Re: [Xen-devel] x86_64 - Unable to boot DomU

[David F Barrera <dfbp@xxxxxxxxxx>]

I tested again this morning (8/23) using the following changeset, with the same 
results:

changeset:   6328:b0d820178b8109f2d081e50920aac2c6b8273af6
tag:         tip
user:        kaf24@xxxxxxxxxxxxxxxxxxxx <mailto:kaf24@xxxxxxxxxxxxxxxxxxxx>
date:        Tue Aug 23 04:49:12 2005
summary:     This patch extends I/O APIC guest writes so that the correct
destination

Bugzilla # 176. (http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=176)

This is what is displayed on the serial console from the time that Dom0 comes up
until I tried to create DomU.

EXT3-fs: mounted filesystem with ordered data mode.
store_evtchn = 14
XENBUS xs_read_watch: 0
(XEN) (file=traps.c, line=878) Non-priv domain attempted
RDMSR(00000000c0000080,00020000,00020000).
(XEN) (file=traps.c, line=870) Non-priv domain attempted
WRMSR(00000000c0000100,00000000,00000000).
(XEN) (file=traps.c, line=870) Non-priv domain attempted
WRMSR(00000000c0000102,00000000,00000000).
(XEN) (file=traps.c, line=878) Non-priv domain attempted
RDMSR(00000000c0000080,00000000,00000000).
stop_this_cpu disable_local_APIC
(XEN) (file=grant_table.c, line=526) Bad handle (0).
(XEN) (file=grant_table.c, line=1071) Grant unref rd(1) ld(0) frm(d4a2) flgs(0).


This is the entire domU boot log:

Started domain vm1
Linux version 2.6.12-xenU (root@xxxxxxxxxxxxxxxxxxxxxxxxx 
<mailto:root@xxxxxxxxxxxxxxxxxxxxxxxxx>) (gcc version 4.0.0
20050405 (Red Hat 4.0.0-0.40)) #1 SMP Tue Aug 23 08:23:02 CDT 2005
kernel direct mapping tables upto ffff880020000000 @ 800000-902000
Allocating PCI resources starting at 20000000 (gap: 20000000:e0000000)
Built 1 zonelists
Kernel command line:  root=/dev/sdb2 ro
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 131072 bytes)
Xen reported: 3600.120 MHz processor.
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Memory: 504576k/524288k available (1574k kernel code, 9172k reserved, 528k data,
136k init)
Mount-cache hash table entries: 256
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 3
Brought up 1 CPUs
WARNING: 1 siblings found for CPU0, should be 2
NET: Registered protocol family 16
xen_mem: Initialising balloon driver.
Grant table initialized
IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $
audit: initializing netlink socket (disabled)
audit(1124805941.510:0): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
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 16384K 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.
&#65533;&#65533;&#65533;Bmd: md driver 0.90.1 MAX_MD_DEVS=256, MD_SB_DISKS=27
NET: Registered protocol family 2
IP: routing cache hash table of 2048 buckets, 32Kbytes
TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
VFS: Cannot open root device "sdb2" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)




Robin van Leeuwen wrote:

> To make the story more complete:
>
> during the DomU boot it hangs for a while on:
>
>     Blkif frontend is using grant tables.
>     xen_blk: Initialising virtual block device driver
>
> And then spits out:
>
>     xen_blk: Timeout connecting to device!
>
>
> David F Barrera wrote:
>
> > So, I am not the only one, then. Thanks for your reply.
> >
> > David
> >
> > Robin van Leeuwen wrote:
> >
> > > I have the same here after last pull
> > >
> > >     VFS: Cannot open root device "hda1" or unknown-block(0,0)
> > >
> > > only my hda1 maps to a ext3 on a lvm device...
> > >
> > > [Debian unstable/testing, last pull 22-08-05 18:00]
> > >
> > >
> > > David F Barrera wrote:
> > >
> > > > I've built Xen with the latest hg source pull, and I am not able to 
> > > > boot domU on my x86_64 boxes using configurations and setups that 
> > > > have previously worked. Has something changed since late last week 
> > > > that would require a change in my domU configuration file?
> > > > When creating DomU, I get the following error message:
> > > >
> > > > VFS: Cannot open root device "sdb2" or unknown-block(0,0)
> > > > Please append a correct "root=" boot option
> > > > Kernel panic - not syncing: VFS: Unable to mount root fs on 
> > > > unknown-block(0,0)
> > > > The file system for DomU is ext3, and I've made sure that it is 
> > > > built in xenU kernel.
> > > > This are the xm dmesg lines displayed when error occurs:
> > > >
> > > > (XEN) (file=grant_table.c, line=1071) Grant unref rd(5) ld(0) 
> > > > frm(d485) flgs(0).
> > > > (XEN) (file=traps.c, line=878) Non-priv domain attempted 
> > > > RDMSR(00000000c0000080,00020000,00020000).
> > > > (XEN) (file=traps.c, line=870) Non-priv domain attempted 
> > > > WRMSR(00000000c0000100,00000000,00000000).
> > > > (XEN) (file=traps.c, line=870) Non-priv domain attempted 
> > > > WRMSR(00000000c0000102,00000000,00000000).
> > > > (XEN) (file=traps.c, line=878) Non-priv domain attempted 
> > > > RDMSR(00000000c0000080,00000000,00000000).
> > > > stop_this_cpu disable_local_apic
> > > >
> > > > This is the domU configuration file:
> > > >
> > > > # Kernel image file.
> > > > kernel = "/boot/vmlinuz-2.6-xenU"
> > > > # Optional ramdisk.
> > > > # ramdisk = "/boot/initrd-2.6.11.12-xenU"
> > > > # The domain build function. Default is 'linux'.
> > > > builder='linux'
> > > > # Initial memory allocation (in megabytes) for the new domain.
> > > > # memory = 256
> > > > memory = 512
> > > > # A name for your domain. All domains must have different names.
> > > > name = "vm1"
> > > > disk = [ 'phy:sdb1,0811,w','phy:sdb2,0812,w' ]
> > > > # Set if you want dhcp to allocate the IP address.
> > > > # vif = [ 'mac= AA:00:00:47:CB:34, bridge=xen-br0' ]
> > > > # Set if you want dhcp to allocate the IP address.
> > > > #dhcp="dhcp"
> > > > # Set netmask.
> > > > #netmask = '255.255.255.0'
> > > > # Set default gateway.
> > > > # gateway = '9.53.94.0'
> > > > # Set the hostname.
> > > > # hostname= "vm%d" % vmid
> > > >
> > > >
> > > > # Set root device.
> > > > root = "/dev/sdb2 ro"
> > > > # Sets runlevel 4.
> > > > # extra = "4"
> > > > #==============
> > > >
> > > > David F Barrera
> > > >
> > > >
> > > > _______________________________________________
> > > > Xen-devel mailing list
> > > > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > > http://lists.xensource.com/xen-devel
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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