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Unmounted drive
ClarkSandam
Member
Hello, I have a dedicated server on Hetzner, I had to install centos6 from image since they don't support this OS, but when I installed I found out that I have only one drive mounted, but in fact I have 2 drives in my server as you can see:
[root@CentOS-69-64-minimal ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb 8:16 0 447.1G 0 disk
├─sdb1 8:17 0 4G 0 part
│ └─md0 9:0 0 4G 0 raid1 [SWAP]
├─sdb2 8:18 0 512M 0 part
│ └─md1 9:1 0 512M 0 raid1 /boot
└─sdb3 8:19 0 442.6G 0 part
└─md2 9:2 0 442.6G 0 raid1 /
sda 8:0 0 447.1G 0 disk
├─sda1 8:1 0 4G 0 part
│ └─md0 9:0 0 4G 0 raid1 [SWAP]
├─sda2 8:2 0 512M 0 part
│ └─md1 9:1 0 512M 0 raid1 /boot
└─sda3 8:3 0 442.6G 0 part
└─md2 9:2 0 442.6G 0 raid1 /
[root@CentOS-69-64-minimal ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md2 435G 29G 385G 7% /
tmpfs 127G 472K 127G 1% /dev/shm
/dev/md1 496M 59M 412M 13% /boot
[root@CentOS-69-64-minimal ~]# blkid -o list
device fs_type label mount point UUID
/dev/sda1 linux_raid_member rescue:0 (in use) b7c90fe5-96cb-184d-3907-d6d1a0d67565
/dev/sda2 linux_raid_member (in use) 7910700e-96e5-b2b5-776c-2c25004bd7b2
/dev/sda3 ext4 (in use) 0fcb54b4-2a95-4c2a-a691-6049632523c9
/dev/sdb1 linux_raid_member rescue:0 (in use) b7c90fe5-96cb-184d-3907-d6d1a0d67565
/dev/sdb2 linux_raid_member (in use) 7910700e-96e5-b2b5-776c-2c25004bd7b2
/dev/sdb3 linux_raid_member rescue:2 (in use) bc9c6055-6469-0731-5a92-607c88438a4a
/dev/md0 swap <swap> 6b31b83d-daed-4d61-a2cc-991c1065131a
/dev/md1 ext3 /boot 50fbf70e-9fd7-40e9-8ddd-f082062566df
/dev/md2 ext4 / 0fcb54b4-2a95-4c2a-a691-6049632523c9
[root@CentOS-69-64-minimal ~]# lsblk --noheadings --raw | awk '$1~/s.*[[:digit:]]/ && $7==""'
sdb1 8:17 0 4G 0 part
sdb2 8:18 0 512M 0 part
sdb3 8:19 0 442.6G 0 part
sda1 8:1 0 4G 0 part
sda2 8:2 0 512M 0 part
sda3 8:3 0 442.6G 0 part
my question is how can I mount the second drive without losing my files/data on my whole server.
thank you.
Comments
What is
You can see only 1 Disk because it's in RAID just check your raid status. I think it's RAID-1
Yes - Its raid 1.
You can see by your lsblk output in your first screen.
Personally I can see two hard drives sda and sdb, in RAID-1. I can see only one issue it’s just luck of server administration
├─sdb1 8:17 0 4G 0 part
│ └─md0 9:0 0 4G 0 raid1 [SWAP]
├─sdb2 8:18 0 512M 0 part
│ └─md1 9:1 0 512M 0 raid1 /boot
└─sdb3 8:19 0 442.6G 0 part
└─md2 9:2 0 442.6G 0 raid1 /
sda 8:0 0 447.1G 0 disk
├─sda1 8:1 0 4G 0 part
│ └─md0 9:0 0 4G 0 raid1 [SWAP]
├─sda2 8:2 0 512M 0 part
│ └─md1 9:1 0 512M 0 raid1 /boot
└─sda3 8:3 0 442.6G 0 part
└─md2 9:2 0 442.6G 0 raid1 /
I see two disk. What are we missing?
I just think ClarkSandam is a bit confused. He is seeing 2 disks but not understanding that they are in Raid 1.
He's going to have to re-install in raid 0 or just install on 1 disk and then mount the 2nd disk. Not advised, but if he wants his full disk size available.....
That being said - he needs to remove the raid and partitions before he re installs
That's why asked him to give /proc/mdstat output, at first I thought he is asking that one of the disc is not mounted / attached to raid.