Re: VM(D) Interface Question
On Sat, Oct 01, 2022 at 08:32:35AM -0400, Dave Voutila wrote: > > Holger Glaess writes: > > > Hi > > > > > > how many Interfaces can an single VM have ? > > > > > > With 3 Interface in my vm.conf the vm works, with 4 not i get "to many > > interfaces". > > > > The maximum supported per vm is currently 4. Without your config or > invocation triggering the "too many interfaces" when you use 4, I cannot > explain any further. Debug output would also be helpful to make sure > it's the message coming from the config parsing as I suspect. > > -dv > 4 should work (I just did this and it worked here). There is nothing special about "4", it's just a reasonable number we picked early on. You could probably crank that higher. Note that there is a maximum number of devices per vm which I think is 10 (includes all virtio devices and don't forget we use one for the rnd device). Technically we rotate the IRQ back to the start of the list at 10 devices but the level triggered code for interrupt sharing in 8259.c probably hasn't been tested too much and I wouldn't be surprised if something is broken there. -ml
Re: VM(D) Interface Question
Holger Glaess writes: > Hi > > > how many Interfaces can an single VM have ? > > > With 3 Interface in my vm.conf the vm works, with 4 not i get "to many > interfaces". > The maximum supported per vm is currently 4. Without your config or invocation triggering the "too many interfaces" when you use 4, I cannot explain any further. Debug output would also be helpful to make sure it's the message coming from the config parsing as I suspect. -dv
Re: VM(D) Interface Question
Heho,
Ah, yeah, sorry, meant tap. Writing mails to late n stuff... :-/
With best regards,
Tobias
-Original Message-
From: Holger Glaess
Sent: Saturday, 1 October 2022 10:30
To: Tobias Fiebig ; 'OpenBSD general usage
list'
Subject: Re: VM(D) Interface Question
hi
no , ony this single vm.
did you mean really tun interfaces , i think and see tap
is in use by vmd ?
for the tap interface i add allready with MAKEDEV 4 more.
Holger
On 01.10.22 02:08, Tobias Fiebig wrote:
> Heho,
> Any other VMs on the box? My first thought would be not enough tun devs,
> default is iirc 4?
>
> To make it work, if that is the case:
>
> cd /dev ; sh ./MAKEDEV tun4 ; sh ./MAKEDEV tun5; sh ./MAKEDEV tun6
>
> With best regards,
> Tobias
>
>
> -Original Message-
> From: owner-m...@openbsd.org On Behalf Of Holger
> Glaess
> Sent: Saturday, 1 October 2022 01:14
> To: OpenBSD general usage list
> Subject: VM(D) Interface Question
>
> Hi
>
>
> how many Interfaces can an single VM have ?
>
>
> With 3 Interface in my vm.conf the vm works, with 4 not i get "to many
> interfaces".
>
> if i put in the vm section "interfaces 6" , this fails also.
>
> any veb still exists and working.
>
>
> Holger
>
>
> switch "vswitch100" {
> # lan
> interface veb100
> enable
> }
>
> switch "vswitch110" {
> # xbl
> interface veb110
> enable
> }
>
> switch "vswitch120" {
> # dmz
> interface veb120
> enable
> }
>
> switch "vswitch130" {
> # wdmz
> interface veb130
> enable
> }
>
> switch "vswitch300" {
> # freetz
> interface veb300
> enable
> }
>
> switch "vswitch5" {
> # um
> interface veb5
> disable
> }
>
> switch "vswitch7" {
> # nc
> interface veb7
> disable
> }
>
> vm "farin" {
> # interfaces 6
> owner _vmd
> disk "/home/vmd/disk0.qcow2"
> interface {
> switch "vswitch100"
> lladdr fe:e1:ba:d0:9b:d4
> }
>
> interface {
> switch "vswitch110"
> lladdr fe:e1:ba:d0:9b:d5
> }
>
> interface {
> switch "vswitch120"
> lladdr fe:e1:ba:d0:9b:d6
> }
>
> #interface {
> #switch "vswitch130"
> #lladdr fe:e1:ba:d0:9b:d7 #}
>
> #interface {
> #switch "vswitch300"
> #lladdr fe:e1:ba:d0:9b:d8 #}
>
> memory 2G
> enable
> }
>
>
>
>
Re: VM(D) Interface Question
hi
no , ony this single vm.
did you mean really tun interfaces , i think and see tap
is in use by vmd ?
for the tap interface i add allready with MAKEDEV 4 more.
Holger
On 01.10.22 02:08, Tobias Fiebig wrote:
Heho,
Any other VMs on the box? My first thought would be not enough tun devs,
default is iirc 4?
To make it work, if that is the case:
cd /dev ; sh ./MAKEDEV tun4 ; sh ./MAKEDEV tun5; sh ./MAKEDEV tun6
With best regards,
Tobias
-Original Message-
From: owner-m...@openbsd.org On Behalf Of Holger Glaess
Sent: Saturday, 1 October 2022 01:14
To: OpenBSD general usage list
Subject: VM(D) Interface Question
Hi
how many Interfaces can an single VM have ?
With 3 Interface in my vm.conf the vm works, with 4 not i get "to many
interfaces".
if i put in the vm section "interfaces 6" , this fails also.
any veb still exists and working.
Holger
switch "vswitch100" {
# lan
interface veb100
enable
}
switch "vswitch110" {
# xbl
interface veb110
enable
}
switch "vswitch120" {
# dmz
interface veb120
enable
}
switch "vswitch130" {
# wdmz
interface veb130
enable
}
switch "vswitch300" {
# freetz
interface veb300
enable
}
switch "vswitch5" {
# um
interface veb5
disable
}
switch "vswitch7" {
# nc
interface veb7
disable
}
vm "farin" {
# interfaces 6
owner _vmd
disk "/home/vmd/disk0.qcow2"
interface {
switch "vswitch100"
lladdr fe:e1:ba:d0:9b:d4
}
interface {
switch "vswitch110"
lladdr fe:e1:ba:d0:9b:d5
}
interface {
switch "vswitch120"
lladdr fe:e1:ba:d0:9b:d6
}
#interface {
#switch "vswitch130"
#lladdr fe:e1:ba:d0:9b:d7 #}
#interface {
#switch "vswitch300"
#lladdr fe:e1:ba:d0:9b:d8 #}
memory 2G
enable
}
Re: VM(D) Interface Question
Heho,
Any other VMs on the box? My first thought would be not enough tun devs,
default is iirc 4?
To make it work, if that is the case:
cd /dev ; sh ./MAKEDEV tun4 ; sh ./MAKEDEV tun5; sh ./MAKEDEV tun6
With best regards,
Tobias
-Original Message-
From: owner-m...@openbsd.org On Behalf Of Holger Glaess
Sent: Saturday, 1 October 2022 01:14
To: OpenBSD general usage list
Subject: VM(D) Interface Question
Hi
how many Interfaces can an single VM have ?
With 3 Interface in my vm.conf the vm works, with 4 not i get "to many
interfaces".
if i put in the vm section "interfaces 6" , this fails also.
any veb still exists and working.
Holger
switch "vswitch100" {
# lan
interface veb100
enable
}
switch "vswitch110" {
# xbl
interface veb110
enable
}
switch "vswitch120" {
# dmz
interface veb120
enable
}
switch "vswitch130" {
# wdmz
interface veb130
enable
}
switch "vswitch300" {
# freetz
interface veb300
enable
}
switch "vswitch5" {
# um
interface veb5
disable
}
switch "vswitch7" {
# nc
interface veb7
disable
}
vm "farin" {
# interfaces 6
owner _vmd
disk "/home/vmd/disk0.qcow2"
interface {
switch "vswitch100"
lladdr fe:e1:ba:d0:9b:d4
}
interface {
switch "vswitch110"
lladdr fe:e1:ba:d0:9b:d5
}
interface {
switch "vswitch120"
lladdr fe:e1:ba:d0:9b:d6
}
#interface {
#switch "vswitch130"
#lladdr fe:e1:ba:d0:9b:d7 #}
#interface {
#switch "vswitch300"
#lladdr fe:e1:ba:d0:9b:d8 #}
memory 2G
enable
}
VM(D) Interface Question
Hi
how many Interfaces can an single VM have ?
With 3 Interface in my vm.conf the vm works, with 4 not i get "to many
interfaces".
if i put in the vm section "interfaces 6" , this fails also.
any veb still exists and working.
Holger
switch "vswitch100" {
# lan
interface veb100
enable
}
switch "vswitch110" {
# xbl
interface veb110
enable
}
switch "vswitch120" {
# dmz
interface veb120
enable
}
switch "vswitch130" {
# wdmz
interface veb130
enable
}
switch "vswitch300" {
# freetz
interface veb300
enable
}
switch "vswitch5" {
# um
interface veb5
disable
}
switch "vswitch7" {
# nc
interface veb7
disable
}
vm "farin" {
# interfaces 6
owner _vmd
disk "/home/vmd/disk0.qcow2"
interface {
switch "vswitch100"
lladdr fe:e1:ba:d0:9b:d4
}
interface {
switch "vswitch110"
lladdr fe:e1:ba:d0:9b:d5
}
interface {
switch "vswitch120"
lladdr fe:e1:ba:d0:9b:d6
}
# interface {
# switch "vswitch130"
# lladdr fe:e1:ba:d0:9b:d7
# }
# interface {
# switch "vswitch300"
# lladdr fe:e1:ba:d0:9b:d8
# }
memory 2G
enable
}
