View source for xenserver Serial Console Access


== Problem ==
Failing to receive serial console output from XenServer 6.2.  

The server hardware was a supermicro board.  I could see post an bios messages.  I could see syslinus messages.  The last thing I could see was...


 Loading /boot/xen.gz... okopyright (C) 1994-2012 H. Peter Anvin et al           
 Loading /boot/vmlinuz-2.6-xen... ok0                                            
 Loading /boot/initrd-2.6-xen.img... ok 

I verified my bios serial port settings...

 * Serial Port Mode               [115200 8,n,1]   
 * Flow Control                   [None]
 * Redirection After BIOS POST    [Always]
 * Terminal Type                  [VT100]
 * VT-UTF8 Combo Key Support      [Enabled]
 * Sredir Memory Display Delay    [No Delay] 

checked /boot/extlinux.conf, the settings for the xe-serial were consistent with my hardware settings

...
 label xe-serial
  # XenServer (Serial)
  kernel mboot.c32
  append /boot/xen.gz com1=115200,8n1 console=com1 ...(output truncated)
...

Edit /boot/extlinux.conf

change line 3 from
 default xe

to

 default xe-serial

Result...

  eter Anvin et al51a10931 Copyright (C) 1994-2012 H. P                           
 boot:                                                                           
 Loading /boot/xen.gz... ok on Remote Keyboard)                                  
 Loading /boot/vmlinuz-2.6-xen... okthe network                                  
 Loading /boot/initrd-2.6-xen.img... ok Keyboard)                                
  __  __            _  _    _   ____                                             
  \ \/ /___ _ __   | || |  / | | ___|                                            
   \  // _ \ '_ \  | || |_ | | |___ \                                            
   /  \  __/ | | | |__   _|| |_ ___) |isk                                        
  /_/\_\___|_| |_|    |_|(_)_(_)____/ isk                                        
                                      01B01                                      
 (XEN) Xen version 4.1.5 (root@uk.xensource.com) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) Fri Jun 14 09:04:06 EDT 2013
 (XEN) Latest ChangeSet: 23509:aa273b47bcbe, pq 572:5c414f7cb3b1                 
 (XEN) Bootloader: SYSLINUX 4.06 0x51a10931Capable and Status OK                 
 (XEN) Command line: com1=115200,8n1 console=com1,vga mem=1024G dom0_max_vcpus=4 dom0_mem=752M,max:752M watchdog_timeout=300 lowmem_emergency_pool=1M crashkernel=64M@32M cpuid_mas0
 (XEN) Video information:ces found and configured.                               
 (XEN)  VGA is text mode 80x25, font 8x16                                        
 (XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds                       
 (XEN) Disc information:                                                         
 (XEN)  Found 1 MBR signatures                                                  
 (XEN)  Found 4 EDD information structures
 (XEN) Xen-e820 RAM map:evel: 6
 (XEN)  0000000000000000 - 0000000000099800 (usable)
 (XEN)  0000000000099800 - 00000000000a0000 (reserved)
 (XEN)  00000000000e6000 - 0000000000100000 (reserved)
 (XEN)  0000000000100000 - 00000000dfea0000 (usable)
 (XEN)  00000000dfea0000 - 00000000dfeb2000 (ACPI data)
 (XEN)  00000000dfeb2000 - 00000000dfee0000 (ACPI NVS)
 (XEN)  00000000dfee0000 - 00000000f0000000 (reserved)
 (XEN)  00000000ffe00000 - 0000000100000000 (reserved)
 (XEN)  0000000100000000 - 0000000320000000 (usable)
 (XEN) Kdump: 64MB (65536kB) at 0x2000000
 (XEN) ACPI: RSDP 000FA1C0, 0024 (r2 ACPIAM)
 (XEN) ACPI: XSDT DFEA0100, 0054 (r1 SMCI            20131125 MSFT       97)
 (XEN) ACPI: FACP DFEA0290, 00F4 (r3 112513 FACP1100 20131125 MSFT       97)
 (XEN) ACPI: DSDT DFEA0600, 562B (r1  1CF11 1CF11000        0 INTL 20051117)
 (XEN) ACPI: FACS DFEB2000, 0040[  OK  ]
 (XEN) ACPI: APIC DFEA0390, 00A4 (r1 112513 APIC1100 20131125 MSFT       97)
 (XEN) ACPI: MCFG DFEA0440, 003C (r1 112513 OEMMCFG  20131125 MSFT       97)
 (XEN) ACPI: OEMB DFEB2040, 0075 (r1 112513 OEMB1100 20131125 MSFT       97)
 (XEN) ACPI: HPET DFEAA600, 0038 (r1 112513 OEMHPET  20131125 MSFT       97)
 (XEN) ACPI: SSDT DFEAA640, 1714 (r1 A M I  POWERNOW        1 AMD         1)
 (XEN) System RAM: 12286MB (12581092kB)
 (XEN) Domain heap initialised DMA width 32 bitsn: [  OK  ]
 (XEN) Processor #16 5:2 APIC version 16
 (XEN) Processor #17 5:2 APIC version 16
 (XEN) Processor #18 5:2 APIC version 16
 (XEN) Processor #19 5:2 APIC version 16
 (XEN) Processor #20 5:2 APIC version 16K  ]
 (XEN) Processor #21 5:2 APIC version 16 not running.
 (XEN) Processor #22 5:2 APIC version 16
 (XEN) Processor #23 5:2 APIC version 16
 (XEN) IOAPIC[0]: apic_id 0, version 33, address 0xfec00000, GSI 0-23
 (XEN) IOAPIC[1]: apic_id 1, version 33, address 0xfec20000, GSI 24-55
 (XEN) Enabling APIC mode:  Flat.  Using 2 I/O APICs
 (XEN) Using scheduler: SMP Credit Scheduler (credit)
 (XEN) Detected 2600.055 MHz processor.
 (XEN) Initing memory sharing.he memory ballooning daemon: [  OK  ]
 (XEN) Writing CPUID feature mask ECX:EDX -> 3698320Bh:178BFBFFh
 (XEN) Writing CPUID extended feature mask ECX:EDX -> 01EABFFFh:2FD3FBFFh
 (XEN) AMD-Vi: IOMMU not found! signal... 
 (XEN) I/O virtualisation disabledgnal... 
 (XEN) ENABLING IO-APIC IRQs
 (XEN)  -> Using new ACK methodem time 
 (XEN) Platform timer is 14.318MHz HPET
 (XEN) Allocated console ring of 64 KiB.
 (XEN) HVM: ASIDs enabled. 
 (XEN) SVM: Supported advanced features:tem...
 (XEN)  - Nested Page Tables (NPT)
 (XEN)  - Last Branch Record (LBR) Virtualisation
 (XEN)  - Next-RIP Saved on #VMEXIT
 (XEN)  - VMCB Clean Bits
 (XEN)  - DecodeAssists
 (XEN)  - Pause-Intercept Filter
 (XEN) HVM: SVM enabled
 (XEN) HVM: Hardware Assisted Paging (HAP) detected
 (XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB
 (XEN) Brought up 8 CPUs
 (XEN) Testing NMI watchdog --- CPU#0 okay. CPU#1 okay. CPU#2 okay. CPU#3 okay. CPU#4 okay. CPU#5 okay. CPU#6 okay. CPU#7 okay. 
 (XEN) *** LOADING DOMAIN 0 ***
 (XEN)  Xen  kernel: 64-bit, lsb, compat32
 (XEN)  Dom0 kernel: 32-bit, PAE, lsb, paddr 0x100000 -> 0x787000
 (XEN) PHYSICAL MEMORY ARRANGEMENT:
 (XEN)  Dom0 alloc.:   00000000de000000->00000000df000000 (186362 pages to be allocated)
 (XEN)  Init. ramdisk: 000000031f7fa000->000000031ffffc00
 (XEN) VIRTUAL MEMORY ARRANGEMENT:
 (XEN)  Loaded kernel: 00000000c0100000->00000000c0787000
 (XEN)  Init. ramdisk: 00000000c0787000->00000000c0f8cc00
 (XEN)  Phys-Mach map: 00000000c0f8d000->00000000c1049000
 (XEN)  Start info:    00000000c1049000->00000000c10494b4
 (XEN)  Page tables:   00000000c104a000->00000000c105a000
 (XEN)  Boot stack:    00000000c105a000->00000000c105b000
 (XEN)  TOTAL:         00000000c0000000->00000000c1400000
 (XEN)  ENTRY ADDRESS: 00000000c0100000
 (XEN) Dom0 has maximum 4 VCPUs
 ...
 output truncated


[[category:xenserver]]