It's actually trivial stuff for everyone, who know xapi - dom0 is almost same as any other domain.

And normal use path do not assume usage of dom0 as desktop (xapi is pure server environment and I can't say which kind of problems you will met).

28.09.2012 11:38, Lyn Amery пишет:

Thanks, the "xe vm-memory-target-set" worked. A bit clunky, but at least I can finally move on from here. Perhaps a less manual solution will present down the track.


------------------------------------------------------------------------
*From: *"George Shuklin" <[email protected]>
*To: *"Lyn Amery" <[email protected]>
*Cc: *[email protected]
*Sent: *Friday, 28 September, 2012 2:39:31 PM
*Subject: *Re: [Xen-API] xcp and minimum memory

I forgot mention - reboot after changes.

If you want more memory to dom0, you can change it via xe vm-memory-target-set for Control Domain for your host (you can get dom uuid from xe vm-list with 'control domain' in name-label).


28.09.2012 10:35, Lyn Amery пишет:


    Thanks for your assistance.  Tried it, but still makes no difference.

    ------------------------------------------------------------------------
    *From: *"George Shuklin" <[email protected]>
    *To: *[email protected]
    *Sent: *Friday, 28 September, 2012 2:00:21 PM
    *Subject: *Re: [Xen-API] xcp and minimum memory

    1) don't use xend (or it configs). xapi or xend, not both.
    2) Proper setting is

    /etc/default/grub
    # Start dom0 with less RAM
    GRUB_CMDLINE_XEN_DEFAULT="dom0_mem=1024M"

    and do update-grub after changing default.

    28.09.2012 09:40, Lyn Amery пишет:

        Hi,

        I've installed xcp (xcp-xapi) on Ubuntu 12.04 - installed, but
        have gotten no further.  What's stopped me dead in my tracks
        is that Xen appears to grab most of my 6GB of memory - well,
        *something does* - leaving only 1GB for me to run my desktop
        on.  Very slow and painful to use.  (It would be ideal to run
        this on a test server, but nothing is available.)

        First, do I understand correctly that "dom0" is just the host
        system?  In other words, when I boot the Xen kernel, that's
        dom0, yes?

        Here's what I've tried up to this point.

        Edited /etc/default/grub

        GRUB_CMDLINE_XEN="dom0_mem=2G,max:2G"

        also tried

        GRUB_CMDLINE_XEN="dom0_mem=512M,max:512M"


        ... followed by update-grub command.


        Edited /etc/xen/xend-config.sxp

        --------------------------------------

        xend-config.sxp:(dom0-min-mem 2048)

        (enable-dom0-ballooning no)


        All mods followed by reboots, of course.  None seems to make
        any difference. The performance monitor application and "free"
        command show just under 1GB available when booted under the
        Xen kernel, 6BG when booted under normal Ubuntu.

        Xen reports the proper memory stats:

        # xe host-list params=all | grep memory

          memory-overhead ( RO): 83017728

          memory-total ( RO): 6372888576

          memory-free ( RO): 5120520192

          memory-free-computed ( RO): <expensive field>


        Have I missed some basic concept somewhere?  Anyone have
        similar problems?


        Cheers,

        Lyn


-- /---------------------
        Lyn Amery
        Gaia Resources
        p +61 8 9227 7309
        w www.gaiaresources.com.au
        e [email protected]/



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-- /---------------------
    Lyn Amery
    Gaia Resources
    p +61 8 9227 7309
    w www.gaiaresources.com.au
    e [email protected]/




--
/---------------------
Lyn Amery
Gaia Resources
p +61 8 9227 7309
w www.gaiaresources.com.au
e [email protected]/


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