Hello,
I am trying to setup a Xen serial console for
easily debugging the full kernel boot messages even if it crashes with
the help from the following wiki pages:
http://wiki.xensource.com/xenwiki/XenSerialConsole http://wiki.xensource.com/xenwiki/XenParavirtOps I
noticed the wiki was written for use with grub legacy. Therefore I am
not certain if the serial console issue is with the way the grub2
package implemented serial consoles.
My problem is the machine locks up on boot after printing the messages:
(XEN) Xen trace buffers: disabled
(XEN) Std. Loglevel: All
(XEN) Guest Loglevel: All
(XEN) **********************************************
(XEN) ******* WARNING: CONSOLE OUTPUT IS SYNCHRONOUS
(XEN) ******* This option is intended to aid debugging of Xen by ensuring
(XEN) ******* that all output is synchronously delivered on the serial line.
(XEN) ******* However it can introduce SIGNIFICANT latencies and affect
(XEN) ******* timekeeping. It is NOT recommended for production use!
(XEN) **********************************************
(XEN) 3... 2... 1...
After that I just get a blank screen with a blinking "_" prompt at the
top left hand corner of the screen. I understand that this message
should not alone cause the kernel to stop booting at the output was
actually found on another thread at:
http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00340.html Does
any have a non-standard PCI serial port Xen serial console working with
grub2? What does your /etc/default/grub file and menuentrys look like?
What does your /etc/inittab look like?
My motherboard does
not have a serial port or even serial headers connectors on the board.
Therefor I purchased an add-in serial card to obtain serial ports on
the machine.
Motherboard:
http://www.intel.com/products/desktop/motherboards/DP55WG/DP55WG-overview.htm http://ark.intel.com/Product.aspx?id=40078 Add-in serial card:
"Cables Unlimited IOC-2200 2-Port DB9 Serial PCI I/O Card"
(http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=1431863&CatId=1422) My GRUB2 configuration files are also attached from:
/etc/default/grub
/boot/grub/grub.cfg (trying to boot "Setting up Xen 4.0.0 / PVOPS 2.6.32-4-xen-amd64 with a serial console" entry)
Lastly a snippet from lspci -vvv
05:01.0 Serial controller: NetMos Technology Device 9865 (prog-if 02 [16550])
Subsystem: Device a000:1000
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 22
Region 0: I/O ports at 1008 [size=8]
Region 1: Memory at f0007000 (32-bit, non-prefetchable) [size=4K]
Region 4: Memory at f0006000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [48] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
05:01.1 Serial controller: NetMos Technology Device 9865 (prog-if 02 [16550])
Subsystem: Device a000:1000
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin B routed to IRQ 21
Region 0: I/O ports at 1000 [size=8]
Region 1: Memory at f0005000 (32-bit, non-prefetchable) [size=4K]
Region 4: Memory at f0004000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [48] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
Thanks for looking!
-M
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