Xen 4.2 TODO

Xen 4.2 TODO

[Ian Campbell]

Plan for a 4.2 release:
http://lists.xen.org/archives/html/xen-devel/2012-03/msg00793.html

The time line is as follows:

19 March        -- TODO list locked down
2 April         -- Feature Freeze
                                                << WE ARE HERE
When It's Ready -- First release candidate
Weekly          -- RCN+1 until release

The updated TODO list follows.

If you are aware of any bugs which must/should be fixed for 4.2 then
please reply to this thread (otherwise I may not remember to pick them
up next week)

A very strong case will now have to be made as to why new items should
be added to the list, especially as a blocker, rather than deferred to
4.3.

hypervisor, blockers:

    * [BUG] stub domains broken. HVM_PARAM_DM_DOMAIN needs to reset
      HVM_PARAM_BUFIOREQ_EVTCHN (Anthony Perard, DONE)

    * [BUG] EFI binaries installed to /efi instead of under /usr/lib
      after LIB_DIR definition moved to configure script. (Matt
      Wilson, patch posted, under discussion)

tools, blockers:

    * libxl stable API -- we would like 4.2 to define a stable API
      which downstream's can start to rely on not changing. Aspects of
      this are:

        * Interfaces which may need to be async:

            * libxl_device_{disk,nic,vkb,add,pci}_add (and
              remove). (Roger Pau Monné, all except pci included in
              calling hotplug scripts from xl)

        * LIBXL_NIC_TYPE enum names are confusing. (Roger, included in
          calling hotplug scripts series)

    * xl compatibility with xm:

        * [BUG] cannot create an empty CD-ROM drive on HVM guest,
          reported by Fabio Fantoni in <4F9672DD.2080902@tiscali.it>
          (Ian C, has a half baked patch) 

        * does not automatically try to select a (set of) node(s) on
          which to create a VM and pin its vcpus there. (Dario
          Faggioli, first half applied, second half reposted)

    * [CHECK] More formally deprecate xm/xend. Manpage patches already
      in tree. Needs release noting and communication around -rc1 to
      remind people to test xl.

    * calling hotplug scripts from xl (Linux and NetBSD) (Roger Pau
      Monné, v9 posted, review on going)

    * Block script support -- follows on from hotplug script (Roger
      Pau Monné, "just be a matter of removing an "if"")

    * [CHECK] Confirm that migration from Xen 4.1 -> 4.2 works.

    * [BUG] LIBLEAFDIR et al and libfsimage do the wrong thing on
      modern Debian/Ubuntu w/ multiarch capabilities (Matt Wilson,
      DONE)

    * libxl to reject attempts to migrate a domain using upstream
      qemu, due to lack of log dirty support (Ian C, patch sent,
      awaiting review)

    * [BUG] parameter 'maxvcpus' causes hvm guest boots up with wrong
      vcpu number http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1825
      (<E4558C0C96688748837EB1B05BEED75A0FD5574A@SHSMSX102.ccr.corp.intel.com>)

hypervisor, nice to have:

    * vMCE save/restore changes, to simplify migration 4.2->4.3 with
     new vMCE in 4.3. (Jinsong Liu, Jan Beulich)

tools, nice to have:

    * xl compatibility with xm:

        * Accept "xl cr /dev/null param=value" to provide all config
          on the command line (W. Michael Petullo, DONE)

    * libxl stable API

        * libxl_wait_for_free_memory/libxl_wait_for_memory_target.
          Interface needs an overhaul, related to
          locking/serialization over domain create. IanJ to add note
          about this interface being substandard but otherwise defer
          to 4.3.

        * Interfaces which may need to be async:

            * libxl_cdrom_insert. Should be easy once
              disk_{add,remove} done. This is basically a helper
              function and its functionality can be implemented in
              terms of the libxl_disk_* interfaces. If this is not
              done in time we should document as a substandard
              interface which is subject to change post 4.2.

	      (IanC: this function just looks to be broken to me... I
	      have a half baked fixup patch)

    * xl.cfg(5) documentation patch for qemu-upstream
      videoram/videomem support:
      http://lists.xen.org/archives/html/xen-devel/2012-05/msg00250.html
      qemu-upstream doesn't support specifying videomem size for the
      HVM guest cirrus/stdvga.  (but this works with
      qemu-xen-traditional). (Pasi Kärkkäinen)

    * [BUG] long stop during the guest boot process with qcow image,
      reported by Intel: http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1821

    * [BUG] vcpu-set doesn't take effect on guest, reported by Intel:
      http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1822

    * Load blktap driver from xencommons initscript if available, thread at:
      <db614e92faf743e20b3f.1337096977@kodo2>. To be fixed more
      properly in 4.3. (Patch posted, discussion, plan to take simple
      xencommons patch for 4.2 and revist for 4.3)

    * [BUG] xl allows same PCI device to be assigned to multiple
      guests. http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1826
      (<E4558C0C96688748837EB1B05BEED75A0FD5574A@SHSMSX102.ccr.corp.intel.com>)



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Re: Xen 4.2 TODO

[Jan Beulich]

>>> On 23.07.12 at 12:44, Ian Campbell <Ian.Campbell@citrix.com> wrote:
>     * [BUG] EFI binaries installed to /efi instead of under /usr/lib
>       after LIB_DIR definition moved to configure script. (Matt
>       Wilson, patch posted, under discussion)

Patch committed.

Jan

Re: Xen 4.2 TODO

[Dario Faggioli]

[-- Attachment #1.1: Type: text/plain, Size: 1273 bytes --]

On Mon, 2012-07-23 at 11:44 +0100, Ian Campbell wrote:
> Plan for a 4.2 release:
> http://lists.xen.org/archives/html/xen-devel/2012-03/msg00793.html
> 
> The time line is as follows:
> 
> 19 March        -- TODO list locked down
> 2 April         -- Feature Freeze
>                                                 << WE ARE HERE
> When It's Ready -- First release candidate
> Weekly          -- RCN+1 until release
> 
> The updated TODO list follows.
>
> ...
>
> tools, blockers:
>
> ...
>
>     * xl compatibility with xm:
> 
>         * [BUG] cannot create an empty CD-ROM drive on HVM guest,
>           reported by Fabio Fantoni in <4F9672DD.2080902@tiscali.it>
>           (Ian C, has a half baked patch) 
> 
>         * does not automatically try to select a (set of) node(s) on
>           which to create a VM and pin its vcpus there. (Dario
>           Faggioli, first half applied, second half reposted)
>
> and re-reposted. :-)

Thanks and Regards,
Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


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