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sudo fdisk -l /dev/nvme0n1
Password:
Disk /dev/nvme0n1: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: CT1000P3SSD8
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x7aea1e05
Device Boot Start End Sectors Size Id Type
/dev/nvme0n1p1 256 4980735 4980480 2.4G fd Linux raid autodetect
/dev/nvme0n1p2 4980736 9175039 4194304 2G fd Linux raid autodetect
/dev/nvme0n1p3 9437184 1953520064 1944082881 927G fd Linux raid autodetect
cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sata1p3[0] sata2p3[1]
3896294208 blocks super 1.2 [2/2] [UU]
md1 : active raid1 sata1p2[0] sata2p2[1]
2097088 blocks [2/2] [UU]
md0 : active raid1 sata1p1[0] sata2p1[1]
2490176 blocks [2/2] [UU]
unused devices: <none>
mdadm --create /dev/md4 --level=1 --raid-devices=1 --force /dev/nvme0n1p3
sudo -i /volume1/scripts/syno_hdd_db.sh
Password:
Synology_HDD_db v3.6.111
DS720+ x86_64 DSM 7.2.2-72806-3
StorageManager 1.0.0-00502
ds720+_host_v7 version 8058
Running from: /volume1/scripts/syno_hdd_db.sh
HDD/SSD models found: 1
ST4000VN008-2DR166,SC60,4000 GB
M.2 drive models found: 1
CT1000P3SSD8,P9CR30A,1000 GB
No M.2 PCIe cards found
No Expansion Units found
ST4000VN008-2DR166 already exists in ds720+_host_v7.db
CT1000P3SSD8 already exists in ds720+_host_v7.db
Support disk compatibility already enabled.
Support memory compatibility already enabled.
NVMe support already enabled.
M.2 volume support already enabled.
Drive db auto updates already enabled.
DSM successfully checked disk compatibility.
You may need to reboot the Synology to see the changes.
sudo mdadm --create /dev/md3 --level=1 --raid-devices=1 --force /dev/nvme0n1p3
Password:
mdadm: /dev/nvme0n1p3 appears to be part of a raid array:
level=raid1 devices=1 ctime=Mon Mar 31 09:07:58 2025
mdadm: Note: this array has metadata at the start and
may not be suitable as a boot device. If you plan to
store '/boot' on this device please ensure that
your boot-loader understands md/v1.x metadata, or use
--metadata=0.90
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md3 started.
cat /proc/mdstat
Personalities : [raid1]
md3 : active raid1 nvme0n1p3[0]
972040384 blocks super 1.2 [1/1] [U]
md2 : active raid1 sata1p3[0] sata2p3[1]
3896294208 blocks super 1.2 [2/2] [UU]
md1 : active raid1 sata1p2[0] sata2p2[1]
2097088 blocks [2/2] [UU]
md0 : active raid1 sata1p1[0] sata2p1[1]
2490176 blocks [2/2] [UU]
unused devices: <none>
???Edit: Und poste mal die Ausgabe von: sudo mdadm --examine /dev/nvme0n1p3
sudo mdadm --examine /dev/nvme0n1p3
Password:
/dev/nvme0n1p3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 55ffbdbc:bb1d3410:ff03f270:6f5121c5
Name : DS720:3 (local to host DS720)
Creation Time : Mon Mar 31 09:17:38 2025
Raid Level : raid1
Raid Devices : 1
Avail Dev Size : 1944080833 (927.01 GiB 995.37 GB)
Array Size : 972040384 (927.01 GiB 995.37 GB)
Used Dev Size : 1944080768 (927.01 GiB 995.37 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
Unused Space : before=1968 sectors, after=65 sectors
State : clean
Device UUID : 505b9d2b:db47f070:84d93e0f:df225161
Update Time : Mon Mar 31 09:17:38 2025
Checksum : a30d1d34 - correct
Events : 1
Device Role : Active device 0
Array State : A ('A' == active, '.' == missing, 'R' == replacing)
root@DS720:~# umount /dev/md3
umount: /dev/md3: not mounted.
root@DS720:~# mdadm --stop /dev/md3
mdadm: stopped /dev/md3
root@DS720:~# mdadm --create /dev/md3 --level=1 --raid-devices=2 --force missing /dev/nvme0n1p3
mdadm: /dev/nvme0n1p3 appears to be part of a raid array:
level=raid1 devices=1 ctime=Mon Mar 31 09:17:38 2025
mdadm: Note: this array has metadata at the start and
may not be suitable as a boot device. If you plan to
store '/boot' on this device please ensure that
your boot-loader understands md/v1.x metadata, or use
--metadata=0.90
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md3 started.
root@DS720:~# mkdir -p /mnt/md3test
root@DS720:~# mount /dev/md3 /mnt/md3test
root@DS720:~# ls /mnt/md3test
root@DS720:~# reboot
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