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[Xen-API] Re xc_introduce_domain query

  • To: xen-api@xxxxxxxxxxxxxxxxxxx
  • From: Asutosh Das <das.asutosh@xxxxxxxxx>
  • Date: Tue, 26 May 2009 16:27:22 +0530
  • Delivery-date: Tue, 26 May 2009 03:57:30 -0700
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  • List-id: Discussion of API issues surrounding Xen <xen-api.lists.xensource.com>

I am trying to boot a guest domain linux 2.6.18 as guest on xen. I have written an application that would does whatever xend does to boot the domain. I introduced the domain (xc_introduce_domain) API and then I am trying to write the device details to xenstore. But I get an error of "Illegal seek" and the stuff that I want to write doesn't get reflected in xenstore. However, if I run the same xs_write command without the xs_introduce_domain(), I get a success and it reflects on Xenstore.
After a bit of digging, I realized that I am able to write to xenstore domain-path except for the domain-id that the guest-domain is booting. i.e. if the domain-path is /local/domain/1 , I am able to write to /local/domain/<n>, where n != 1.

Please can you help me know, if there is any relation between xs_introduce_domain and xs_write.

Xend writes the device details (e.g vbd) in a loop(xend/server/DevController.py,  createDevices). I didn't quite understand why its doing that way.
Thank you,
Warm Regards,
Asutosh Das
# (+91) 9818 4494 69

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