From 3bd8c779f487f7f592207ab05f815d4f85b6920b Mon Sep 17 00:00:00 2001 From: Erik Skultety Date: Fri, 12 Mar 2021 08:34:15 +0100 Subject: [PATCH] docs: html.in: Drop the architecture page The page isn't linked from anywhere and the contents is dated. Images related to the page are also dropped. Signed-off-by: Erik Skultety Reviewed-by: Pavel Hrdina --- docs/architecture.gif | Bin 5571 -> 0 bytes docs/architecture.html.in | 82 ------------- docs/architecture.svg | 239 -------------------------------------- docs/meson.build | 2 - 4 files changed, 323 deletions(-) delete mode 100644 docs/architecture.gif delete mode 100644 docs/architecture.html.in delete mode 100644 docs/architecture.svg diff --git a/docs/architecture.gif b/docs/architecture.gif deleted file mode 100644 index 9b820eef1878da18981e133d23c645a88df35dd6..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 5571 zcmV;!6+G%kNk%w1VL<|t0e}Di0002y=H?;!1OWg50RSuj0000%0+Im$0{)DTsmtvT zqnxzbi?iOm`wxcVNR|`;nCi;5?hD8AOxN~}=lag~{tpZahs2`sh)gP%%%<}RjY_A~ zs`ZM^YPa03_X`e-$KG%A;{|^`_I7nD%c!;>ylE~QT z_y`#pSRz?zd5QT*nSv+7x!LI{f)X0@336Kcl8UM-`oZeD61zbwYhqh_3zJ*XyBqR* z0?a!~yxJjr?4cadysR4x&GOt(J$-S_ppES--Hpq^4K6XBU{3ykuCSiIE$%+j9xxw| zP;Y>5PY=Hj%k1x8tANS+5sYT=U6|=XiW;y 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zdG971?uRZ*!!FU)C7`Ux?xN>lx#y@4-t4;l%`WYqI!xBuebey%-tq3-v+0mzoj|;z z9|Ah@6hFe)-0)3y@KL;#eB8zE3GyMo;Un+yKK9j6?4PN<@)u?-=Z@?&uad(mA3G2B z+cnSfK)>w^FZ57O^hICinU3_DuJlWf;79ND#Gc_%PvlKc^#Bg_S1;;Tul4wy^<59? zTo3m0{qJG+j}Q4?pZJqs)sk=dWN)!x&iS41`JWH^te*L!Px_^A R`lpZjsjvD=fC2>o06Q2Wc~SrX diff --git a/docs/architecture.html.in b/docs/architecture.html.in deleted file mode 100644 index 7a5cf2dca8..0000000000 --- a/docs/architecture.html.in +++ /dev/null @@ -1,82 +0,0 @@ - - - - -

libvirt architecture

- -

- Currently libvirt supports 2 kind of virtualization, and its - internal structure is based on a driver model which simplifies - adding new - engines: -

- -
    - -

    Xen support

    - -

    When running in a Xen environment, programs using libvirt have to execute -in "Domain 0", which is the primary Linux OS loaded on the machine. That OS -kernel provides most if not all of the actual drivers used by the set of -domains. It also runs the Xen Store, a database of information shared by the -hypervisor, the backend drivers, any running domains, and libxl (aka libxenlight). -libxl provides a set of APIs for creating and managing domains, which can be used -by applications such as the xl tool provided by Xen or libvirt. The hypervisor, -drivers, kernels and daemons communicate though a shared system bus -implemented in the hypervisor. The figure below tries to provide a view of -this environment:

    - The Xen architecture -

    The library will interact with libxl for all management operations -on a Xen system.

    -

    Note that the libvirt libxl driver only supports root access.

    - -

    QEMU and KVM support

    - -

    The model for QEMU and KVM is completely similar, basically KVM is based -on QEMU for the process controlling a new domain, only small details differs -between the two. In both case the libvirt API is provided by a controlling -process forked by libvirt in the background and which launch and control the -QEMU or KVM process. That program called libvirt_qemud talks though a specific -protocol to the library, and connects to the console of the QEMU process in -order to control and report on its status. Libvirt tries to expose all the -emulations models of QEMU, the selection is done when creating the new -domain, by specifying the architecture and machine type targeted.

    -

    The code controlling the QEMU process is available in the -qemud/ directory.

    - -

    Driver based architecture

    - -

    As the previous section explains, libvirt can communicate using different -channels with the current hypervisor, and should also be able to use -different kind of hypervisor. To simplify the internal design, code, ease -maintenance and simplify the support of other virtualization engine the -internals have been structured as one core component, the libvirt.c module -acting as a front-end for the library API and a set of hypervisor drivers -defining a common set of routines. That way the Xen Daemon access, the Xen -Store one, the Hypervisor hypercall are all isolated in separate C modules -implementing at least a subset of the common operations defined by the -drivers present in driver.h:

    -
      -
    • xend_internal: implements the driver functions though the Xen - Daemon
      • -
    • xs_internal: implements the subset of the driver available though the - Xen Store
      • -
    • xen_internal: provide the implementation of the functions possible via - direct hypervisor access
      • -
    • proxy_internal: provide read-only Xen access via a proxy, the proxy code - is in the proxy/ directory.
      • -
    • xm_internal: provide support for Xen defined but not running - domains.
      • -
    • qemu_internal: implement the driver functions for QEMU and - KVM virtualization engines. It also uses a qemud/ specific daemon - which interacts with the QEMU process to implement libvirt API.
      • -
    • test: this is a test driver useful for regression tests of the - front-end part of libvirt.
      • -
    -

    Note that a given driver may only implement a subset of those functions, -(for example saving a Xen domain state to disk and restoring it is only -possible though the Xen Daemon), in that case the driver entry points for -unsupported functions are initialized to NULL.

    -

    - - diff --git a/docs/architecture.svg b/docs/architecture.svg deleted file mode 100644 index 1e1555156b..0000000000 --- a/docs/architecture.svg +++ /dev/null @@ -1,239 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -XenBus - -drivers - -XenStore - -Kernel0 - -KernelU - -KernelU - -Xen Hypervisor - -Xend - -Dom0 - -DomU - -DomU - -Hardware - - diff --git a/docs/meson.build b/docs/meson.build index d2e685f673..ab0932ceb4 100644 --- a/docs/meson.build +++ b/docs/meson.build @@ -7,7 +7,6 @@ docs_assets = [ 'android-chrome-192x192.png', 'android-chrome-256x256.png', 'apple-touch-icon.png', - 'architecture.gif', 'browserconfig.xml', 'favicon.ico', 'favicon-16x16.png', @@ -32,7 +31,6 @@ docs_assets = [ docs_html_in_files = [ '404', - 'architecture', 'bugs', 'cgroups', 'contact',