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Re: [Xen-users] Problem restarting Guests

  • To: Michael McCabe <mccabemt@xxxxxxxxx>
  • From: benjamin <benjaminrtz@xxxxxxxxx>
  • Date: Wed, 24 Aug 2005 17:31:54 +0530
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 24 Aug 2005 12:00:02 +0000
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

On 8/24/05, Michael McCabe <mccabemt@xxxxxxxxx> wrote:
I'm running yesterday's unstable installation tarball on top of FC4 and
I'm running into a problem when I reboot a guest.  When the guest tries
to come back up it's unable to find sda1. Here's the configuration file

root="/dev/sda1 ro"

And here's the output from the console.

Linux version 2.6.12-xenU (xenod@xxxxxxxxxxxxxxxxxxxxx) (gcc version
3.3.3 20040412 (Red Hat Linux 3.3.3-7)) #1 SMP Tue Aug 23 04:49:46 BST
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000008000000 (usable)
0MB HIGHMEM available.
128MB LOWMEM available.
DMI not present.
IRQ lockup detection disabled
Allocating PCI resources starting at 08000000 (gap: 08000000:f8000000)
Built 1 zonelists
Kernel command line:  root=/dev/sda1 ro 3
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 16384 bytes)
Xen reported: 1793.202 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 (1744k kernel code, 4484k reserved,
555k data, 140k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode...
Mount-cache hash table entries: 512
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 64K (64 bytes/line)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... disabled
CPU0: AMD Duron(tm) processor stepping 01
Total of 1 processors activated ( 3578.26 BogoMIPS).
Brought up 1 CPUs
NET: Registered protocol family 16
store_evtchn = 2
XENBUS xs_read_watch: 0
XENBUS xs_read_watch: 0
XENBUS xs_read_watch: 0
xen_mem: Initialising balloon driver.
XENBUS xs_read_watch: 0
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_blk: Timeout connecting to device!
Netdev frontend (TX) is using grant tables.
Netdev frontend (RX) is using grant tables.
xen_net: Initialising virtual ethernet driver.
\uffff\uffff\uffff\uffff\uffff\uffffNET: 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 "sda1" or unknown-block(2,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on


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Try giving full path to the  disk file.

benjamin rualthanzauva
Xen-users mailing list



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