The vm host shows this:
# setserial -g /dev/ttyS*
/dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: 16950/954, Port: 0xd040, IRQ: 17
/dev/ttyS2, UART: 16950/954, Port: 0xd048, IRQ: 17
/dev/ttyS3, UART: 16950/954, Port: 0xd050, IRQ: 17
#
# ll /dev/ttyS*
crw-rw----. 1 root dialout 4, 64 Nov 10 12:18 /dev/ttyS0
crw-rw----. 1 root dialout 4, 65 Nov 10 12:18 /dev/ttyS1
crw-rw----. 1 root dialout 4, 66 Nov 10 12:18 /dev/ttyS2
crw-rw----. 1 root dialout 4, 67 Nov 10 12:18 /dev/ttyS3
By default serial 0 o guests is assigned to pty and has a
device path of '-'. I have installed on the host a 4-port
serial card, as evidenced above. When I add the first
additional port to the guest (serial 1) and use
'/dev/ttyS1' as the path the guest will boot. However, if
I add a second serial port (serial 2) using path
'/dev/ttyS2' then I get this error and the guest will not
start:
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/engine.py",
line 878, in run_domain
vm.startup()
File "/usr/share/virt-manager/virtManager/domain.py",
line 1313, in startup
self._backend.create()
File "/usr/lib64/python2.6/site-packages/libvirt.py",
line 333, in create
if ret == -1: raise libvirtError ('virDomainCreate()
failed', dom=self)
libvirtError: internal error Process exited while reading
console log output: char device redirected to /dev/pts/1
isa irq 4 already assigned
How does one configure additional serial ports on a kvm
guest?
--
*** E-Mail is NOT a SECURE channel ***
James B. Byrne mailto:ByrneJB@xxxxxxxxxxxxx
Harte & Lyne Limited http://www.harte-lyne.ca
9 Brockley Drive vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada L8E 3C3
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