Disk space used

[proxwolfe]

Hi,

I have a plain vanilla pve installation (6.4.13) on one of my servers.

In addition to the system disk I have added in another ssd (/dev/sdd) for vms and cts. It is holds 238gb and is mounted as /mnt/vmstore. No vms/cts are installed yet.

When I run df /dev/sdd the output is (as expected)

Filesystem 1K-blocks Used Available Use% Mounted on udev 12009984 0 12009984 0% /dev

but when I run df /mnt/vmstore (which is supposed to be the same disk) the output is

Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/pve-root 28510260 2756108 24282872 11% /

The PVE webgui tells me (under Storage) that 9.7% of the disk is used and when I want to restore a vm from another pve installation, the system tells me that I there are 24gb of 29gb free.

What the hell is going on?

Thanks!

 

[Dunuin]

Dont use "df" so see available space if you are using LVM or ZFS. If it is a LVM use the lvm commands like lvdisplay, vgdisplay and so on. If it is a ZFS storage use the zfs commands like zfs list.

How did you partition a format the SSD?

 

[proxwolfe]

The ssd is not partitioned. Just directly formatted to ext4. (df should be okay then, right?)

 

[Dunuin]

For plain ext4 that should be fine.

"/dev/mapper/pve-root" should by the way be your proxmox root partition not your "/mnt/vmstore". Are you sure your "/dev/sdd" is successfully mounted? If it is not successfully mounted "/mnt/vmstore" is just a empty mountpoint and therefore it is just a folder and part of your root partition. So in that case it would make totally sense if "df /mnt/vmstore" would give you the information on your root partition and not but not on your new SSD.

By the way...ext4 isn't ideal as a VM storage. With LVM or ZFS your virtual disks could be stored on block level. With ext4 you can only store them on file level.

 

[proxwolfe]

"/dev/mapper/pve-root" should by the way be your proxmox root partition not your "/mnt/vmstore". Are you sure your "/dev/sdd" is successfully mounted? If it is not successfully mounted "/mnt/vmstore" is just a empty mountpoint and therefore it is just a folder and part of your root partition. So in that case it would make totally sense if "df /mnt/vmstore" would give you the information on your root partition and not but not on your new SSD.

You are right: The ssd was not mounted correctly.

The problem was that I had tried to mount it via /etc/fstab using its UUID.

Only I had used "uuid" instead of "UUID"

Thanks for your help!