[Xen-devel] stubdom questions

["Zhai, Edwin" <edwin.zhai@xxxxxxxxx>]

samuel,
I have a try with HVM stubdomain on r17062, but failed to make on 32b platform.
Attached patch can fix it, but don't know if okay.

After installation, I failed to start stubdom. So I created it manually and got 
following debug mesg(both HVMdomain and stubdom are created)

Can you give some lights on following questions:
1. I use default vnclisten. Does it matter?
2. Seems qemu in stubdom has some issue and couldn't update the 'vnc-port' in 
xenstore. Or the stubdom didn't run at all. How can I debug it?
3. "Create /etc/xen/stubdom-hvmconfig" in readme -- seems "hvmconfig" should 
match the domain name rather than config file.

Thanks,


=================== running error =============================
# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  1813     2     r-----   2489.0
EdwinHVMDomainVtd2                          44   128     1     ------      0.0
stubdom-EdwinHVMDomainVtd2                  45    32     1     -b----      0.0


[root@vt-gang32 ~]# /usr/lib/xen/bin/stubdom-dm -d 44 -domain-name EdwinHVMDomai
nVtd2 -m 128 -vnc 127.0.0.1:0 -vncunused -monitor vc -vcpus 1 -boot c -serial pt
y -acpi -M xenfv
xenstore-read: couldn't read path /local/domain/44/console/vnc-port
Using config file "./stubdom-EdwinHVMDomainVtd2".
Started domain stubdom-EdwinHVMDomainVtd2
xenstore-read: couldn't read path /local/domain/44/console/vnc-port
Failed to read /local/domain/0/backend/vbd/45/768/feature-flush-cache.
16777216 sectors of 512 bytes
**************************
blk_open(/local/domain/45/device/vbd/768) -> 5
xs_read(/local/domain/45/device/vbd/5632/phantom_vbd): ENOENT
xs_watch(/local/domain/0/backend/vbd/45/5632/params, hdc)
******************* BLKFRONT for /local/domain/45/device/vbd/5632 **********


backend at /local/domain/0/backend/vbd/45/5632
xenstore-read: couldn't read path /local/domain/44/console/vnc-port
xenstore-read: couldn't read path /local/domain/44/console/vnc-port
xenstore-read: couldn't read path /local/domain/44/console/vnc-port

====================================================================

================== compile error ===================================
make[2]: Entering directory 
`/home/another/gzhai/srcs/hg/xen-dev/hv/extras/mini-os/arch/x86'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory 
`/home/another/gzhai/srcs/hg/xen-dev/hv/extras/mini-os/arch/x86'
i686-xen-elf-ld -r  -m elf_i386 arch/x86/x86_32.o blkfront.o events.o 
fs-front.o 
gnttab.o hypervisor.o kernel.o main.o mm.o netfront.o sched.o lib/ctype.o 
lib/math.o lib/printf.o lib/string.o lib/sys.o lib/xmalloc.o lib/xs.o 
xenbus/xenbus.o console/console.o console/xencons_ring.o lwip.a 
/home/another/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/i386-dm-stubdom/qemu.a 
/home/another/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/i386-dm-stubdom/libqemu.a 
-Larch/x86 -lx86_32  -L../../stubdom/libxc -lxenctrl -lxenguest -lpci -lz -lc 
-o 
mini-os.o
i686-xen-elf-objcopy -w -G xenos_* -G _start mini-os.o mini-os.o
i686-xen-elf-ld  -m elf_i386 -T arch/x86/minios-x86_32.lds mini-os.o  -o mini-os
mini-os.o: In function `bdrv_snapshot_dump':
/home/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/block.c:1042: undefined reference 
to `__moddi3'
/home/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/block.c:1042: undefined reference 
to `__moddi3'
mini-os.o: In function `vmdk_is_allocated':
/home/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/block-vmdk.c:547: undefined 
reference to `__moddi3'
mini-os.o: In function `vmdk_read':
/home/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/block-vmdk.c:563: undefined 
reference to `__moddi3'
mini-os.o: In function `cloop_read':
/home/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/block-cloop.c:143: undefined 
reference to `__moddi3'
mini-os.o:/home/gzhai/srcs/hg/xen-dev/hv/stubdom/ioemu/block-bochs.c:182: more 
undefined references to `__moddi3' follow
make[1]: *** [mini-os] Error 1
make[1]: Leaving directory 
`/home/another/gzhai/srcs/hg/xen-dev/hv/extras/mini-os'
make: *** [qemu-stubdom] Error 2
===================================================================


-- 
best rgds,
edwin

Attachment: stubdom_fix.patch
Description: Text document

Attachment: xmexamplestub
Description: Text document

Attachment: stubdom-EdwinHVMDomainVtd2
Description: Text document

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