Hi!
After a network wide power surge our Open-E Server went down and the logical volumes were not available.
The server recovered only with one volume temporally available, which failed some weeks later.
It was possible to recover LV00 and reconstruct the file-systems and shares.
However, LV01 and LV02 could not be recovered and the entries are showing reserved space, but no data. Recovery of the LV with the existing entries from the console failed and hence no files could be accessed. All entries and logs are still accessible from lv00, though.
A colleague tried to redefine LV10, which now shows no usage (100% empty) while LV20 is still fully used.

Is there a way to recover the two volumes and how shall we proceed?
Are there any tools or experts that can investigate this issue?
Best regards!

--- Server specs:
Model: Open-E NAS ENTERPRISE
Version: 1.89.E000000000.2024
Release date: 2006-07-05
S/N: 0215875113
--- 3ware drive reports:
Unit 0 (Controller ID 0)
Status OK
Name
Serial # Y10566390D99B8005197
Capacity 4.00 TB
Type RAID 5
Stripe 64kB
Volumes 3
Subunits 12

Unit 0 (Controller ID 1)
Status OK
Name
Serial # 3QD0X6ZKEE39EF00693E
Capacity 2.05 TB
Type RAID 5
Stripe 64kB
Volumes 1
Subunits 4

---Unit manager report
Unit Size (GB) Status
Unit S0 2048.00 in use, vg0
Unit S1 2048.00 in use, vg1
Unit S2 1.70 NOT SUPPORTED
Unit S3 2040.00 in use, vg2

--- Logical volumes
lv00
Usage: 92 % 1804.80 / 1950.84 GB (Free: 146.04 GB)

Total snapshots: 0. In use: 0.

lv10
Usage: 0 % 0.01 / 2043.81 GB (Free: 2043.80 GB)

Total snapshots: 0. In use: 0.

lv20
Usage: % 0.00 / 0.00 GB (Free: 0.00 GB)

Total snapshots: 0. In use: 0.