>From what I assume looking on the disk app sd [bcde]1 is file system,
sd [bcde]2 is swap and sd [bcde]3 is data
root@Raid-on:~# mdadm --examine /dev/sdc3
/dev/sdc3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ba35c20f:00e99fb7:438a7341:dd60ea4a
Name : 7c6ee8d2:data-0
Creation Time : Sat Mar 12 10:39:04 2016
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5850830321 (2789.89 GiB 2995.63 GB)
Array Size : 8776244352 (8369.68 GiB 8986.87 GB)
Used Dev Size : 5850829568 (2789.89 GiB 2995.62 GB)
Data Offset : 261504 sectors
Super Offset : 8 sectors
Unused Space : before=261424 sectors, after=753 sectors
State : clean
Device UUID : d33abbf7:3e8bbf40:c6c1f306:32c93b10
Update Time : Thu Jul 12 12:08:02 2018
Checksum : da270dcd - correct
Events : 27162
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 1
Array State : AA.. ('A' == active, '.' == missing, 'R' == replacing)
root@Raid-on:~# mdadm --examine /dev/sdb3
/dev/sdb3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ba35c20f:00e99fb7:438a7341:dd60ea4a
Name : 7c6ee8d2:data-0
Creation Time : Sat Mar 12 10:39:04 2016
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5850830321 (2789.89 GiB 2995.63 GB)
Array Size : 8776244352 (8369.68 GiB 8986.87 GB)
Used Dev Size : 5850829568 (2789.89 GiB 2995.62 GB)
Data Offset : 261504 sectors
Super Offset : 8 sectors
Unused Space : before=261424 sectors, after=753 sectors
State : clean
Device UUID : e0bbecd9:223757af:3dfcac89:296ea8a3
Update Time : Thu Jul 12 12:08:02 2018
Checksum : 41161a2d - correct
Events : 27162
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 0
Array State : AA.. ('A' == active, '.' == missing, 'R' == replacing)
root@Raid-on:~# mdadm --examine /dev/sdd3
/dev/sdd3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ba35c20f:00e99fb7:438a7341:dd60ea4a
Name : 7c6ee8d2:data-0
Creation Time : Sat Mar 12 10:39:04 2016
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5850830321 (2789.89 GiB 2995.63 GB)
Array Size : 8776244352 (8369.68 GiB 8986.87 GB)
Used Dev Size : 5850829568 (2789.89 GiB 2995.62 GB)
Data Offset : 261504 sectors
Super Offset : 8 sectors
Unused Space : before=261224 sectors, after=753 sectors
State : clean
Device UUID : db67bc23:9c8c1498:44d9e2c8:1a3c0efe
Update Time : Thu Jul 12 00:29:40 2018
Bad Block Log : 512 entries available at offset 264 sectors
Checksum : d4a23f3 - correct
Events : 27155
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 3
Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)
root@Raid-on:~# mdadm --examine /dev/sde3
/dev/sde3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : ba35c20f:00e99fb7:438a7341:dd60ea4a
Name : 7c6ee8d2:data-0
Creation Time : Sat Mar 12 10:39:04 2016
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5850830321 (2789.89 GiB 2995.63 GB)
Array Size : 8776244352 (8369.68 GiB 8986.87 GB)
Used Dev Size : 5850829568 (2789.89 GiB 2995.62 GB)
Data Offset : 261504 sectors
Super Offset : 8 sectors
Unused Space : before=261224 sectors, after=753 sectors
State : clean
Device UUID : e3a165da:9422bcb7:829f1db7:a53be056
Update Time : Thu Jul 12 00:29:40 2018
Bad Block Log : 512 entries available at offset 264 sectors
Checksum : 2aa7b9bb - correct
Events : 27155
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 2
Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)
On Thu, Sep 20, 2018 at 10:36 PM François Goudal <francois@xxxxxxxxxx> wrote:
>
> Le 20/09/2018 à 22:19, Madalin Grosu a écrit :
> > Thank you François for your answer.
> > now the drives are connected to an hp workstation - Intel® Xeon(R) CPU
> > E5430 @ 2.66GHz × 4
> > I have a dual boot on machine with win 7 ultimate and Ubuntu 18.04.1 LTS
> > I think I put my drives in the correct order based on the logs from
> > my NAS and this is the point were I am in this moment
> >
> > [...]
>
> The order doesn't really matter. The disks have some metadata that will
> tell linux what their position within the array is. So Linux won't be
> looking at the disk order but will just look at this data in the superblock.
>
> At this point, I would guess that your md0 array is probably the NAS
> operating system. It is quite typical for NAS devices to install their
> OS on a raid1 volume that spreads on all the disks that are installed.
> My Synology NAS does this too. So, there's probably nothing interesting
> there. So the focus would have to be on the other volumes I think.
> More specifically, your data is likely to be in the md127 volume due to
> its much larger size.
>
> Can you please post the output of the following commands:
> mdadm --examine /dev/sdc3
> mdadm --examine /dev/sdb3
> mdadm --examine /dev/sdd3
> mdadm --examine /dev/sde3
>
> Also, at this point, do *not* run any command to re-assemble your raid
> volumes. First we need to properly understand what those arrays are for
> and in which precise state they are. Let's also hope your windows
> software didn't harm your data...
>
