Raid missing

Hello,

I need help to get access to my files. And i don't know a lot of linux and openmediavault.

At file system 1 is missing and at raid managment no raid showing.

My openmediavault server give a error at statup dat 2/6 is missing.

I use 6 x 2TB HDD's

cat /proc/mdstat
blkid
fdisk -l
cat /etc/mdadm/mdadm.conf
mdadm --detail --scan --verbose

--

Linux Openmediavault 3.2.0-4-amd64 #1 SMP Debian 3.2.82-1 x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat Dec 31 16:56:29 2016 from imac-van-admin.local
root@Openmediavault:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md127 : inactive sdb[0] sdg[6] sdc[2] sdd[1]
7813534048 blocks super 1.2

unused devices: <none>
root@Openmediavault:~# blkid
/dev/sda: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="f9995c81-e25f-5306-0545-bb55ed5bf231" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
/dev/sdb: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="7ba84afc-cbaf-95c8-273b-95c46029f319" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
/dev/sdc: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="8c17bae1-8806-02e3-4a17-ba9db88d510d" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
/dev/sdd: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="9e1d2a45-9702-4606-d73b-bc636ee05981" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
/dev/sde1: UUID="9f48ea5d-024f-4ac9-ae55-dc288a4cef7d" TYPE="ext4"
/dev/sde5: UUID="e6a7fe70-317b-4bfe-9649-3787d10870bc" TYPE="swap"
/dev/sdf: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="d6b86b4b-2d86-071f-7ca2-61d094ffe431" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"
/dev/sdg: UUID="8d0e9d31-bcc8-49d8-ce99-3361758f4626" UUID_SUB="cf97f189-3073-83f1-9558-eddc01ff6c77" LABEL="Openmediavault:NasDiskRaid" TYPE="linux_raid_member"

root@Openmediavault:~# fdisk -l

Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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
Disk identifier: 0x00000000

Disk /dev/sdb doesn't contain a valid partition table

Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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
Disk identifier: 0x00000000

Disk /dev/sdc doesn't contain a valid partition table

Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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
Disk identifier: 0x00000000

Disk /dev/sda doesn't contain a valid partition table

Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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
Disk identifier: 0x00000000

Disk /dev/sdd doesn't contain a valid partition table

Disk /dev/sdf: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/sdf doesn't contain a valid partition table

Disk /dev/sdg: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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
Disk identifier: 0x00000000

Disk /dev/sdg doesn't contain a valid partition table

Disk /dev/sde: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000e89e8

Device Boot Start End Blocks Id System
/dev/sde1 * 2048 468553727 234275840 83 Linux
/dev/sde2 468555774 488396799 9920513 5 Extended
/dev/sde5 468555776 488396799 9920512 82 Linux swap / Solaris
root@Openmediavault:~# cat /etc/mdadm/mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#

# by default (built-in), scan all partitions (/proc/partitions) and all
# containers for MD superblocks. alternatively, specify devices to scan, using
# wildcards if desired.
#DEVICE partitions containers

# auto-create devices with Debian standard permissions
CREATE owner=root group=disk mode=0660 auto=yes

# automatically tag new arrays as belonging to the local system
HOMEHOST <system>

# instruct the monitoring daemon where to send mail alerts
MAILADDR root

# definitions of existing MD arrays

# This file was auto-generated on Mon, 29 Jun 2015 06:41:20 +0000
# by mkconf 3.2.5-5
root@Openmediavault:~# mdadm --detail --scan --verbose
mdadm: cannot open /dev/md/NasDiskRaid: No such file or directory
root@Openmediavault:~#

All the drives are present. And how i can force mount in degraded mode? And are there more options to try?

Nobody who can help?

I get a error...

Linux Openmediavault 3.2.0-4-amd64 #1 SMP Debian 3.2.82-1 x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat Jan 7 12:09:47 2017 from imac-van-admin.local
root@Openmediavault:~# mdadm --stop /dev/md127
mdadm: stopped /dev/md127
root@Openmediavault:~# mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]
mdadm: looking for devices for /dev/md127
mdadm: Cannot assemble mbr metadata on /dev/sda
mdadm: /dev/sda has no superblock - assembly aborted

Not a recent backup.

And how the command line?

1) dd if=/dev/zero of=/dev/sda bs=512 count=10000

2) mdadm --stop /dev/md127

3) mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]

root@Openmediavault:~# dd if=/dev/zero of=/dev/sda bs=512 count=10000
10000+0 records gelezen
10000+0 records geschreven
5120000 bytes (5,1 MB) gekopieerd, 0,666498 s, 7,7 MB/s
root@Openmediavault:~# mdadm --stop /dev/md127
mdadm: stopped /dev/md127
root@Openmediavault:~# mdadm --assemble --force --verbose /dev/md127 /dev/sd[abcdfg]
mdadm: looking for devices for /dev/md127
mdadm: no recogniseable superblock on /dev/sda
mdadm: /dev/sda has no superblock - assembly aborted

root@openmediavault:~# mdadm --assemble --force --verbose /dev/md127 /dev/sd[bcdfg]
mdadm: looking for devices for /dev/md127
mdadm: no RAID superblock on /dev/sdd
mdadm: /dev/sdd has no superblock - assembly aborted