Serial ports on a VM

[decibel83]

Hi.
Can I access to a physical serial port from a KVM virtual machine, without using a serial network device?

 

[tesquenure]

Hi,
Try this :

qm set 107 -serial /dev/ttyS0

Where 107 is your VMID
and ttyS0 port COM1

Then Stop/Start your VM (dont reboot)

 

[decibel83]

Thank you very much!
I will try and let you know.

 

[mangoo]

You can also look here (although that's probably the reverse from what you're trying to achieve):

http://pve.proxmox.com/wiki/FAQ

(How can I access Linux guests through a serial console?).

 

[decibel83]

This is for OpenVZ only, and I don't have to connect to a virtual machine through a serial console, but I need a physical serial port on the virtual machine.

 

[apmuthu]

Is the qm command only for QEMU KVMs or can it be used for penVZ containers as well?

Can the same physical serial port be simultaneously connected to more than one Virtual Machine?

 

[tom]

Is the qm command only for QEMU KVMs or can it be used for penVZ containers as well?

Can the same physical serial port be simultaneously connected to more than one Virtual Machine?

qm is for KVM (man qm)
vzctl is for OpenVZ (man vzctl)

 

[apmuthu]

Then how does one use the HN's physical Serial port from within an OpenVZ container?

 

[dietmar]

Then how does one use the HN's physical Serial port from within an OpenVZ container?

see 'man vzctl', section 'Device access management', for example

# vzctl set <VMID> --devnodes /dev/ttyS0:rw