help destroy a raid on proxmox ovh

[guilloking]

Good dear group.

I have this problem and I hope you can help me, I have a problem.

I have a proxmox server mounted in ovh with 4 2 tera disks which by default are installed in raid 1.

I want to have the 4 disks to have the maximum possible storage, destroying the raid1.

The procedure that I carried out was the following.

umount, mdadm stop, mdadm destroy, mdadm zero superblock.

In the configuration I have a vg group called vg and it contains the /dev/md5

The disk array contains the 4 disks mentioned, sda4, sdb4, sdc4, sdd4.

What is synchronizing is the partition /var/lib/vz

What would be the correct procedure, because I have already carried out the procedure twice and the proxmox does not start, it is damaged.

attached

partition.
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 511M 0 part /boot/efi
├─sda2 8:2 0 1G 0 part
│ └─md2 9:2 0 1022M 0 raid1 /boot
├─sda3 8:3 0 20G 0 part
│ └─md3 9:3 0 20G 0 raid1 /
├─sda4 8:4 0 20G 0 part [SWAP]
├─sda5 8:5 0 1.8T 0 part
│ └─md5 9:5 0 1.8T 0 raid1
│ └─vg-data 253:0 0 1.8T 0 lvm /var/lib/vz
└─sda6 8:6 0 2M 0 part
sdb 8:16 0 1.8T 0 disk
├─sdb1 8:17 0 511M 0 part
├─sdb2 8:18 0 1G 0 part
│ └─md2 9:2 0 1022M 0 raid1 /boot
├─sdb3 8:19 0 20G 0 part
│ └─md3 9:3 0 20G 0 raid1 /
├─sdb4 8:20 0 20G 0 part [SWAP]
└─sdb5 8:21 0 1.8T 0 part
└─md5 9:5 0 1.8T 0 raid1
└─vg-data 253:0 0 1.8T 0 lvm /var/lib/vz
sdc 8:32 0 1.8T 0 disk
├─sdc1 8:33 0 511M 0 part
├─sdc2 8:34 0 1G 0 part
│ └─md2 9:2 0 1022M 0 raid1 /boot
├─sdc3 8:35 0 20G 0 part
│ └─md3 9:3 0 20G 0 raid1 /
├─sdc4 8:36 0 20G 0 part [SWAP]
└─sdc5 8:37 0 1.8T 0 part
└─md5 9:5 0 1.8T 0 raid1
└─vg-data 253:0 0 1.8T 0 lvm /var/lib/vz
sdd 8:48 0 1.8T 0 disk
├─sdd1 8:49 0 511M 0 part
├─sdd2 8:50 0 1G 0 part
│ └─md2 9:2 0 1022M 0 raid1 /boot
├─sdd3 8:51 0 20G 0 part
│ └─md3 9:3 0 20G 0 raid1 /
├─sdd4 8:52 0 20G 0 part [SWAP]
└─sdd5 8:53 0 1.8T 0 part
└─md5 9:5 0 1.8T 0 raid1
└─vg-data 253:0 0 1.8T 0 lvm /var/lib/vz

mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]
md5 : active raid1 sda5[0] sdd5[3] sdb5[1] sdc5[2]
1909864448 blocks super 1.2 [4/4] [UUUU]
bitmap: 0/15 pages [0KB], 65536KB chunk

md3 : active raid1 sdc3[2] sdb3[1] sdd3[3] sda3[0]
20954112 blocks super 1.2 [4/4] [UUUU]

md2 : active raid1 sdb2[1] sdd2[3] sdc2[2] sda2[0]
1046528 blocks super 1.2 [4/4] [UUUU]

detail
/dev/md5:
Version : 1.2
Creation Time : Tue Jul 11 21:51:29 2023
Raid Level : raid1
Array Size : 1909864448 (1821.39 GiB 1955.70 GB)
Used Dev Size : 1909864448 (1821.39 GiB 1955.70 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Wed Jul 12 14:41:26 2023
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0

Consistency Policy : bitmap

Name : md5
UUID :
Events : 2

Number Major Minor RaidDevice State
0 8 5 0 active sync /dev/sda5
1 8 21 1 active sync /dev/sdb5
2 8 37 2 active sync /dev/sdc5
3 8 53 3 active sync /dev/sdd5

unused devices: <none>

I hope you can help me.

thx,

 

[robkslr]

Good day Guillo,

i know that maybe you don't need this answer anymore but i bought the OVH Bare Metal today and i had the same problem.

You can not change the hardware RAID but you can choose in the setup section how many disk proxmox should use for the installer. I have 3 disks and i chose 1 disk. After the setup and the first login i am able to have 3 disk without raid or create a software raid inside the disk partitioning.

Hope this will help somebody!

Ciao!