I'm writing in the hopes that someone might have some insight into some
networking problems I've been encountering.
I'm working with 2 dual Opteron 242 boxes from penguin which are
supposed to be equivalent except for the memory configured the one
falling off the net (shemp) has 2GB and the one working fine (curly) has
8GB.
Because of issues I've seen with bridging on machines with multiple
interfaces I have a separate brsetup script and set network-script to
/bin/true in /etc/xen/xend-config.sxp. /etc/brsetup is nearly identical
for curly and shemp -
curly:
#!/bin/csh -f
/usr/sbin/brctl addbr xen-br0
/sbin/ifconfig xen-br0 172.16.9.211 netmask 255.255.255.0 up
/usr/sbin/brctl addif xen-br0 eth0
/sbin/ip r d 172.16.9.0/24 dev eth0
/sbin/ip r a 172.16.9.0/24 dev xen-br0
/sbin/ip r d default via 172.16.9.1 dev eth0
/sbin/ip r a default via 172.16.9.1 dev xen-br0
shemp:
#!/bin/csh -f
/usr/sbin/brctl addbr xen-br0
/sbin/ifconfig xen-br0 172.16.9.212 netmask 255.255.255.0 up
/usr/sbin/brctl addif xen-br0 eth0
/sbin/ip r d 172.16.9.0/24 dev eth0
/sbin/ip r a 172.16.9.0/24 dev xen-br0
/sbin/ip r d default via 172.16.9.1 dev eth0
/sbin/ip r a default via 172.16.9.1 dev xen-br0
About 2 minutes after running /etc/brsetup on shemp, shemp will stop
responding to pings.
They're both running the same kernel from changeset 1.1354:
kmacy@shemp cat /proc/version
Linux version 2.6.8.1-xen0 (kmacy@xxxxxxxxxxxxxxxxxxxx) (gcc version 3.2
20020903 (Red Hat Linux 8.0 3.2-7)) #3 Sun Oct 3 16:38:26 PDT 2004
kmacy@curly cat /proc/version
Linux version 2.6.8.1-xen0 (kmacy@xxxxxxxxxxxxxxxxxxxx) (gcc version 3.2
20020903 (Red Hat Linux 8.0 3.2-7)) #3 Sun Oct 3 16:38:26 PDT 2004
The difference between the dmesg is small:
kmacy@curly diff ~/dmesg.curly ~/dmesg.shemp
14c14
< Xen reported: 1603.677 MHz processor.
---
> Xen reported: 1603.650 MHz processor.
52c52
< eth0: Tigon3 [partno(BCM95702A20) rev 1002 PHY(5703)]
(PCI:66MHz:32-bit) 10/100/1000BaseT Ethernet 00:50:45:01:03:3a
---
> eth0: Tigon3 [partno(BCM95702A20) rev 1002 PHY(5703)]
(PCI:66MHz:32-bit) 10/100/1000BaseT Ethernet 00:50:45:01:03:64
55c55
< eth1: Tigon3 [partno(BCM95702A20) rev 1002 PHY(5703)]
(PCI:66MHz:32-bit) 10/100/1000BaseT Ethernet 00:50:45:01:03:3b
---
> eth1: Tigon3 [partno(BCM95702A20) rev 1002 PHY(5703)]
(PCI:66MHz:32-bit) 10/100/1000BaseT Ethernet 00:50:45:01:03:65
82,83c82,83
< pIII_sse : 2502.000 MB/sec
< raid5: using function: pIII_sse (2502.000 MB/sec)
---
> pIII_sse : 2539.200 MB/sec
> raid5: using function: pIII_sse (2539.200 MB/sec)
Shemp initial console:
raid5: automatically using best checksumming function: pIII_sse
pIII_sse : 2480.000 MB/sec
raid5: using function: pIII_sse (2480.000 MB/sec)
Booting 'Xen 1.1354 / XenoLinux 2.6.8.1'
kernel /xen-1.1354.gz dom0_mem=262144 com1=9600,8n1 pdb=com1H
console=com1
[Multiboot-elf, <0x100000:0x4dd50:0x346d0>, shtab=0x183078,
entry=0x100000]
module /vmlinuz-1.1354 root=/dev/hda3 ro
[Multiboot-module @ 0x184000, 0x3fb134 bytes]
__ __ ____ ___ _ _
\ \/ /___ _ __ |___ \ / _ \ | |__ ___| |_ __ _
\ // _ \ '_ \ __) || | | |__| '_ \ / _ \ __/ _` |
/ \ __/ | | | / __/ | |_| |__| |_) | __/ || (_| |
/_/\_\___|_| |_| |_____(_)___/ |_.__/ \___|\__\__,_|
http://www.cl.cam.ac.uk/netos/xen
University of Cambridge Computer Laboratory
Xen version 2.0-beta (kmacy@xxxxxxxxxxxxxx) (gcc version 3.2 20020903
(Red Hat Linux
8.0 3.2-7)) Fri Oct 1 16:32:56 PDT 2004
(XEN) Initialised 2047MB memory (524144 pages) on a 2047MB machine
(XEN) Xen heap size is 10664KB
(XEN) CPU0: Before vendor init, caps: 078bfbff e1d3fbff 00000000, vendor
= 2
(XEN) CPU caps: 078bfbff e1d3fbff 00000000 00000000
(XEN) found SMP MP-table at 000f69a0
(XEN) Memory Reservation 0xf69a0, 4096 bytes
(XEN) Memory Reservation 0x9bd70, 4096 bytes
(XEN) ACPI: RSDP (v002 PTLTD ) @
0x000f6920
(XEN) ACPI: XSDT (v001 PTLTD XSDT 0x06040000 LTP 0x00000000) @
0x7ff734d8
(XEN) ACPI: FADT (v003 AMD HAMMER 0x06040000 PTEC 0x000f4240) @
0x7ff75e46
(XEN) ACPI: MADT (v001 PTLTD APIC 0x06040000 LTP 0x00000000) @
0x7ff75f3a
(XEN) ACPI: SPCR (v001 PTLTD $UCRTBL$ 0x06040000 PTL 0x00000001) @
0x7ff75fb0
(XEN) ACPI: DSDT (v001 AMD-K8 AMDACPI 0x06040000 MSFT 0x0100000e) @
0x00000000
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) Processor #0 Unknown CPU [15:5] APIC version 16
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
(XEN) Processor #1 Unknown CPU [15:5] APIC version 16
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
(XEN) Using ACPI for processor (LAPIC) configuration information
(XEN) Intel MultiProcessor Specification v1.4
(XEN) Virtual Wire compatibility mode.
(XEN) OEM ID: AMD Product ID: HAMMER APIC at: 0xFEE00000
(XEN) I/O APIC #2 Version 17 at 0xFEC00000.
(XEN) I/O APIC #3 Version 17 at 0xFC000000.
(XEN) I/O APIC #4 Version 17 at 0xFC001000.
(XEN) Enabling APIC mode: Flat. Using 3 I/O APICs
(XEN) Processors: 2
curly:
kernel /xen-1.1354.gz dom0_mem=262144 com1=9600,8n1 pdb=com1H
console=com1
[Multiboot-elf, <0x100000:0x4dd50:0x346d0>, shtab=0x183078,
entry=0x100000]
module /vmlinuz-1.1354 root=/dev/hda3 ro
[Multiboot-module @ 0x184000, 0x3fb134 bytes]
__ __ ____ ___ _ _
\ \/ /___ _ __ |___ \ / _ \ | |__ ___| |_ __ _
\ // _ \ '_ \ __) || | | |__| '_ \ / _ \ __/ _` |
/ \ __/ | | | / __/ | |_| |__| |_) | __/ || (_| |
/_/\_\___|_| |_| |_____(_)___/ |_.__/ \___|\__\__,_|
http://www.cl.cam.ac.uk/netos/xen
University of Cambridge Computer Laboratory
Xen version 2.0-beta (kmacy@xxxxxxxxxxxxxx) (gcc version 3.2 20020903
(Red Hat Linux 8.0 3.2-7)) Fri Oct 1 16:32:56 PD
T 2004
(XEN) Initialised 4031MB memory (1032048 pages) on a 4031MB machine
(XEN) Xen heap size is 10600KB
(XEN) CPU0: Before vendor init, caps: 078bfbff e1d3fbff 00000000, vendor
= 2
(XEN) CPU caps: 078bfbff e1d3fbff 00000000 00000000
(XEN) found SMP MP-table at 000f69a0
(XEN) Memory Reservation 0xf69a0, 4096 bytes
(XEN) Memory Reservation 0x9bd70, 4096 bytes
(XEN) ACPI: RSDP (v002 PTLTD ) @
0x000f6920
(XEN) ACPI: XSDT (v001 PTLTD XSDT 0x06040000 LTP 0x00000000) @
0xfbf734d8
(XEN) ACPI: FADT (v003 AMD HAMMER 0x06040000 PTEC 0x000f4240) @
0xfbf75e46
(XEN) ACPI: MADT (v001 PTLTD APIC 0x06040000 LTP 0x00000000) @
0xfbf75f3a
(XEN) ACPI: SPCR (v001 PTLTD $UCRTBL$ 0x06040000 PTL 0x00000001) @
0xfbf75fb0
(XEN) ACPI: DSDT (v001 AMD-K8 AMDACPI 0x06040000 MSFT 0x0100000e) @
0x00000000
(XEN) ACPI: Local APIC address 0xfee00000
(XEN) ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
(XEN) Processor #0 Unknown CPU [15:5] APIC version 16
(XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
(XEN) Processor #1 Unknown CPU [15:5] APIC version 16
(XEN) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
(XEN) ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
(XEN) Using ACPI for processor (LAPIC) configuration information
(XEN) Intel MultiProcessor Specification v1.4
(XEN) Virtual Wire compatibility mode.
(XEN) OEM ID: AMD Product ID: HAMMER APIC at: 0xFEE00000
(XEN) I/O APIC #2 Version 17 at 0xFEC00000.
(XEN) I/O APIC #3 Version 17 at 0xFC000000.
(XEN) I/O APIC #4 Version 17 at 0xFC001000.
(XEN) Enabling APIC mode: Flat. Using 3 I/O APICs
(XEN) Processors: 2
Thanks for any help.
-Kip
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