Date: Mon, 1 Feb 2010 22:36:35 +0100 From: G VM <drums_gvm@hotmail.com> To: <info@deployis.eu> Cc: freebsd-xen@freebsd.org Subject: Re: Kernel panic on FreeBSD 8.0 RELEASE when starting kernel Message-ID: <SNT130-w118D540BB49F215E74B64291580@phx.gbl>
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G VM wrote: > Deploy IS INFO wrote: > =20 >> G VM wrote: >> =20 >>> Deploy IS INFO wrote: >>> =20 >>>> Hi=2C >>>> >>>> You can run (in theory) any FreeBSD on a hardware that has HVM >>>> support. You can check that with xm info. You can only run FreeBSD 8 >>>> as a PV guest with 32bit arch and hvm-pv with amd64. For the pv or >>>> =20 >>> the >>> =20 >>>> hvm-pv mode you have to compile the XEN (for 32bit) or XENHVM (amd64) >>>> kernel config. >>>> >>>> You'll have to install FreeBSD as a hvm guest and after a successful >>>> install you may go on with the above mentioned kernels. >>>> >>>> For pv mode use only 1 vcpu and max 2 for hvm-pv. >>>> >>>> Regards=2C >>>> Andras >>>> >>>> G VM wrote: >>>> =20 >>>>> Justin T. Gibbs wrote: >>>>> =20 >>>>>> On 1/24/2010 4:54 PM=2C G VM wrote: >>>>>> >>>>>> =20 >>>>>>> Hi all=2C >>>>>>> >>>>>>> I wanted to try running FreeBSD as a guest os. >>>>>>> >>>>>>> =20 >>>>> I followed the instructions on this url. >>>>> http://www.ita.com.ua/eng/articles.htm?id=3D34 >>>>> >>>>> I am not sure what Xen exactly does. Does it uses the kernel on the >>>>> dom0? Or does it both uses the bsd kernel on the dom0 and a modified >>>>> kernel on domU? >>>>> I do not have a done: >>>>> >>>>> make buildkernel KERNCONF=3D/XEN >>>>> >>>>> Is this necessary? I thought xen support was included in the kernel. >>>>> >>>>> Do note the instructions I followed. I used those. >>>>> / >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> freebsd-xen@freebsd.org mailing list >>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-xen >>>>> To unsubscribe=2C send any mail to >>>>> =20 >>> "freebsd-xen-unsubscribe@freebsd.org" >>> =20 >>>> =20 >>> # xm info >>> host : backupserver >>> release : 2.6.18-164.9.1.el5xen >>> version : #1 SMP Tue Dec 15 21:31:37 EST 2009 >>> machine : x86_64 >>> nr_cpus : 2 >>> nr_nodes : 1 >>> cores_per_socket : 2 >>> threads_per_core : 1 >>> cpu_mhz : 2210 >>> hw_caps : >>> 178bf3ff:ebd3fbff:00000000:00000010:00002001:00000000:0 >>> 000001f:00000000 >>> virt_caps : hvm >>> total_memory : 2046 >>> free_memory : 512 >>> node_to_cpu : node0:0-1 >>> node_to_memory : node0:512 >>> xen_major : 3 >>> xen_minor : 4 >>> xen_extra : .2 >>> xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 >>> hvm-3.0-x >>> 86_32p hvm-3.0-x86_64 >>> xen_scheduler : credit >>> xen_pagesize : 4096 >>> platform_params : virt_start=3D0xffff800000000000 >>> xen_changeset : unavailable >>> cc_compiler : gcc version 4.1.2 20080704 (Red Hat 4.1.2-44) >>> cc_compile_by : root >>> cc_compile_domain : gitco.tld >>> cc_compile_date : Wed Nov 11 21:16:28 CET 2009 >>> xend_config_format : 4 >>> >>> So this seems ok. >>> >>> My dom0 is x86_64. >>> Does this mean I have to use hvm-pv (XENHVM) -> FreeBSD amd64 install? >>> Or can I run the i386 pv (XEN) on a 64 bit dom0 too? >>> Does this also needs a copy of the compiled kernel to the dom0? >>> >>> Do note that the default 8.0-RELEASE cd does panic (this is part of the >>> config=2C when trying to do a normal install to compile the new kernel >>> (that is why I used VMware to compile the kernel)): >>> ... >>> >>> builder =3D "hvm" >>> kernel =3D "/usr/lib/xen/boot/hvmloader" >>> device_model =3D "/usr/lib64/xen/bin/qemu-dm" >>> >>> ... >>> >>> =20 >> Hi=2C >> >> You can any guests arch that fits into the xm info's xen cap line=2C so >> a 32bit pv guest is not a problem for you. We use the following >> example config: >> >> kernel =3D "/usr/lib/xen/boot/hvmloader" >> #kernel =3D "/path/to/pvkernel" >> builder=3D'hvm' >> memory =3D 1024 >> name =3D "FreeBSD8" >> vif =3D [ '' ] >> disk =3D [ 'phy:/dev/volgroup/freebsd-lv-rootfs=2Chda=2Cw'=2C >> 'file:/path/to/8.0-RELEASE-amd64-disc1.iso=2Chdd:cdrom=2Cr' ] >> boot=3D"cda" >> vnc=3D1 >> vncpasswd=3D'ihavepassword' >> #vcpus=3D'2' >> >> The commented parts are should be tried only after a succesful install >> and of course the amd64 iso could be an i386 also. Under 3.3.1 Xen it >> works one a X2270 test server and a x2250 prod server. >> >> Regards=2C >> Andras >> >> >> =20 > I used the config you provided and have a 8.0-RELEASE x86 cd. > When I boot from the CD the kernel panics: > AMD Features2=3D.... > real memory =3D ... 500MB > avail memory =3D ... 471MB > panic: vm_fault: fault on nofault entry=2C addr: c3253000 > cpuid =3D 0 > > :S That is the reason I compiled the kernel in VMware as I can install > FreeBSD there. > BUt then I got the panic I have in the beginning of this mailling list > topic. > If I am not mistaken I also tried the AMD64 cd and that did fail also. > However when using 7.2 it just works ok. > > Anyone an idea? > BTW=2C thanks so far for your help guys! > > _______________________________________________ > freebsd-xen@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-xen > To unsubscribe=2C send any mail to "freebsd-xen-unsubscribe@freebsd.org" > > > =20 Anyone has an idea? About the problem starting a XEN kernel OR the problem starting the normal kernel with hvmloader? Is this probably a kernel bug? And if so=2C where can I report it? Is it likely Xen is the problem or FreeBSD is the problem? Do I need more information than this? I can provide everything(even memory dump if that would help). Kind regards =
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