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| kata-irc-bot2 | <bergwolf> FYI/Reminder, @xu has sent out a notice on kata-dev mailing list that there is no AC meeting this week | 08:34 |
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| kata-irc-bot2 | <graham.whaley> yep, thanks @bergwolf - I will circulate that reminder internally here :slightly_smiling_face: | 08:48 |
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| davidgiluk | gmmaha: So did you get virtio-fs + hugepage + virtio-net working? | 16:11 |
| gmmaha | davidgiluk: ohh yes, we did. it was an issue with NEMU and vhost-net that was breaking things. | 16:12 |
| davidgiluk | gmmaha: Ah great; out of interest what was the problem? | 16:12 |
| gmmaha | the symptom is when hugepages is enabled with vhost-net and machine_type=virt, the container is not able to have a network connection. It has an IP but is unable to reach the gateway. | 16:13 |
| gmmaha | the issue itself is being debugged now. hopefully we will know soon on why that was happening. | 16:13 |
| davidgiluk | ok | 16:14 |
| davidgiluk | gmmaha: I saw the mention of VM snapshotting - is that the thing where you use a fixed copy of memory? | 16:14 |
| gmmaha | davidgiluk: templating? yeah. one where we use the same kernel, initramfs and agent memory. | 16:16 |
| davidgiluk | gmmaha: If I remember correctly that's done as a fudged type of migrate (that doesn't bother with ram) - now we've not taught virtiofs how to do migrate yet | 16:17 |
| davidgiluk | gmmaha: Although if you hotplug the virtiofs after the template then you have a good chance I think | 16:17 |
| gmmaha | aah.. makes sense why virtio-fs will not work with it. | 16:18 |
| gmmaha | wonder how hotplug of the rootfs will work there. | 16:19 |
| davidgiluk | ah actually - even the hotplug probably wont work | 16:19 |
| davidgiluk | gmmaha: If I remember, the templating doesn't with shared=on - because otherwise the template would get overwritten - but we need shared=on for vhost-user | 16:20 |
| kata-irc-bot2 | Action: graham.whaley notes both vmcache and templating have their individual own docs over at https://github.com/kata-containers/documentation/tree/master/how-to | 16:20 |
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| gmmaha | davidgiluk: they turn on sharing only under one condition. https://github.com/kata-containers/runtime/blob/9ef20dd837419058941a92152355f1c1456d5444/virtcontainers/qemu.go#L414 | 16:21 |
| gmmaha | @graham.whaley yeah was going to say that. | 16:21 |
| davidgiluk | gmmaha: Right; their idea is that when they create a new template they turn shared=on so that the content gets written back to the template file | 16:22 |
| davidgiluk | gmmaha: The problem is that when they run a second time they don't want to change the template file so can't run with shared=on | 16:22 |
| gmmaha | right.. so that won't work with virtio-fs given we always need it shared. :( | 16:22 |
| davidgiluk | gmmaha: It needs another way to keep the template file distinct from the running shared memory | 16:23 |
| gmmaha | right. i should have said, won't work in the current setup. | 16:23 |
| davidgiluk | gmmaha: I once tried something unspeakable with lvm: https://lists.gnu.org/archive/html/qemu-devel/2018-04/msg03055.html | 16:26 |
| * gmmaha stares speechless. | 16:29 | |
| davidgiluk | sorry, I should have asked if you had just eaten before suggesting that | 16:29 |
| gmmaha | hehhe | 16:29 |
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