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Re: [libvirt] [PATCH v3 1/9] lib: add virDomainGetGuestInfo()



On Fri, Aug 23, 2019 at 11:31:15AM -0500, Jonathon Jongsma wrote:
> This API is intended to aggregate several guest agent information
> queries and is ispired by stats API virDomainListGetStats(). It is
> anticipated that this information will be provided by a guest agent
> running within the domain.
> 
> Signed-off-by: Jonathon Jongsma <jjongsma redhat com>
> ---
>  include/libvirt/libvirt-domain.h |  14 ++++
>  src/driver-hypervisor.h          |   8 +++
>  src/libvirt-domain.c             | 117 +++++++++++++++++++++++++++++++
>  src/libvirt_public.syms          |   1 +
>  4 files changed, 140 insertions(+)
> 

> +/**
> + * virDomainGetGuestInfo:
> + * @domain: pointer to domain object
> + * @types: types of information to return, binary-OR of virDomainGuestInfoTypes
> + * @params: location to store the guest info parameters
> + * @nparams: number of items in @params
> + * @flags: currently unused, set to 0
> + *
> + * Queries the guest agent for the various information about the guest system.
> + * The reported data depends on the guest agent implementation. the information
> + * is returned as an array of typed parameters containing the individual
> + * parameters. The parameter name for each information field consists of a
> + * dot-separated strign containing the name of the requested group followed by
> + * a group-specific description of the statistic value.
> + *
> + * The information groups are enabled using the @types parameter which is a
> + * binary-OR of enum virDomainGuestInfoTypes. The following groups are available
> + * (although not necessarily implemented for each hypervisor):
> + *
> + * VIR_DOMAIN_GUEST_INFO_USERS:
> + *  returns information about users that are currently logged in within the
> + *  guest domain. The typed parameter keys are in this format:
> + *
> + *      "user.count" - the number of active users on this domain as an
> + *                     unsigned int
> + *      "user.<num>.name - username of the user as a string
> + *      "user.<num>.domain - domain of the user as a string (may only be
> + *                           present on certain guest types)
> + *      "user.<num>.login-time - the login time of a user in milliseconds
> + *                               since the epoch as unsigned long long
> + *
> + * VIR_DOMAIN_GUEST_INFO_OS:
> + *  Return information about the operating system running within the guest. The
> + *  typed parameter keys are in this format:
> + *
> + *      "os.id" - a string identifying the operating system
> + *      "os.name" - the name of the operating system, suitable for presentation
> + *                  to a user, as a string
> + *      "os.pretty-name" - a pretty name for the operating system, suitable for
> + *                         presentation to a user, as a string
> + *      "os.version" - the version of the operating system suitable for
> + *                     presentation to a user, as a string
> + *      "os.version-id" - the version id of the operating system suitable for
> + *                        processing by scripts, as a string
> + *      "os.kernel-release" - the release of the operating system kernel, as a
> + *                            string
> + *      "os.kernel-version" - the version of the operating system kernel, as a
> + *                            string
> + *      "os.machine" - the machine hardware name as a string
> + *      "os.variant" - a specific variant or edition of the operating system
> + *                     suitable for presentation to a user, as a string
> + *      "os.variant-id" - the id for a specific variant or edition of the
> + *                        operating system, as a string
> + *
> + * VIR_DOMAIN_GUEST_INFO_TIMEZONE:
> + *  Returns information about the timezone within the domain. The typed
> + *  parameter keys are in this format:
> + *
> + *      "timezone.name" - the name of the timezone as a string
> + *      "timezone.offset" - the offset to UTC in seconds as an int
> + *
> + * VIR_DOMAIN_GUEST_INFO_FILESYSTEM:
> + *  Returns inforamtion about the filesystems within the domain.  The typed
> + *  parameter keys are in this format:
> + *      "fs.count" - the number of filesystems defined on this domain
> + *                   as an unsigned int
> + *      "fs.<num>.mountpoint" - the path to the mount point for the filesystem
> + *      "fs.<num>.name" - device name in the guest (e.g. "sda1")
> + *      "fs.<num>.fstype" - the type of filesystem
> + *      "fs.<num>.total-bytes" - the total size of the filesystem
> + *      "fs.<num>.used-bytes" - the number of bytes used in the filesystem
> + *      "fs.<num>.disk.count" - the number of disks targeted by this filesystem
> + *      "fs.<num>.disk.<num>.alias" - the device alias of the disk (e.g. sda)
> + *      "fs.<num>.disk.<num>.serial" - the serial number of the disk
> + *      "fs.<num>.disk.<num>.device" - the device node of the disk

This hasn't documented VIR_DOMAIN_GUEST_INFO_HOSTNAME at all


Regards,
Daniel
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