NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
RN31400: data DEAD, All drive showing NEW healthy on reboot
NAS was showing 'data Dead' on LCD on inspection after noticing that it wasn't working. Turned it off and restarted the box. Rebooted, admin suite has the notification 'Remove inactive volumes to use the disk. Disk #1,2,3,4.' Turned off box overnight. Turned on this morning, LCD giving messages such as new disk added, however disks are untouched. Ultimately booted into safemode this time. Have run OS Reinstall, no change.
Under volumes:
- my original 'data' volume shows data 0, Free: 0, Type: RAID unknown.
- new 'data-0' volume that has appeared shows data 8.17 TB, Free: 0, Type: RAID 5.
- All four disks showing no errors, giving Volume State: NEW & Disk State: ONLINE on each
Is there a way to rebuild the data volume?
Logs:
Spoiler
| Sep 15, 2020 09:56:29 AM | System: ReadyNASOS background service started. | |
| Sep 15, 2020 09:56:29 AM | System: Firmware was upgraded to 6.10.3. | |
| Sep 15, 2020 09:56:26 AM | System: ReadyNASOS service or process was restarted. | |
| Sep 15, 2020 09:43:43 AM | System: ReadyNASOS background service started. | |
| Sep 14, 2020 08:58:54 PM | System: Alert message failed to send. | |
| Sep 14, 2020 08:58:54 PM | System: The system is shutting down. | |
| Sep 14, 2020 08:54:11 PM | System: ReadyNASOS background service started. | |
| Sep 14, 2020 08:51:08 PM | System: Alert message failed to send. | |
| Sep 14, 2020 08:51:08 PM | System: The system is rebooting. | |
| Sep 14, 2020 08:43:49 PM | System: ReadyNASOS background service started. | |
| Sep 14, 2020 08:43:25 PM | System: ReadyNASOS service or process was restarted. | |
| Sep 12, 2020 09:39:49 PM | Disk: Disk in channel 3 (Internal) changed state from ONLINE to RESYNC. | |
| Sep 12, 2020 09:39:39 PM | Disk: Disk Model:WDC WD30EFRX-68EUZN0 Serial:WD-WCC4N6EXP6UL was added to Channel 3 of the head unit. | |
| Sep 12, 2020 09:35:38 PM | Disk: Disk in channel 1 (Internal) changed state from RESYNC to ONLINE. | |
| Sep 12, 2020 09:32:32 PM | Disk: Disk Model:WDC WD30EFRX-68EUZN0 Serial:WD-WCC4N4VF5VFL was added to Channel 1 of the head unit. | |
| Sep 12, 2020 09:28:24 PM | Disk: Disk Model:WDC WD30EFRX-68EUZN0 Serial:WD-WCC4N6EXP6UL was removed from Channel 3 of the head unit. | |
| Sep 12, 2020 09:24:23 PM | Volume: Volume data health changed from Redundant to Dead. | |
| Sep 12, 2020 09:24:21 PM | Disk: Disk Model:WDC WD30EFRX-68EUZN0 Serial:WD-WCC4N4VF5VFL was removed from Channel 1 of the head unit. | |
| Sep 12, 2020 12:23:49 AM | Snapshot: Snapshot prune worker successfully deleted snapshot 2020_07_18__00_00_20 from share or LUN Transmission. | |
| Sep 12, 2020 12:00:25 AM | Snapshot: Snapshot c_1599868825 was successfully created for share or LUN Transmission. |
I don't think the NAS retains any state on this, other than what btrfs itself retains.
What you need to do is forcibly mount the array, and perhaps also attempt to repair the file system. This isn't something I've ever needed to do, so I can't really offer much advice.
If you boot up in tech support mode, you could try
# rnutil chroot # btrfs device scan # btrfs fi show # mount -t btrfs -o ro,recovery /dev/md127 /data
If you just go into ssh with the NAS running, then you'd skip the rnutil command.
One user here successfully used that mount command to mount a missing volume. If it works then it will mount the volume read-only so you'd need to offload the data.
12 Replies
Replies have been turned off for this discussion
Since you have access to the data, I think you are far better off doing a backup, factory default, and restore. I would not trust that you have taken care of every possible detail if you manually try to re-build the configuration files. And if you haven't, future expansion could be problematic.
FYI "data-0" is the name of the first MDADM RAID that makes up BTRFS volume "data". If you have two layers of RAID (from vertical expansion in the past), you may have "lost" the second one (data-1).
Sandshark Thank you for your reply. Your help is utterly invaluable! I'm not sure I understand. I've only really looked at the web admin suite showing the following: https://i.imgur.com/MNs02tZ.jpg
The four identical drives have been in from the start, RAID 5 and at this point I will have no interest in expanding the device in the future. This box was chosen to avoid this kind of time sink, if a drive failed, slap in a new one and forget was intended. :( As you can see above when it was working I only had 'data' volume as RAID 5 with the usage tallied.
When it comes to backing up and reseting as you mention, how do I have access to data? Is there a process/guide that you could recommend? (sorry I am having difficulty googling this issue!) I'm guessing that the backup will probably requires roughly 4TB, I'll need to have that space available elsewhere... Could be time to get a new nas and put this one on ebay?
I'd love to know why the software decided that any hard drives disconnected considering the device is locked in a ventilated cupboard and only I have the key. Hey ho. :/
Retired_Member wrote:
When it comes to backing up and reseting as you mention, how do I have access to data?
I think Sandshark was for some reason assuming that you did still have access to the data.
Retired_Member wrote:
I've only really looked at the web admin suite showing the following: https://i.imgur.com/MNs02tZ.jpg
Can you download the full log zip file (click on the logs page and you'll see a download control)?
The full disk smart stats are in disk_info.log, so you might look at those.
It would also be useful if you copy/paste mdstat.log into a reply here. It's best if you use the </> tool in the toolbar.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
