On Fri, 29 Jul 2011, Sean Bruno wrote:

Doesn't make a lot of sense here, but building with the i386 XEN kernel config yields the following boot up in PV mode.

Odd ... it looks like i386/XEN needs:

options         NFSCL                   # New Network Filesystem Client

Yes -- in general, I consider the existence of a XEN configuration that isn't derived from "include GENERIC" to be a mistake. However, there's a somewhat tricky balance in terms of enumerating device drivers, etc. Someone(tm) needs to sync the XEN kernel to GENERIC before we ship to make sure it's generally in line, but in the long term it will remain a maintenance problem.



Using config file "./ref9-xen32".
Started domain ref9-xen32 (id=38)
WARNING: loader(8) metadata is missing!
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2011 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
       The Regents of the University of California. All rights
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-BETA1 #0 r224482M: Fri Jul 29 13:34:25 PDT 2011

WARNING: WITNESS option enabled, expect reduced performance.
Xen reported: 2493.756 MHz processor.
Timecounter "ixen" frequency 1953125 Hz quality 0
CPU: Intel(R) Xeon(R) CPU           L5420  @ 2.50GHz (2493.76-MHz
686-class CPU)
 Origin = "GenuineIntel"  Id = 0x10676  Family = 6  Model = 17
Stepping = 6


 AMD Features=0x20100000<NX,LM>
 AMD Features2=0x1<LAHF>
real memory  = 805306368 (768 MB)
avail memory = 777121792 (741 MB)
[XEN] IPI cpu=0 irq=128 vector=RESCHEDULE_VECTOR (0)
[XEN] IPI cpu=0 irq=129 vector=CALL_FUNCTION_VECTOR (1)
[XEN] xen_rtc_probe: probing Hypervisor RTC clock
rtc0: <Xen Hypervisor Clock> on motherboard
[XEN] xen_rtc_attach: attaching Hypervisor RTC clock
xenstore0: <XenStore> on motherboard
xc0: <Xen Console> on motherboard
Event timer "ixen" quality 600
Timecounters tick every 10.000 msec
xenbusb_front0: <Xen Frontend Devices> on xenstore0
[XEN] hypervisor wallclock nudged; nudging TOD.
xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0
xn0: Ethernet address: 00:16:3e:00:00:03
xenbusb_back0: <Xen Backend Devices> on xenstore0
xctrl0: <Xen Control Device> on xenstore0
xbd0: 497MB <Virtual Block Device> at device/vbd/5632 on xenbusb_front0
xbd0: attaching as ad2
xbd1: 10240MB <Virtual Block Device> at device/vbd/768 on xenbusb_front0
xbd1: attaching as ad0
Timecounter "TSC" frequency 2493756000 Hz quality 800
WARNING: WITNESS option enabled, expect reduced performance.
Trying to mount root from ufs:/dev/ad0p2 []...
WARNING: / was not properly dismounted
rtc0: [XEN] xen_rtc_gettime
rtc0: [XEN] xen_rtc_gettime: wallclock 1311892419 sec; 132269700 nsec
rtc0: [XEN] xen_rtc_gettime: uptime 94008 sec; 379306109 nsec
rtc0: [XEN] xen_rtc_gettime: TOD 1311986427 sec; 511575809 nsec
Setting hostuuid: 1c127834-ab5a-c2e4-7b24-5ea29d364d9d.
Setting hostid: 0xdea9fbfd.
Entropy harvesting: interrupts ethernet point_to_point kickstart.
Starting file system checks:
** SU+J Recovering /dev/ad0p2
** Reading 33554432 byte journal from inode 4.
** Building recovery table.
** Resolving unreferenced inode list.
** Processing journal entries.

Mounting local file systems:.
Setting hostname: ref9-xen32.freebsd.org.
xn0: link state changed to DOWN
xn0: link state changed to UP
Starting Network: lo0 xn0.
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
       inet6 ::1 prefixlen 128
       inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
       inet netmask 0xff000000
       nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
xn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
       ether 00:16:3e:00:00:03
       media: Ethernet manual
       status: active
Starting devd.
DHCPREQUEST on xn0 to port 67
bound to -- renewal in 900 seconds.
add net ::ffff: gateway ::1
add net :: gateway ::1
add net fe80::: gateway ::1
add net ff02::: gateway ::1
kldload: can't load nfscl: File exists
/etc/rc: WARNING: Unable to load kernel module nfscl
ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/local/lib
a.out ldconfig path: /usr/lib/aout /usr/lib/compat/aout
Creating and/or trimming log files.
Starting syslogd.
No core dumps found.
Setting date via ntp.
rtc0: [XEN] xen_rtc_settime
29 Jul 17:40:33 ntpdate[585]: step time server offset
-25202.462526 sec
kldload: can't load nfscl: File exists
/etc/rc: WARNING: Unable to load kernel module nfscl
Setting NIS domain: freebsd.
Starting rpcbind.
Starting ypbind.
Clearing /tmp (X related).
Updating motd:.
Mounting late file systems:mount_nfs: nfscl is not available
mount_nfs: nfscl is not available
mount_nfs: nfscl is not available
Mounting /etc/fstab filesystems failed,  startup aborted
ERROR: ABORTING BOOT (sending SIGTERM to parent)!
Jul 29 17:40:34 ref9-xen32 init: /bin/sh on /etc/rc terminated
abnormally, going to single user mode
Enter full pathname of shell or RETURN for /bin/sh:

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