Ben Russo wrote:
Ben Russo wrote:
Have Dell-2950, with Quad Core Xeon (PAE & VMX, enabled)
Running RHEL-5 xen kernel, fully yum-upgraded yesterday and rebooted.
Used GUI Virt Manager to create new fully virtualized guest domain.
Installed RH7.2 from orignal Red Hat CD's.
Install went fine all the way up to the "install finished, now remove
CD , and the machine will restart"
DomU disappeared.
"xm create -c /etc/xen/rh72-test1" command
Then I open the display
I see the grub menu
I see it start to boot the kernel.
Then the virtual console shows that the DomU kernel panic'd.
I used lomount on the Xen Dom0 host, to mount this guest domains
disks, and modified the grub.conf to have "console=ttyS0 console=tty0"
on the kernel boot line.
Then I recreated the domain and used "xm console 22" to view that.
Now I can see the entire stream of events leading up to the kernel
panic in the DomU.
It looks like this
***(ALL the rest of this message is the output of the DomU kernel)***
[EMAIL PROTECTED] ~]# xm console 22
Linux version 2.4.7-10
...
MXT page nffffff len=fffffXfis oMT page nr rt=fffffff len=ffffOops! Too
many ent ries in he memory map!
I found out that this issue is solvable by entering "nomxt" on the
kernel boot line in the DomU grub.conf.
Apparently RH7.2 used MXT (memory compression technology) by default,
but the Xen HVM bios doesn't work well with that.
Now I ran into a different RH72 HVM DomU kernel hanging issue...
after the kernel seems to load OK, it gets to the part where it is
waiting for the hard disk and does this:
Linux version 2.4.7-10 ([EMAIL PROTECTED]) (gcc
version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #1 Thu Sep 6 17:27:27
EDT 2001
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000a0000 - 00000000000c0000 type 16
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000001f3f0000 (usable)
BIOS-e820: 000000001f3f0000 - 000000001f3fa000 (ACPI data)
BIOS-e820: 000000001f3fa000 - 000000001f3fd000 (ACPI NVS)
BIOS-e820: 000000001f3fd000 - 000000001f3fe000 type 19
BIOS-e820: 000000001f3fe000 - 000000001f3ff000 type 18
BIOS-e820: 000000001f3ff000 - 000000001f400000 type 17
BIOS-e820: 00000000fec00000 - 0000000100000000 type 16
Scanning bios EBDA for MXT signature
bios string $MXT found
On node 0 totalpages: 128000
zone(0): 4096 pages.
zone(1): 123904 pages.
zone(2): 0 pages.
Kernel command line: ro root=/dev/hda2 nomxt mem=500M console=ttyS0
console=tty0
Initializing CPU#0
Detected 1596.606 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 3178.49 BogoMIPS
Memory: 498680k/512000k available (1269k kernel code, 10868k reserved,
90k data, 220k init, 0k highmem)
Dentry-cache hash table entries: 65536 (order: 7, 524288 bytes)
Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 131072 (order: 8, 1048576 bytes)
CPU: L2 cache: 32768K
CPU: L3 cache: 5632K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: Intel(R) Xeon(R) CPU E5310 @ 1.60GHz stepping 07
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch ([EMAIL PROTECTED])
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xf9ec0, last bus=0
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Using IRQ router PIIX [8086/7000] at 00:01.0
PCI: PIIX3: Enabling Passive Release on 00:01.0
Limiting direct PCI/PCI transfers.
Activating ISA DMA hang workarounds.
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.14)
mxt_scan_bios: enter
Starting kswapd v1.8
VFS: Diskquotas version dquot_6.5.0 initialized
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT
SHARE_IRQ SERIAL_PCI ISAPNP enabled
ttyS00 at 0x03f8 (irq = 4) is a 16450
Real Time Clock Driver v1.10d
block: queued sectors max/low 331082kB/200010kB, 1024 slots per queue
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
PIIX3: IDE controller on PCI bus 00 dev 09
PIIX3: chipset revision 0
PIIX3: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xc000-0xc007, BIOS settings: hda:pio, hdb:pio
ide1: BM-DMA at 0xc008-0xc00f, BIOS settings: hdc:pio, hdd:pio
hd0: C/H/S=761/0/63 from BIOS ignored
hda: QEMU HARDDISK, ATA DISK drive
Then it hangs right here.
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