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services: Add xen-guest-agent-service-type.

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* gnu/services/virtualization.scm (xen-guest-agent-configuration,
  xen-guest-agent-service-type): New variables.
* doc/guix.texi: Document them.

Change-Id: Id1b1f4fc2b193d73f4401e74a214222dfe1b6ea7
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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Karl Hallsby 2025-01-08 14:19:01 -06:00 • committed by Ludovic Courtès
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commit 8d7578ba6c
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24
doc/guix.texi
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@ -38175,6 +38175,30 @@ Name of the @code{xe-guest-utilities} log file.
@end table
@end deftp
@code{xe-guest-utilities} is the standard guest utilities used for Xen
guests. More recently the Xen Project has been working to develop
@code{xen-guest-agent}, a modern drop-in replacement for
@code{xe-guest-utilities}. While they nearly have feature-parity,
@code{xen-guest-agent} currently lacks some of the features of its
predecessor, namely disk metrics and ``PV drivers version''.
@defvar xen-guest-agent-service-type
Service type for the Xen guest agent service.
@end defvar
@deftp {Data Type} xen-guest-agent-configuration
Configuration for the @code{xen-guest-agent} service.
@table @asis
@item @code{package} (default: @code{xen-guest-agent})
The Xen guest agent package to use.
@end table
@end deftp
@quotation Warning
@code{xe-guest-utilities} and @code{xen-guest-agent} are mutually exclusive.
@end quotation
@anchor{build-vm}
@subsubheading Virtual Build Machines

34
gnu/services/virtualization.scm
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@ -113,7 +113,9 @@
qemu-guest-agent-service-type
xe-guest-utilities-configuration
xe-guest-utilities-service-type))
xe-guest-utilities-service-type
xen-guest-agent-configuration
xen-guest-agent-service-type))
(define (uglify-field-name field-name)
(let ((str (symbol->string field-name)))
@ -1083,6 +1085,36 @@ specified, the QEMU default path is used."))
(default-value (xe-guest-utilities-configuration))
(description "Run the Xen guest management utilities.")))
(define-configuration/no-serialization xen-guest-agent-configuration
(package
(package xen-guest-agent)
"Xen guest agent package."))
(define (generate-xen-guest-agent-documentation)
"Generate documentation for xen-guest-agent-configuration fields"
(generate-documentation
`((xen-guest-agent-configuration ,xen-guest-agent-configuration-fields))
'xen-guest-agent-configuration))
(define (xen-guest-agent-shepherd-service config)
(list
(shepherd-service
(provision '(xen-guest-agent))
(requirement '(networking user-processes udev))
(documentation "Run the Xen guest management agent.")
(start #~(make-forkexec-constructor
(list #$(file-append xen-guest-agent "/bin/xen-guest-agent"))))
(stop #~(make-kill-destructor)))))
(define xen-guest-agent-service-type
(service-type
(name 'xen-guest-agent)
(extensions
(list (service-extension shepherd-root-service-type
xen-guest-agent-shepherd-service)))
(default-value (xen-guest-agent-configuration))
(description "Run the Xen guest management utilities.")))
;;;
;;; Secrets for guest VMs.