PR4100 Raid no longer setup after auto firmware update

My Cloud OS 5 Personal & Network Attached Storage My Cloud Pro Series
1

The NAS auto updated, thought I had this turned off, on 1/12/23. The current installed firmware as reported is 5.26.119. I received an Alert: Volume Failure email stating that “The data volume 1 on the drive is not accessible.” email as well.

Looking at the dashboard the Raid array is indeed not listed, no volumes are present, and no space is available. All 4 drives report as healthy and a Full Test comes back good. I have done a System Only Restore. I have also created a support ticket and sent them all the same information, they are taking a while to respond though so thought I would cast the net a little wider.

I have access to Putty and WinSCP and know how to SSH to the device but am not even a passable linux command user. Help?

2

Hi @geekswrath,

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:
https://support-en.wd.com/app/ask

3

Yes, I opened a ticket before putting this post up, 230112-004682.

4

From dmesg, can see errors related to corruption. Hence md1/volume_1 is not available.

[ 116.474779] EXT4-fs (md1): ext4_check_descriptors: Block bitmap for group 0 overlaps superblock
[ 116.484518] EXT4-fs (md1): ext4_check_descriptors: Inode bitmap for group 0 overlaps superblock
[ 116.494249] EXT4-fs (md1): ext4_check_descriptors: Inode table for group 0 overlaps superblock
[ 116.503880] EXT4-fs (md1): ext4_check_descriptors: Checksum for group 0 failed (45353!=0)
[ 116.513015] EXT4-fs (md1): group descriptors corrupted!
[ 117.566444] EXT4-fs (md1): ext4_check_descriptors: Block bitmap for group 0 overlaps superblock
[ 117.576184] EXT4-fs (md1): ext4_check_descriptors: Inode bitmap for group 0 overlaps superblock
[ 117.585914] EXT4-fs (md1): ext4_check_descriptors: Inode table for group 0 overlaps superblock
[ 117.595548] EXT4-fs (md1): ext4_check_descriptors: Checksum for group 0 failed (45353!=0)
[ 117.604724] EXT4-fs (md1): group descriptors corrupted!
[ 118.679099] md1: detected capacity change from 5988307894272 to 0
[ 118.685929] md: md1 stopped.

user.log shows that data volume 1 is not accessible.

2023-01-12T11:21:31.269905-08:00 di=w3Vs7E2aj9 2 MyCloudPR4100 DISK: The data volume 1 on the drive is not accessible.

Recommendation:

Would recommend performing file system check through cli, Volume is already unmounted so directly run File System Check. Step 5.

My Cloud: Scan Disk File System Check and Repair
https://support-en.wd.com/app/answers/detailweb/a_id/30057

If the super-block is corrupted, and there is a back copy of the data, create a new RAID Volume and restore the data from the backup.

If there are no backup copies of the data in another location, please contact one of Western Digital Data Recovery Partners to prevent the loss of your data, or attempt to extract the data using below KB

My Cloud: How to Extract and Retrieve Data
https://support-en.wd.com/app/answers/detailweb/a_id/24823

5

This is what I get when running the command from step 5 in the link provided.

e2fsck: No such file or directory while trying to open /dev/md1
Possibly non-existent device?