RAID status: clean, degraded

Hi all,
after months of trouble free operation suddenly I got

clean, degraded status.

It seems both hdds are there and recognized correctly. Please find below the requested source code:
---

root@omv:~# cat /proc/mdstat
Personalities : [raid1]
md126 : active (auto-read-only) raid1 sdc[1]
976631360 blocks super 1.2 [2/1] [_U]

md127 : active raid1 sdd[0]
976631360 blocks super 1.2 [2/1] [U_]

unused devices: <none>

root@omv:~# blkid
/dev/sda1: UUID="39b877c3-888e-4c32-9e9d-62045734083d" TYPE="ext4" LABEL="omvboot_1"
/dev/sda5: UUID="3b5edd99-91bd-416f-be19-e75bb992f89b" TYPE="swap"
/dev/sda3: LABEL="omv" UUID="50af0a3f-fa47-417f-9758-48f5ccffd918" TYPE="ext4"
/dev/sdb1: LABEL="video" UUID="38769462-f359-4d02-aafd-312c7252328a" TYPE="xfs"
/dev/sdc: UUID="9b4b248a-3542-4213-17d5-69002a3d7f1b" UUID_SUB="6c448f1b-b6e3-ed34-3d97-c9867d535e7e" LABEL="rgbw5-omv:raid1" TYPE="linux_raid_member"
/dev/sdd: UUID="9b4b248a-3542-4213-17d5-69002a3d7f1b" UUID_SUB="63fa7f44-f774-e4a2-5c0e-cc1cf0effde3" LABEL="rgbw5-omv:raid1" TYPE="linux_raid_member"
/dev/sde1: LABEL="sata1" UUID="b2b1de40-e2fe-4c27-930d-ca15d4c03c6c" TYPE="ext4"
/dev/sdf1: LABEL="sata2" UUID="b0c2ce7a-1ade-47a7-95ab-bd58e3bb6a41" TYPE="ext4"
/dev/md127: LABEL="raid1" UUID="24bc9ef6-941f-4010-b5eb-29cb4a4d42a6" TYPE="ext4"
/dev/md126: LABEL="raid1" UUID="24bc9ef6-941f-4010-b5eb-29cb4a4d42a6" TYPE="ext4"

Disk /dev/md127: 1000.1 GB, 1000070512640 bytes
2 heads, 4 sectors/track, 244157840 cylinders, total 1953262720 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/md127 doesn't contain a valid partition table

Disk /dev/md126: 1000.1 GB, 1000070512640 bytes
2 heads, 4 sectors/track, 244157840 cylinders, total 1953262720 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/md126 doesn't contain a valid partition table

Can you help, please, hl

Hi,
I can see that about 80 people read my post, but no reply....
Strsnge!
Can anybody tell what I need to do for a RAID1 rebuild?
Or format and new?
Regards, hl

Hi,
great!!
But it does not work!!! Per Putty....
After the first line I get : Cannot get exclusve access to /dev/md126: Perhaps...
After the second line I get: Coulldn't open dev/sdc for write - not zeroing

On the WebGUI I have only the REBUILD button, when I click it, in next screen there is NO selection possible, everything is greyed out
Thank you, hl

Hi,
yes, because I was in panic...
but now it worked. stopped, now it is recovering...
And right now it changed the display. NO MORE PERCENTAG VALUES... Is thee a chance to see the progress?
Regaards, hl