Re: FreeBSD/Xen suspend/resume
On 1/19/2019 4:59 AM, Uni Gaia wrote: Does anyone know if suspend/resume works for a FreeBSD/Xen dom0 ? domU? Hey Uni, I'm not sure how many folks are subscribed to the xen@ mailing list. You may get a better answer here: FreeBSD dom0 is based on the Xen PVH virtualization mode which has seen two major iterations. PVHv1 has been in the tree for some time. I can't remember when PVHv2 hit the tree but I'm pretty sure it supplanted v1. It might be in 12-RELEASE? Check the release notes. You probably want v2 as it's more feature complete. The port was done by Roger who, I believe, works for Cirtix Research. My point being that the port should be of very high quality and he/they probably want to hear if something isn't working with PVHv2.If I'm misrepresented anything, hopefully he'll chime in here. Hope this helps, -Matthew ___ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
Re: FreeBSD/Xen suspend/resume
Hey Uni, On 1/19/2019 4:59 AM, Uni Gaia wrote: > Does anyone know if suspend/resume works for a FreeBSD/Xen dom0 ? domU? I'm guessing by suspend/resume you mean xl save and xl restore. They work for FreeBSD domU (with Linux dom0), tested on 13-CURRENT r342020. I have not tested for FreeBSD as dom0 because I do not have it set up. Hey Matthew On Sun, 20 Jan 2019 at 04:32, Matthew Grooms wrote: > > On 1/19/2019 4:59 AM, Uni Gaia wrote: > > Does anyone know if suspend/resume works for a FreeBSD/Xen dom0 ? domU? > > Hey Uni, > > I'm not sure how many folks are subscribed to the xen@ mailing list. You > may get a better answer here: > > FreeBSD dom0 is based on the Xen PVH virtualization mode which has seen > two major iterations. PVHv1 has been in the tree for some time. I can't > remember when PVHv2 hit the tree but I'm pretty sure it supplanted v1. > It might be in 12-RELEASE? Roger committed it to CURRENT on July 19 [0], and AFAIK it has made it into 12-RELEASE. > Check the release notes. You probably want v2 > as it's more feature complete. The port was done by Roger who, I > believe, works for Cirtix Research. My point being that the port should > be of very high quality and he/they probably want to hear if something > isn't working with PVHv2.If I'm misrepresented anything, hopefully he'll > chime in here. I'm guessing you replied to the wrong thread, and you meant to reply to the ARM/ARM64 thread? > Hope this helps, > > -Matthew > [0] https://lists.freebsd.org/pipermail/freebsd-xen/2018-July/003189.html -- Regards, Pratyush Yadav ___ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
Re: FreeBSD/Xen suspend/resume
On 1/20/19 11:21 AM, Pratyush Yadav wrote: Hey Uni, On 1/19/2019 4:59 AM, Uni Gaia wrote: Does anyone know if suspend/resume works for a FreeBSD/Xen dom0 ? domU? I'm guessing by suspend/resume you mean xl save and xl restore. They work for FreeBSD domU (with Linux dom0), tested on 13-CURRENT r342020. I have not tested for FreeBSD as dom0 because I do not have it set up. I am sorry, perhaps it wasn't clear enough. I mean the domU successfully restoring (and obviously, suspending properly in the first place) upon a dom0 suspend/resume cycle. For instance, with QubesOS, which is Linux/Xen based, all virtual machines resume working normally after suspending and resuming the machine. I am considering FreeBSD for a home project, and it requires virtualization (jails not enough). Because it makes no sense to keep the machine on 24/7 in this scenario, and because it would be cumbersome to shutdown the machine every night, I am looking for the possibility of suspending/resuming. I know this works with a Linux dom0 and at least Linux domUs. My preference is FreeBSD dom0 and domUs. But if FreeBSD dom0 fails to suspend/resume and domUs work, I might consider (reluctantly) Linux for the dom0 role. ___ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
Re: FreeBSD/Xen suspend/resume
On Sat, Jan 19, 2019 at 05:00:56PM -0600, Matthew Grooms wrote: > On 1/19/2019 4:59 AM, Uni Gaia wrote: > > Does anyone know if suspend/resume works for a FreeBSD/Xen dom0 ? domU? > > Hey Uni, > > I'm not sure how many folks are subscribed to the xen@ mailing list. You may > get a better answer here: > > FreeBSD dom0 is based on the Xen PVH virtualization mode which has seen two > major iterations. PVHv1 has been in the tree for some time. I can't remember > when PVHv2 hit the tree but I'm pretty sure it supplanted v1. It might be in > 12-RELEASE? Check the release notes. You probably want v2 as it's more > feature complete. The port was done by Roger who, I believe, works for > Cirtix Research. My point being that the port should be of very high quality > and he/they probably want to hear if something isn't working with PVHv2.If > I'm misrepresented anything, hopefully he'll chime in here. Thanks for the detailed description! PVHv1 was more similar to classic PV, while PVHv2 is more similar to HVM. PVHv1 support has been removed from upstream Xen since 4.10 IIRC, so I would strongly recommend to use PVHv2. In fact that's the only way to use the 4.11 Xen packages in the ports tree. Roger. ___ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
Re: FreeBSD/Xen suspend/resume
On Mon, 21 Jan 2019 at 12:07, Uni Gaia wrote: > > On 1/20/19 11:21 AM, Pratyush Yadav wrote: > > Hey Uni, > > > > On 1/19/2019 4:59 AM, Uni Gaia wrote: > >> Does anyone know if suspend/resume works for a FreeBSD/Xen dom0 ? domU? > > > > I'm guessing by suspend/resume you mean xl save and xl restore. They > > work for FreeBSD domU (with Linux dom0), tested on 13-CURRENT r342020. > > I have not tested for FreeBSD as dom0 because I do not have it set up. > > I am sorry, perhaps it wasn't clear enough. > > I mean the domU successfully restoring (and obviously, suspending > properly in the first place) upon a dom0 suspend/resume cycle. > > For instance, with QubesOS, which is Linux/Xen based, all virtual > machines resume working normally after suspending and resuming the machine. > > I am considering FreeBSD for a home project, and it requires > virtualization (jails not enough). > > Because it makes no sense to keep the machine on 24/7 in this scenario, > and because it would be cumbersome to shutdown the machine every night, > I am looking for the possibility of suspending/resuming. > > I know this works with a Linux dom0 and at least Linux domUs. > > My preference is FreeBSD dom0 and domUs. > > But if FreeBSD dom0 fails to suspend/resume and domUs work, I might > consider (reluctantly) Linux for the dom0 role. AFAIK, FreeBSD does not support suspend/resume to disk at all [0], let alone FreeBSD with Xen (someone correct me if I'm wrong). There is support for suspending to RAM, but that is shaky from what I can gather [1]. But you can look into Xen's save and restore features (xl save and xl restore). They save/restore a domU to/from disk. So if in your setup you can shut down your dom0, and saving states of domUs is enough, you can set up a script to save your domUs to a file before shutdown and get them running back up on boot. Otherwise, you can look into bhyve, FreeBSD's virtualization solution. I don't know if bhyve supports suspend and resuming of VMs, but you can ask the folks at the freebsd-virtualization@ mailing list. [0] https://wiki.freebsd.org/IdeasPage#Suspend_to_disk [1] https://wiki.freebsd.org/SuspendResume Regards, Pratyush Yadav ___ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
Re: FreeBSD/Xen suspend/resume
On 1/21/2019 3:08 AM, Pratyush Yadav wrote: ... Otherwise, you can look into bhyve, FreeBSD's virtualization solution. I don't know if bhyve supports suspend and resuming of VMs, but you can ask the folks at the freebsd-virtualization@ mailing list. Not at present. But, support for suspend, resume & migration is getting closer every day ... https://github.com/FreeBSD-UPB/freebsd/branches -Matthew ___ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
