Re: Boot FreeBSD 10 in HVM mode under Xen?
--On 06 August 2015 13:46 +0200 Roger Pau Monné roger@citrix.com wrote: Hello, Sorry for the delay, as usual I've been busy with a bunch of other stuff. You can find the patch against HEAD here: https://people.freebsd.org/~royger/0001-xen-allow-disabling-PV-disks-and- nics.patch The description is self-explanatory I think. I've not tried to apply it to stable-10, but I don't think there have been many changes in this area in general. If you need help backporting it ping me and I will provide a suitable version. Hi, Thanks for the patch! - I couldn't apply it automatically (not entirely sure what to do with a git diff like that :) - and, the hvm.c part of patch wouldn't apply cleanly anyway (too much difference). *Having said that* - I applied it by hand to my 10.1-R system, and it seems to work perfectly. I've put the XENHVM and xenpci back in the kernel, re-enabled veridian for that VM, and put 'hw.xen.disable_pv_nics=1' in boot loader. I now have a PV disk, but HVM NIC (re0) based machine - that's agile, and works with OpenVPN and inter-VM routing. I can post the standard 'diff -u' patchset against 10.1 back to the list if needed (I know other people had PV NIC issues and were using the same non-agile boot as HVM fix for it). Cheers, -Karl ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
El 06/08/15 a les 15.06, Karl Pielorz ha escrit: --On 06 August 2015 13:46 +0200 Roger Pau Monné roger@citrix.com wrote: Hello, Sorry for the delay, as usual I've been busy with a bunch of other stuff. You can find the patch against HEAD here: https://people.freebsd.org/~royger/0001-xen-allow-disabling-PV-disks-and- nics.patch The description is self-explanatory I think. I've not tried to apply it to stable-10, but I don't think there have been many changes in this area in general. If you need help backporting it ping me and I will provide a suitable version. Hi, Thanks for the patch! - I couldn't apply it automatically (not entirely sure what to do with a git diff like that :) - and, the hvm.c part of patch wouldn't apply cleanly anyway (too much difference). *Having said that* - I applied it by hand to my 10.1-R system, and it seems to work perfectly. I've put the XENHVM and xenpci back in the kernel, re-enabled veridian for that VM, and put 'hw.xen.disable_pv_nics=1' in boot loader. I now have a PV disk, but HVM NIC (re0) based machine - that's agile, and works with OpenVPN and inter-VM routing. I can post the standard 'diff -u' patchset against 10.1 back to the list if needed (I know other people had PV NIC issues and were using the same non-agile boot as HVM fix for it). I'm going to let the patch sit here for a while so people can test/comment. Since I'm going on vacations next week, if there are no complains I'm planning to apply it when I'm back on the 17th. Roger. ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
--On 31 July 2015 17:01 +0200 Roger Pau Monné roger@citrix.com wrote: Yes, this is certainly possible. IIRC I posted a patch to the freebsd-xen mailing list in order to do that. I will try to find/refresh it and post it again so you can try it. It might have to wait until Monday however, since I'm quite busy today. Hi, I realise you're busy - but did you get a chance to dig out that patch? - We're just installing hotfixes here [which reminded me - as we have an number of non-agile HVM machines to move around! :(] Thanks, -Karl ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
El 31/07/15 a les 16.59, Karl Pielorz ha escrit: --On 31 July 2015 16:17 +0200 Roger Pau Monné roger@citrix.com wrote: This is a bug then. You should be able to boot without XENHVM/xenpci, and get a pure HVM guest with no PV devices at all. After removing XENHVM and xenpci - booting a FreeBSD 10.1-p8 AMD64 kernel under XenServer 6.5 gets the output below (first few lines scroll off the console in XenServer). cpuid = 0; apic id = 00 instruction pointer = 0x20:0x80d96af9 stack pointer = 0x28:0x8191bbe0 frame pointer = 0x28:0x8191bbf0 code segment= base 0x0, limit 0xf, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags= interrupt enabled, IOPL = 0 current process = 0 (swapper) trap number = 9 panic: general protection fault cpuid = 0 KDB: strack backtrace: #0 0x80946ae0 at kdb_backtrace+0x60 #1 0x8090bc05 at panic+0x155 #2 0x80d02aef at trap_fatal+0x38f #3 0x80d0274c at trap+0x75c #4 0x80ce8432 at calltrap+0x8 #5 0x80918e1f at tc_init+0x23f #6 0x80d967a1 at hv_vmbus_init+0x191 #7 0x80d9735e at vmbus_bus_init+0x1e #8 0x808bad38 at mi_startup+0x108 #9 0x802d9f0c at btext+0x2c Ouch, I guess this is the Xen HyperV support badly interacting with FreeBSD again. XenServer enables the viridian extensions by default, which really messes up with FreeBSD. You should be able to disable the extensions by hand, as reported in: https://lists.freebsd.org/pipermail/freebsd-xen/2013-October/001756.html But we need a proper way to sort this out anyway. Roger. ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
El 31/07/15 a les 16.38, Karl Pielorz ha escrit: --On 31 July 2015 16:17 +0200 Roger Pau Monné roger@citrix.com wrote: This is a bug then. You should be able to boot without XENHVM/xenpci, and get a pure HVM guest with no PV devices at all. I'm just setting up another less critical system to reproduce it. To confirm, I just take GENERIC and remove 'XENHVM' and 'xenpci', and it should boot without PV. I'll post the results / panic exact versions when I get it (though some goes off the top of the console = could be interesting). Could you setup the serial console on FreeBSD following: https://www.freebsd.org/doc/handbook/serialconsole-setup.html Then add serial='pty' to your config file and create the domain using `xl create -c config_file`. This way you can get the full serial output. Since this seems to be getting quite popular (booting without PV devices), I think adding a sysctl to disable PV nics and PV hard drives would be interesting. We could still use some of the PV goodies, like the timer. Can you technically have a system that has HVM network (i.e. realtek) but still has disk PV, and/or is agile? (i.e. can run xen-tools)? That'd kind of be a 'perfect' workaround for all our network woes (openvpn, routing etc.) at the moment - even if the performance of HVM re0 isn't as good as a PV xn0 Yes, this is certainly possible. IIRC I posted a patch to the freebsd-xen mailing list in order to do that. I will try to find/refresh it and post it again so you can try it. It might have to wait until Monday however, since I'm quite busy today. Roger. ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
--On 31 July 2015 17:01 +0200 Roger Pau Monné roger@citrix.com wrote: Can you technically have a system that has HVM network (i.e. realtek) but still has disk PV, and/or is agile? (i.e. can run xen-tools)? Yes, this is certainly possible. IIRC I posted a patch to the freebsd-xen mailing list in order to do that. I will try to find/refresh it and post it again so you can try it. It might have to wait until Monday however, since I'm quite busy today. That'd be wonderful if you can sort that at some point - it'd be a much better work around than we currently have for a number of machines. Heck we could probably get rid of a whole pool of 'have to run non-agile HVM only' FBSD machines. Thanks for your time, -Karl ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
--On 31 July 2015 16:17 +0200 Roger Pau Monné roger@citrix.com wrote: This is a bug then. You should be able to boot without XENHVM/xenpci, and get a pure HVM guest with no PV devices at all. After removing XENHVM and xenpci - booting a FreeBSD 10.1-p8 AMD64 kernel under XenServer 6.5 gets the output below (first few lines scroll off the console in XenServer). cpuid = 0; apic id = 00 instruction pointer = 0x20:0x80d96af9 stack pointer = 0x28:0x8191bbe0 frame pointer = 0x28:0x8191bbf0 code segment= base 0x0, limit 0xf, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags= interrupt enabled, IOPL = 0 current process = 0 (swapper) trap number = 9 panic: general protection fault cpuid = 0 KDB: strack backtrace: #0 0x80946ae0 at kdb_backtrace+0x60 #1 0x8090bc05 at panic+0x155 #2 0x80d02aef at trap_fatal+0x38f #3 0x80d0274c at trap+0x75c #4 0x80ce8432 at calltrap+0x8 #5 0x80918e1f at tc_init+0x23f #6 0x80d967a1 at hv_vmbus_init+0x191 #7 0x80d9735e at vmbus_bus_init+0x1e #8 0x808bad38 at mi_startup+0x108 #9 0x802d9f0c at btext+0x2c I'll try rebuilding it with debugger support (it's been a while). Cheers, -Karl ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
On 07/31/2015 11:22, Karl Pielorz wrote: --On 31 July 2015 17:09 +0200 Roger Pau Monné roger@citrix.com wrote: Ouch, I guess this is the Xen HyperV support badly interacting with FreeBSD again. XenServer enables the viridian extensions by default, which really messes up with FreeBSD. You should be able to disable the extensions by hand, as reported in: https://lists.freebsd.org/pipermail/freebsd-xen/2013-October/001756.html Fantastic - that works! Cheers, -Karl I'm guessing my kernel boots fine probably because I've disabled hyperv support in my kernel config. viridian probably explains why I see this in dmesg though: Hypervisor: Origin = Microsoft Hv ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: Boot FreeBSD 10 in HVM mode under Xen?
--On 31 July 2015 17:09 +0200 Roger Pau Monné roger@citrix.com wrote: Ouch, I guess this is the Xen HyperV support badly interacting with FreeBSD again. XenServer enables the viridian extensions by default, which really messes up with FreeBSD. You should be able to disable the extensions by hand, as reported in: https://lists.freebsd.org/pipermail/freebsd-xen/2013-October/001756.html Fantastic - that works! Cheers, -Karl ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
