I added another completely blank fresh out of the box identical hard drive as the other three discs. The disc synchronized successfully but I'm left with approximately 6 TB of storage space. I was expecting it to increase to 9 TB…
Yes, it should have expanded.
Try rebooting the NAS. If that doesn't trigger it, please download the log zip file and copy mdstat.log in a reply here.
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Kcp30228 wrote:
Yesterday I added another completely blank fresh out of the box identical hard drive as the other three discs. The disc synchronized successfully but I'm left with approximately 6 TB of storage space. I was expecting it to increase to 9 TB…
Yes, it should have expanded.
Try rebooting the NAS. If that doesn't trigger it, please download the log zip file and copy mdstat.log in a reply here.
I feel pretty silly about that now. That's the first thing I always tell everyone to do when there's a problem! Thanks a lot.
For this issue, that's typically safe. But for others, you can end up with the dreaded "remove unused volumes" error. So the first step is actually "update your backup".
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