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KVM kernel module permission denied on foreign distro
From: |
Giovanni Biscuolo |
Subject: |
KVM kernel module permission denied on foreign distro |
Date: |
Sat, 19 Jan 2019 10:44:02 +0100 |
Hi!
I'm trying to create my first VM via "guix system vm <config.scm>" but
it fails with this error:
--8<---------------cut here---------------start------------->8---
creating qcow2 image of 70.00 MiB...
Formatting '/gnu/store/4mz1qqv7h5g5885q1aq0izlmy01knf1g-qemu-image', fmt=qcow2
size=73400320 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Could not access KVM kernel module: Permission denied
qemu-system-x86_64: failed to initialize KVM: Permission denied
Backtrace:
2 (primitive-load "/gnu/store/hyaagi7v0qda56rivy893px3rvz?")
In ./gnu/build/vm.scm:
146:2 1 (load-in-linux-vm _ #:output _ #:qemu _ #:memory-size _ ?)
In ./guix/build/utils.scm:
616:6 0 (invoke _ . _)
./guix/build/utils.scm:616:6: In procedure invoke:
Throw to key `srfi-34' with args `(#<condition &invoke-error [program:
"qemu-system-x86_64" arguments: ("-nographic" "-no-reboot" "-m" "256" "-object"
"rng-random,filename=/dev/urandom,id=guixsd-vm-rng" "-device"
"virtio-rng-pci,rng=guixsd-vm-rng" "-virtfs"
"local,id=store_dev,path=/gnu/store,security_model=none,mount_tag=store"
"-virtfs" "local,id=xchg_dev,path=xchg,security_model=none,mount_tag=xchg"
"-virtfs" "local,id=tmp_dev,path=tmp,security_model=none,mount_tag=tmp"
"-kernel"
"/gnu/store/y5aiijqiqna1y8ypn6c0jp367813xxnc-linux-libre-4.20.3/bzImage"
"-initrd"
"/gnu/store/xdpsk95srxg6dvvy8pj3njxwk02pphpl-raw-initrd/initrd.cpio.gz"
"-device" "virtio-blk,drive=myhd" "-drive"
"if=none,file=/gnu/store/4mz1qqv7h5g5885q1aq0izlmy01knf1g-qemu-image,format=qcow2,id=myhd"
"-enable-kvm" "-append" "panic=1
--load=/gnu/store/wxrmx10lmyrif8136gndxhr1msnhkrf1-linux-vm-loader
console=ttyS0" "-net" "nic,model=virtio") exit-status: 1 term-signal: #f
stop-signal: #f] 5d2b00>)'.
builder for `/gnu/store/9dfr4cn5qpxp9jxj5jwp9nrjw4y4wsnr-qemu-image.drv' failed
with exit code 1
build of /gnu/store/9dfr4cn5qpxp9jxj5jwp9nrjw4y4wsnr-qemu-image.drv failed
View build log at
'/var/log/guix/drvs/9d/fr4cn5qpxp9jxj5jwp9nrjw4y4wsnr-qemu-image.drv.bz2'.
cannot build derivation
`/gnu/store/yhzd6g6pw3j4jpxabjbpl0qwf9j232ks-run-vm.sh.drv': 1 dependencies
couldn't be built
guix system: error: build failed: build of
`/gnu/store/yhzd6g6pw3j4jpxabjbpl0qwf9j232ks-run-vm.sh.drv' failed
--8<---------------cut here---------------end--------------->8---
the permissions on /dev/kvm (via emacs eshell+tramp) are:
--8<---------------cut here---------------start------------->8---
ls -lah /ssh:anemone.mug.biscuolo.net:/dev/kvm
crw-rw---- 1 root kvm 0 2018-12-18 2018
/ssh:anemone.mug.biscuolo.net:/dev/kvm
--8<---------------cut here---------------end--------------->8---
I'm on Debian 9 and used to run other QEMU images via libvirt
(e.g. virsh --connect qemu:///system start guixsd-test) as user with no
problems (my user is in kvm and libvirt-qemu groups)
please any hint on how I can use "gnu system vm" as a normal user?
Thanks!
Giovanni
--
Giovanni Biscuolo
Xelera IT Infrastructures
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