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Jan 27, 2023

ReadyNAS 316 (6x4TB Enterprise) - No volumes after graceful shutdown and restart

I shutdown my RN316 while leaving for a few days. Upon restart, I was able to connect and access normally. However after about 15 minutes when I tried to save a file to the NAS I was not able to access the Windows share any longer. A message was flashing on the LCD screen of the drive saying, "Data Degraded". I opened the web interface and saw that all drives were healthy so I performed a software reboot. Now I'm getting a message that "No Volumes Exist". I downloaded the Log files and checked mdstat.log but don't see anything abnormal. I tried to contact support to get help or purchase a support contract but keep getting rerouted to the "Community". I have most data backed up to my other Netgear NAS's but only current up to last November.

Is there any way to re-enable the existing volumes myself or can I purchase a support option from Netgear?

Thanks for any and all suggestions.

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StephenB
Guru - Experienced User
Jan 27, 2023
Are you seeing any disk errors or btrfs errors in system.log, kernel.log, systemd-journal.log?
- RT6507
  Tutor
  Jan 28, 2023
  Hi StephenB
  Thanks for pointing me to those logs and taking the time to review this. .
  From Systemd-journal.log:
  "Jan 26 10:14:12 NAS_IV kernel: md/raid:md1: raid level 6 active with 6 out of 6 devices, algorithm 2"
  (It looks like on bootup all 6 drives started up ok. Then...)
  
  " Jan 26 10:14:12 NAS_IV kernel: BTRFS: device label 7c6e3b76:root devid 1 transid 4240856 /dev/md0"
  (I think this must have been a failure on Raid Disk 1, because next I see ...)
  
  "Jan 26 10:14:12 NAS_IV kernel: md: kicking non-fresh sdf3 from array!"
  (There is no matching BTRFS error for this Raid Drive 5, but next I see...)
  
  "Jan 26 10:14:12 NAS_IV kernel: md/raid:md127: not enough operational devices (2/6 failed)"
  (Followed by unbind and export_rdev for each drive.)
  - StephenB
    Guru - Experienced User
    Jan 28, 2023
    RT6507 wrote:
    
    "Jan 26 10:14:12 NAS_IV kernel: md: kicking non-fresh sdf3 from array!"
    
    (There is no matching BTRFS error for this Raid Drive 5, but next I see...)
    
    "Jan 26 10:14:12 NAS_IV kernel: md/raid:md127: not enough operational devices (2/6 failed)"
    
    (Followed by unbind and export_rdev for each drive.)
    
    Any idea on what the second missing disk might be?