Can't mount array in ubuntu following the officially synology data recovery guide

Hardware Hub Storage
1

I pulled 8 drives out of a working synology unit. The drives are good but I no longer have the synology. They were a shr5 btrfs raid with no encryption only 1 storage pool/volume for all drives DSM v7.1. I don’t need RW access, if I can mount read only that will work.

I followed each step in the synology official guide (cant link it).

kb.synology DOT com/en-us/DSM/tutorial/How_can_I_recover_data_from_my_DiskStation_using_a_PC

When I try to run the first mdadm command (step 11 in their guide) it fails and prints “mdadm: No arrays found in config file or automatically.”

fdisk -l output:

Disk /dev/sda: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 1F6155F2-4057-47E0-8EEE-146C4FE45620

Device       Start        End    Sectors  Size Type
/dev/sda1     2048    4982527    4980480  2.4G Linux RAID
/dev/sda2  4982528    9176831    4194304    2G Linux RAID
/dev/sda5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sdb: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 06963498-AB74-49F5-AD88-2ACFBBFF593A

Device       Start        End    Sectors  Size Type
/dev/sdb1     2048    4982527    4980480  2.4G Linux RAID
/dev/sdb2  4982528    9176831    4194304    2G Linux RAID
/dev/sdb5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sdc: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: CF965790-5FB6-4058-AC97-48D1E856B8FD

Device       Start        End    Sectors  Size Type
/dev/sdc1     2048    4982527    4980480  2.4G Linux RAID
/dev/sdc2  4982528    9176831    4194304    2G Linux RAID
/dev/sdc5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sdd: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 493AAED9-917E-46BD-84E4-1F9247325F1F

Device       Start        End    Sectors  Size Type
/dev/sdd1     2048    4982527    4980480  2.4G Linux RAID
/dev/sdd2  4982528    9176831    4194304    2G Linux RAID
/dev/sdd5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sde: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 82CE97A9-FBE2-410F-863D-1C055ED315B7

Device       Start        End    Sectors  Size Type
/dev/sde1     2048    4982527    4980480  2.4G Linux RAID
/dev/sde2  4982528    9176831    4194304    2G Linux RAID
/dev/sde5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sdg: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: FC79D7BE-BB98-4196-BC98-DA61E9941ADF

Device       Start        End    Sectors  Size Type
/dev/sdg1     2048    4982527    4980480  2.4G Linux RAID
/dev/sdg2  4982528    9176831    4194304    2G Linux RAID
/dev/sdg5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sdf: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 20593F34-7781-4506-9CF6-44DC77684480

Device       Start        End    Sectors  Size Type
/dev/sdf1     2048    4982527    4980480  2.4G Linux RAID
/dev/sdf2  4982528    9176831    4194304    2G Linux RAID
/dev/sdf5  9453280 7813830239 7804376960  3.6T Linux RAID


Disk /dev/sdh: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 7509D6B6-4B08-4DCB-A2AF-5EBDE71A7345

Device       Start        End    Sectors  Size Type
/dev/sdh1     2048    4982527    4980480  2.4G Linux RAID
/dev/sdh2  4982528    9176831    4194304    2G Linux RAID
/dev/sdh5  9453280 7813830239 7804376960  3.6T Linux RAID

Would love to know where to go from here. Thanks.

1 Like
2

I’ve built a couple arrays with madam that are still running after years. I’ll first start by asking. Did you have a backup of the conf file for the array from the previous system?

1 Like
3

No config file. Synology everything was done through their UI and I didn’t have access to any config files.