[Xen-devel] Unable to start guest domains

[David F Barrera <dfbp@xxxxxxxxxx>]

The current build is broken. I am unable to start a guest domain on any
of my test boxes. I've tried several hg pulls, and all fail. This is the
last one I've picked up:


changeset:   7288:03d69dbea152
tag:         tip
user:        kaf24@xxxxxxxxxxxxxxxxxxxx
date:        Mon Oct 10 10:57:41 2005 +0100
summary:     Fire watch callbacks on their own workqueue. Mainly this is


x235:~ # xm create -c /tmp/xen/vm1.cfg
Using config file "/tmp/xen/vm1.cfg".
Started domain vm1
Linux version 2.6.12-xenU (root@x235) (gcc version 3.3.3 (SuSE Linux))
#1 SMP Mon Oct 10 11:18:16 CDT 2005
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000008000000 (usable)
0MB HIGHMEM available.
128MB LOWMEM available.
IRQ lockup detection disabled
Built 1 zonelists
Kernel command line:  root=/dev/sda9 ro
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 16384 bytes)
Xen reported: 3192.996 MHz processor.
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
vmalloc area: c8800000-fb7fe000, maxmem 34000000
Memory: 126336k/131072k available (1806k kernel code, 4488k reserved,
553k data, 140k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode...
Ok.
Mount-cache hash table entries: 512
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: L3 cache: 1024K
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... disabled
CPU0: Intel(R) Xeon(TM) CPU 3.20GHz stepping 05
Total of 1 processors activated (6356.99 BogoMIPS).
Brought up 1 CPUs
NET: Registered protocol family 16
xen_mem: Initialising balloon driver.
Grant table initialized
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Xen virtual console successfully installed as tty1
Event-channel device installed.
xen_blk: Initialising virtual block device driver
xen_net: Initialising virtual ethernet driver.
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 8Kbytes
TCP established hash table entries: 8192 (order: 5, 131072 bytes)
TCP bind hash table entries: 8192 (order: 4, 98304 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
NET: Registered protocol family 1
NET: Registered protocol family 17
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "sda9" or unknown-block(2,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-
block(2,0)


It subsequently seems to go into a loop, creating the same domain over
and over, and a Zombie domain as well (?).

lamb22:~ # xm list
Name              ID  Mem(MiB)  CPU  VCPUs  State   Time(s)
Domain-0           0       245    0      1  r-----     53.9
Zombie-vm1         1         0    1      1  ----cd      0.3
vm1               45       220    1      1  r-----      0.2
lamb22:~ # xm list
Name              ID  Mem(MiB)  CPU  VCPUs  State   Time(s)
Domain-0           0       245    0      1  r-----     55.6
Zombie-vm1         1         0    1      1  ----cd      0.3
vm1               49       220    1      1  r-----      0.1
lamb22:~ # xm list
Name              ID  Mem(MiB)  CPU  VCPUs  State   Time(s)
Domain-0           0       245    0      1  r-----     56.6
Zombie-vm1         1         0    1      1  ----cd      0.3
vm1               51       220    1      1  -b----      0.3

lamb22:~ # xm list
Name              ID  Mem(MiB)  CPU  VCPUs  State   Time(s)
Domain-0           0       245    0      1  r-----     96.7
Zombie-vm1         1         0    1      1  ----cd      0.3
vm1              147       220    1      1  r-----      0.2







-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides


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