io error on vm with raw disk

[dunkf]

hi, total noob but through tutorials i have been running proxmox on my personal server with hetzner for years up until this problem (ive caused it).

my main vm has stopped responding showing io error i have restarted the server but nothing, same error. i have tried attaching the raw image to another vm but it causes that vm to error. ive had a read around and it looks like the problem could be how I originally set up the server years ago. im using debian with 4x4tb drives in soft raid 1.
i have no back up and im worried

root@Proxmox-VE / # df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            7.8G     0  7.8G   0% /dev
tmpfs           1.6G  964K  1.6G   1% /run
/dev/md2        2.0T  143G  1.7T   8% /
tmpfs           7.8G   43M  7.8G   1% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/md1        487M  207M  256M  45% /boot
/dev/md3         13T   13T     0 100% /home
/dev/fuse        30M   16K   30M   1% /etc/pve
tmpfs           1.6G     0  1.6G   0% /run/user/0

out of space in home where all my raw disk images are stored

root@Proxmox-VE /home # ls
images  lost+found  template

any help would be much appreciated.

 

[dunkf]

the config of the vm

boot: cdn
bootdisk: scsi0
cores: 6
cpu: host,flags=+pcid;+spec-ctrl
cpuunits: 262144
ide2: none,media=cdrom
memory: 12048
name: goflix
net0: virtio=00:50:56:00:B3:EE,bridge=vmbr0
numa: 0
onboot: 1
ostype: l26
scsi0: Storage:100/vm-100-disk-0.raw,size=14000G
scsihw: virtio-scsi-single
smbios1: uuid=4738d784-c487-41ba-b599-deae2d12c22e
sockets: 1
vga: virtio
vmgenid: a11532b1-3330-4b53-a2de-4f4bc9ceab93

 

[dunkf]

ive managed to get it up and running by deleting a vm.
i right in thinking that even though the partition has shows full for months the error today was caused by me filling vm to max capacity?