Filesystem crash on proxmox

I use Proxmox and all my servers are virtual machines… I tought its time to try Nethserver and replace my SME9…

Today I copied my data from the SME9 to the new Installed Nethserver 7.3. I used Windows 7 explorer and made three sessions at the same time, after about 10min the filesystem crashed.

I was not able to shutdown the Nethserver, a reboot did also not work. At the moment I have only screenshots, I will send you the logfile after I can extract it from the vm…

Do you have other VMs on that proxmox? It looks like the VM has big issues with the virtual disk

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I’m using too Nethserver as Proxmox VM.

Disk configuration I use is:
Proxmox Side: scsi disk type with no cache
Netherver side: ext4 over lvm

Working flawlessly here

How did you configure the VM?

Yes I do, there are abt. 5 always on and a few test vm’s, I am sorry I can not extract the logfiles, I try to reproduce the error.

I did a recovery, at the moment nethserver is running, the only difference is that I now use another storage on Proxmox.

Is there a guidline howto create a vm under proxmox especially for nethserver ?

@Asrix did a howto


I did a unatended installation, I think nethserver use xfs in that case.


bootdisk: scsi0
cores: 2
memory: 4000
net0: virtio=xx:xx:xx:xx:xx:xx,bridge=vmbr0
numa: 0
ostype: l26
scsi0: vmstore01:vm-106-disk-1,size=2000G
scsihw: virtio-scsi-pci
smbios1: uuid=xxxxxxxxxxxxxxxxxxxxx
sockets: 1


Disk /dev/sda: 2147GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 1075MB 1074MB primary xfs boot
2 1075MB 2147GB 2146GB primary lvm

Everything seems ok.
Also dnutan howto seems to be pretty good.
I prefer to use scsi as disk type (linux seems to prefer that kind of configuration), it’s a lot better as compatibility and you lose just a 1-2% performance compared to virtio. But that’s just a matter of taste.

Also I don’t use qcow format, cause I use ZFS as storage subsystem in proxmox.

Never the less, your configuration seems ok.