Good day everyone ,

I recently rented a server with Debian 9.4 Stretch minimal installed and i'm having some issues using the full disk space which is 8tb (or 2x 4tb). Some applications like x2go only detect 2tb available for the root user or other users. I would like to have access to the full storage for all 3 users.

Here is the disk structure with different commands :

root@Debian-94-stretch-64-minimal ~ # df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 73M 3.1G 3% /run
/dev/md2 2.0T 3.1G 1.9T 1% /
tmpfs 16G 20K 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 16G 0 16G 0% /sys/fs/cgroup
/dev/md1 488M 39M 424M 9% /boot
/dev/md3 1.7T 48G 1.5T 4% /home
tmpfs 3.2G 4.0K 3.2G 1% /run/user/0
tmpfs 3.2G 4.0K 3.2G 1% /run/user/1000
tmpfs 3.2G 4.0K 3.2G 1% /run/user/1001


root@Debian-94-stretch-64-minimal ~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 3.7T 0 disk
??sda1 8:1 0 16G 0 part
? ??md0 9:0 0 16G 0 raid1 [SWAP]
??sda2 8:2 0 512M 0 part
? ??md1 9:1 0 511.4M 0 raid1 /boot
??sda3 8:3 0 2T 0 part
? ??md2 9:2 0 2T 0 raid1 /
??sda4 8:4 0 1.7T 0 part
? ??md3 9:3 0 1.7T 0 raid1 /home
??sda5 8:5 0 1M 0 part
sdb 8:16 0 3.7T 0 disk
??sdb1 8:17 0 16G 0 part
? ??md0 9:0 0 16G 0 raid1 [SWAP]
??sdb2 8:18 0 512M 0 part
? ??md1 9:1 0 511.4M 0 raid1 /boot
??sdb3 8:19 0 2T 0 part
? ??md2 9:2 0 2T 0 raid1 /
??sdb4 8:20 0 1.7T 0 part
? ??md3 9:3 0 1.7T 0 raid1 /home
??sdb5 8:21 0 1M 0 part


Can someone please tell me if there is a solution for this ?

Thanks

I think you got (software)RAID1, so the total capacity is 4Tb, furthermore its split in two big parts:
2Tb for /
1.7Tb for /home

1 members found this post helpful.

Hello grange ,

Thank you for pointing that out. I didn't know what raid 1 was.
Is there a way to change the setup to 8tb ?
Maybe i should contact the company ( Hetzner) to change the raid setup or order a different server with raid 0 to
have the 8tb i wanted ?

well, other than backing up *everything* and repartitioning, I don't know.

i think you could use tar+some archiver to backup everything except some special dirs, keeping the file attributes, then repartition the disks, choose filesystem. and restore backup and install grub (don't forget to edit /etc/fstab).

better option, use something like clonezilla, its more user-friendly, but I'm not sure if it can handle software raid properly.

anyway, you should do it from livecd or singleuser mode.



wait for someone more experienced to reply..

1 members found this post helpful.

That looks to be alot of work for a newbie.
I already contacted Hetzner to ask what would be the best solution.
I guess the easiest thing would be to start from scratch with a provided raid 0 setup by Hetzner , since there was not alot installed anyway.

Thank you for the quick reply.

thank you

Why do you need raid? I don't think raid 0 will make much difference on virtual disks. And if you wreck it you've got hamburger.

1 members found this post helpful.

Hello machine ,

I do like hamburgers but apart from that you are probably right.
As long as i can use 8tb , everything is ok.


Hetzner just replied to my ticket. Seems they have a server rescue option with installimage.
I will be able to choose raid and partitions that way.


Thanks to everyone for making me a bit wiser.

If you formatted the drives as DOS / MBR, then you can only access 2TB of the disk. You need to use GPT partitioning for drives > 2TB. Plus enclosures and other things that support > 2TB as well.

1 members found this post helpful.

Hi Shadow7 ,

Thanks for your input , i'm reading the installimage guide first before doing anything else.

This was included :

GRUB2 is the preferred boot loader and is used when it is supported by the operating system tools (like YAST), otherwise GRUB (GRUB legacy) is used. The usage of LILO is no longer supported.

So that should be allright.