Re: BHYVE_SNAPSHOT
- In reply to: Mario Marietto : "Re: BHYVE_SNAPSHOT"
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Date: Mon, 01 May 2023 01:10:49 UTC
"Wow! That's eye popping" On Sun, Apr 30, 2023, 6:46 PM Mario Marietto <marietto2008@gmail.com> wrote: > whats the meaning of o_O ? > > Il lun 1 mag 2023, 02:04 Tomek CEDRO <tomek@cedro.info> ha scritto: > >> o_O >> >> -- >> CeDeROM, SQ7MHZ, http://www.tomek.cedro.info >> >> On Sun, Apr 30, 2023, 23:42 Matthew Grooms <mgrooms@shrew.net> wrote: >> >>> On 4/29/23 06:17, void wrote: >>> > Hi, >>> > >>> > Where can I read up about the recently introduced BHYVE_SNAPSHOT ? >>> > >>> > I can only find terse information about what it does (in man 5 >>> src.conf) >>> > but not about how to use it and/or why. >>> >>> This began as sponsored student work with the Politehnica University of >>> Bucharest back in 2016 with an eye toward developing Live MIgration as a >>> feature. The initial bhyve save/restore patch was committed back in 2020 >>> ... >>> >>> https://reviews.freebsd.org/rS360648 >>> >>> Student projects related to bhyve continued until last year, but we gave >>> up due to there being such a massive accumulation of patches with no >>> path to getting them committed. We tried reaching out to project >>> maintainers and the FreeBSD foundation alike for support and feedback, >>> but there seems to be little to no interest. There have also been >>> attempts by companies that rely on these features to and get them >>> improved and committed. Unfortunately they don't appear to be having >>> much luck either ... >>> >>> https://reviews.freebsd.org/D38858#885651 >>> >>> Would you like to see support for VM snapshots in the generic kernel? >>> How about support for saving/restore checkpoints using QCOW2, VMDK via >>> libvdsk? How about support for warm or live migration? How about USB >>> device pass-through? There are experimental patches for all these >>> features that were developed by students at UPB. In a lot of cases, >>> there are open reviews that have been waiting on feedback for ages. Here >>> is a a presentation given by Elena from UPB just last month at the >>> FreeBSD devsumit in Tokyo ... >>> >>> >>> https://wiki.freebsd.org/DevSummit/202303?action=AttachFile&do=view&target=Presentation+-+bhyvecon.pdf >>> >>> The case is quite plain. I'm not sure what the solution is to this >>> problem. I'd love to hear feedback from the community about how I've got >>> this completely wrong and how the course could be corrected. That would >>> be something. >>> >>> -Matthew >>> >>> >>> >>>