http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=544
Summary: domU won't boot when vcpus=1 with domu scsi compiled-in
kernel
Product: Xen
Version: unstable
Platform: x86
OS/Version: Linux-2.6
Status: NEW
Severity: major
Priority: P2
Component: Hypervisor
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: wenshengwang@xxxxxxxxx
After I changed scsi snd sd from module to compiled-in, the resulted kernel
won't boot when vcpus set to 1, when it set to 2, it boot OK.
I use XFS for domu file system.
When I try to boot domu with vcpus=1, it couldn't find root device.
--------------
...
NET: Registered protocol family 17
Using IPI No-Shortcut mode
IP-Config: Complete:
device=eth0, addr=192.168.1.212, mask=255.255.255.0, gw=192.168.1.1,
host=centos42-01, domain=, nis-domain=(none),
bootserver=1.2.3.4, rootserver=1.2.3.4, rootpath=
Looking up port of RPC 100003/2 on 1.2.3.4
portmap: server 1.2.3.4 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 1.2.3.4
portmap: server 1.2.3.4 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
mount: server 1.2.3.4 not responding, timed out
Root-NFS: Server returned error -5 while mounting /tftpboot/centos42-01
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 unknown-block(2,0)
...
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