Hello again,
The two patches attached create the cgroup directory needed and remove
the warning for the ip binary missing. Still the following errors
are emitted to the log.
--------------------8<-------------------
error : virConnectGetCPUModelNames:1109 : this function is not supported by the
connection driver: virConnectGetCPUModelNames
error : virConnectGetAllDomainStats:11705 : this function is not supported by
the connection driver: virConnectGetAllDomainStats
error : virCgroupSetValueRaw:473 : Unable to write to
'/sys/fs/cgroup/unified/machine/qemu-1-Guix.libvirt-qemu/tasks': No such file
or directory
error : virCgroupRemoveRecursively:2383 : Unable to remove
/sys/fs/cgroup/unified/machine/qemu-1-Guix.libvirt-qemu/ (16)
-------------------->8-------------------
The last two may indicate there may be lurking another bug in the
cgroups configuration, but at least the machines can be created and
started/stopped seamlessly. What do you think?
Happy hacking!
Miguel
>From a5dd055ea0fc20420cca6df2d38302596d397c49 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miguel=20=C3=81ngel=20Arruga=20Vivas?=
<rosen644...@gmail.com>
Date: Sun, 27 Oct 2019 03:56:17 +0100
Subject: [PATCH 1/2] services: libvirtd: Create required control groups.
* gnu/services/virtualization.scm (libvirt-shepherd-service)
[libvirtd-activation]: New shepherd service.
[libvirtd]: Add a requirement of the new service.
---
gnu/services/virtualization.scm | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/gnu/services/virtualization.scm b/gnu/services/virtualization.scm
index bc8ac9b40a..2f26945efd 100644
--- a/gnu/services/virtualization.scm
+++ b/gnu/services/virtualization.scm
@@ -428,8 +428,19 @@ potential infinite waits blocking libvirt."))
(let* ((config-file (libvirt-conf-file config))
(libvirt (libvirt-configuration-libvirt config)))
(list (shepherd-service
+ ;; See https://libvirt.org/cgroups.html#currentLayoutGeneric
+ (documentation "Create the cgroup hierarchy required by libvirt.")
+ (provision '(libvirtd-activation))
+ (requirement '(file-system-/sys/fs/cgroup))
+ (one-shot? #t)
+ (start #~(lambda args
+ (let ((path "/sys/fs/cgroup/unified/machine"))
+ (or (access? path F_OK) (mkdir path)))))
+ (stop #~(lambda args #t)))
+ (shepherd-service
(documentation "Run the libvirt daemon.")
(provision '(libvirtd))
+ (requirement '(libvirtd-activation))
(start #~(make-forkexec-constructor
(list (string-append #$libvirt "/sbin/libvirtd")
"-f" #$config-file)
--
2.23.0
>From 24f7c06a47562f410ceb982a3b2a0d44980de392 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miguel=20=C3=81ngel=20Arruga=20Vivas?=
<rosen644...@gmail.com>
Date: Sun, 27 Oct 2019 03:59:23 +0100
Subject: [PATCH 2/2] services: libvirtd: Provide ip binary at runtime.
* gnu/services/virtualization.scm (libvirt-shepherd-service): Add sbin to
the PATH variable, as ip binary is installed there.
---
gnu/services/virtualization.scm | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gnu/services/virtualization.scm b/gnu/services/virtualization.scm
index 2f26945efd..488cd63041 100644
--- a/gnu/services/virtualization.scm
+++ b/gnu/services/virtualization.scm
@@ -444,9 +444,11 @@ potential infinite waits blocking libvirt."))
(start #~(make-forkexec-constructor
(list (string-append #$libvirt "/sbin/libvirtd")
"-f" #$config-file)
+ ;; For finding qemu and ip binaries.
#:environment-variables
- ;; For finding qemu binaries.
- '("PATH=/run/current-system/profile/bin")))
+ (list (string-append
+ "PATH=/run/current-system/profile/bin:"
+ "/run/current-system/profile/sbin"))))
(stop #~(make-kill-destructor))))))
(define libvirt-service-type
--
2.23.0
