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| kata-irc-bot | <alessandro.randazzo> quick question : I'm following the documentation guide and I has arrived at : sudo kata-runtime kata-check and I'm getting the error : file /usr/share/kata-containers/vmlinuz.container does not exist . Should I jump on https://github.com/kata-containers/packaging/tree/master/kernel#build-kata-containers-kernel and follow the instructions? Thanks (My environment is based on a lubuntu vm running in vmware workstation with | 08:18 |
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| kata-irc-bot | enabled nested virtualization) (edited) | 08:18 |
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| kata-irc-bot | <graham.whaley> @alessandro.randazzo - *exactly* which document are you following - as that will determine what/how that binary should have been installed... please point us to the exact document you used, and then we can try and figure out if there is a documentation flow error or if something has actually gone wrong etc. | 09:13 |
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| kata-irc-bot | <alessandro.randazzo> @graham.whaley I've started from the beginning of this : https://github.com/kata-containers/documentation/blob/master/Developer-Guide.md#requirements-to-build-individual-components . I firstly checked the requirements to build individual components , then build and install kata containers runtime, then after running 'check hardware requirements' I got the above error. | 09:46 |
| kata-irc-bot | <graham.whaley> Ah, thanks @alessandro.randazzo - then, yes indeed, I think you will need to build and install the other components required by the runtime (the kernel image and rootfs image). | 09:54 |
| kata-irc-bot | <alessandro.randazzo> I've installed the latest stable version of golang...I will let you know if it can generate some trouble instead of using the recommended one. | 10:08 |
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| stefanha | Is Kata moving to a newer kernel in the next release? virtio-fs has gotten a number of bug fixes that we'd like to make available in Kata, so I wanted to check which kernel version we should target. | 14:42 |
| gwhaley | stefanha: we discussed this last week or so I think whilst we were pushing throught the kernel fragments PR - iirc, the decision is to stay on latest longterm, hence still 4.19.x right now. | 14:49 |
| stefanha | gwhaley: Thank you! We're keen to be on a recent kernel version but I understand Kata wants a long-term/stable kernel. | 14:52 |
| gwhaley | stefanha: it is a constant debate we have - we keep itching to move to 5.x, but we have to decide between longterm/stable/HEAD-ish..... and currently longterm wins ;-) | 14:56 |
| stefanha | gwhaley: I think the virtio-fs strategy will be to treat Kata's kernel as a stable branch - only backport critical fixes. If it's a recent kernel we could backport the latest upstream code (easier to do and potentially has better performance and features). | 15:05 |
| stefanha | gwhaley: They have pros and cons, but it sounds like treating it as a stable branch is the right fit. | 15:05 |
| gwhaley | ^^ /cc @gmmaha @eernst just fyi. | 15:11 |
| devimc | gwhaley, stefanha, +1 - I'd like to support PVH (raw kernel) | 15:30 |
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| gmmaha | gwhaley: stefanha: thanks.. yes, we are staying on 4.19.x for now. | 15:50 |
| gmmaha | will see how soon we can move to 5.x given there are others who would like that change... | 15:50 |
| gmmaha | now that we have fragments in place (thanks to devimc) we should think about hoow upgrades would work for us. | 15:50 |
| devimc | gmmaha, and thanks to gwhaley ^^ | 15:52 |
| devimc | gmmaha, the current fragments don't work with 5.x, a lot of option were removed | 15:53 |
| devimc | or renamed | 15:53 |
| gwhaley | devimc, gmmaha: oh, the pain :-( Yeah, one of the next steps with the fragments (which I had originally, but removed as @Eric was hoping we could do without it ... but, it turns out we probably cannot....) is to support kernel version specific fragments :-( | 15:55 |
| aleofuu38 | I got stuck in building the kata-kernel...may I past the error in here? | 16:06 |
| gwhaley | aleofuu38: sure you can - if it gets too complex, then maybe we open a github issue. I presume you are using the instructions from https://github.com/kata-containers/packaging/tree/master/kernel and using build-kernel.sh | 16:07 |
| gwhaley | ^^ @jcvenega | 16:08 |
| aleofuu38 | gwhaley yes, I locally downloaded all stuff from https://github.com/kata-containers/packaging and followed the instructions ...below the error : INFO: Clone config and patchesINFO: Config version: 47INFO: Kernel version: 4.19.52 LEX scripts/kconfig/zconf.lex.c HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/confscripts/kconfig/co | 16:15 |
| aleofuu38 | nf --syncconfig Kconfig****** Configuration file ".config" not found!****** Please run some configurator (e.g. "make oldconfig" or*** "make menuconfig" or "make xconfig").***make[2]: *** [scripts/kconfig/Makefile:69: syncconfig] Error 1make[1]: *** [Makefile:532: syncconfig] Error 2make: *** [Makefile:631: include/config/auto.conf.cmd] Error 2 | 16:15 |
| aleofuu38 | should I try "make oldconfig" ? | 16:17 |
| gwhaley | aleofuu38: did you run the build-kernel.sh setup first - like on https://github.com/kata-containers/packaging/tree/master/kernel#setup-kernel-source-code - as that should generate/copy the .config file into the kernel source tree before it tries to build it | 16:18 |
| aleofuu38 | yes I did | 16:19 |
| aleofuu38 | Do I try re-running it? | 16:20 |
| gwhaley | hmm, OK - two suggestions then - you could run 'bash -x ./build-kernel.sh setup' and check what it is doing... or, you can open a github Issue and add details of what you ran, and what your system is :-) | 16:20 |
| gwhaley | aleofuu38: I think you can re-run it - it may complain the source tree already exists though. so, you may need to rm the untar'd kernel source subdir and re-run. iirc, it will spot you have already downloaded the kernel tarball, and not pull that again, just untar it... | 16:21 |
| aleofuu38 | thus, under kernel folder should I remove everything except linux-4.19.52.tar.xz ? | 16:24 |
| gwhaley | no - iirc, there is a subdir created (I don't have a 'used' tree to look at right now), that contains all the kernel source - that is the dir to remove. So, do not remove build-kernel.sh, configs, kata_config_version, patches or the README - there should be another dir though that you need to remove... maybe 'linux-4.19.38' or similar... /me guesses at name now... | 16:27 |
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| gwhaley | aleofuu38: called something like 'kata-linux-<version>-<version>' I think, from trying to decode the script ;-) In fact, if you run the script, it will probably complain that the dir already exists, and tell you its name.. | 16:30 |
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| aleofuu38 | ok, under kernel dir there is another one ,named kata-linux-4.19.52-47. I guest is the only to be removed | 16:30 |
| gwhaley | yep! | 16:30 |
| aleofuu38 | (y) | 16:31 |
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| aleofuu38 | after some other installation like libelf-dev , I re-run the kernel building process and seems everithing ok. Finale message is : Kernel: arch/x86/boot/bzImage is ready (#1) | 16:55 |
| aleofuu38 | sorry for typos :) | 16:56 |
| gwhaley | aleofuu38: excellent. yes, you need iirc all the tools on the host you would normally need to do a kernel build... the only other option would be for us to set up a docker image with all the tools as an alternative (which we do do for the rootfs image build iirc)... glad it is working now ;-) | 16:56 |
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| aleofuu38 | now I can try installing the kernel and then can I re-run sudo kata-runtime kata-check or after installed the kernel I also need to create a rootfs image first? | 17:02 |
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| gwhaley | aleofuu38: I suspect you will need a rootfs image as well. have a look in the osbuilder repo for that. | 17:02 |
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