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Re: [Xen-devel] xenstore documentation



Nivedita Singhvi wrote:

Anthony Liguori wrote:

Jacob Gorm Hansen wrote:


1) Create domain
   domid = 0
   xc_domain_create(&domid)
   xc_domain_maxmem(domid, memory >> 10);
   xc_domain_memory_increase_reservation(domid, memory >> 12);


Hi Anthony,

Sounds like you're the right person to get the interface
documentation written? :). Would be very helpful.

Doh!  Seriously though, I'm more than happy to once 3.0 ships.

Regards,

Anthony Liguori

thanks,
Nivedita


2) Build domain
   lconsole = rconsole = 0;
   xc_evtchn_bind_interdomain(0, domid, &lconsole, &rconsole);
   lstore = rstore = 0;
   xc_evtchn_bind_interdomain(0, domid, &lconsole, &rconsole);

xc_linux_build(domid, kernel, ramdisk, cmdline, 0, vcpus, rstore, &mfn_store, rconsole, &mfn_console)
   home = "/tools/<yourtool>/domain/%d" % domid
   xs_domain_introduce(domid, mfn_store, lstore, home);
   xs_write(home + "/console/ring-ref", mfn_console)
   xs_write(home + "/console/port", lconsole)

3) Create block device (pdev, vdev)
   static int uuid;

   dom0_home = xs_get_domain_path(0)

   backend = dom0_home + "/backend/vbd/%s/%s' % (uuid, domid)
   frontend = home + "/device/vbd/%s' % uuid

   transaction_start()
   xs_write(backend + "/frontend", frontend);
   xs_write(backend + "/frontend-id", domid);
   transaction_end()

   transaction_start()
   xs_write(frontend + "/backend", backend);
   xs_write(frontend + "/backend-id", 0);
   xs_write(frontend + "/virtual-device", vdev)
   transaction_end()

   xs_write(backend + "/physical-device", pdev)

This might seem complicated, but compared to what you had to do under 2.0.x, it's a 1000x times easier.

Regards,

Anthony Liguori

Jacob

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