I did some more debugging and based on some of the instructions on http://wiki.xen.org/xenwiki/XenParavirtOps I found out that I may have been missing the "gntdev" module.
I rebuilt the kernel and added that in (part of the kernel rather than as a separate module), but still have the same issues. Adding some more debugging information:
root@nor:/home/yuvraj# cat /proc/misc
54 network_throughput
55 network_latency
56 cpu_dma_latency
57 device-mapper
221 mpt2ctl
144 nvram
228 hpet
58 blktap-control
59 gntdev
60 evtchn
61 autofs
231 snapshot
184 microcode
227 mcelog
62 rfkill
63 vga_arbiter
root@nor:/home/yuvraj# ll /dev/xen/
total 0
drwxr-xr-x 2 root root 80 2011-02-08 22:07 ./
drwxr-xr-x 17 root root 6120 2011-02-08 22:07 ../
crw-r----- 1 root root 10, 63 2011-02-08 22:07 eventchn
crw-rw---- 1 root root 10, 60 2011-02-08 22:07 evtchn
root@nor:/home/yuvraj#
Seems like I am missing the /dev/xen/gntdev entries? Shouldn’t these be created automatically?
Thanks
Yuvraj
-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Yuvraj Agarwal
Sent: Tuesday, February 08, 2011 9:02 AM
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] XEN 4.0.2-rc2 - using OCAML xenstored -- xend not starting?
Hi All,
I just tried a new installation of Ubuntu 10.04 (64bit) + Xen and am having some trouble starting XEN. I am using the latest mercurial checkout
(4.0.2-rc2) and the only change I made was to Config.mk to enable building the OCAML version of xenstored. " CONFIG_OCAML_XENSTORED ?= y". I am using the same kernel I built earlier for a similar Ubuntu 10.04-64bit / Xen
4.0.0 installation (version 2.6.32.12). I would like to use the OCAML version of xenstored since it is supposed to be much better/faster when starting up a larger number of domUs.
The system starts up, and I can see xend started up, but when I do "xm list" or "xm info" I get an error message that xend has not started up?
root@EM:/etc# xm list
Error: Unable to connect to xend: No such file or directory. Is xend running?
root@EM:/etc#
root@EM:/etc# ps -efw | grep xen
root 88 2 0 Feb07 ? 00:00:00 [xenwatch]
root 89 2 0 Feb07 ? 00:00:00 [xenbus]
root 6254 1 0 Feb07 ? 00:00:00 /usr/bin/python
/usr/sbin/xend start
root 6255 6254 0 Feb07 ? 00:00:17 /usr/bin/python
/usr/sbin/xend start
root 7043 5919 0 08:55 pts/2 00:00:00 grep --color=auto xen
root@EM:/etc#
root@EM:/etc# uname -a
Linux EM 2.6.32.12 #11 SMP Fri Jun 18 20:52:17 PDT 2010 x86_64 GNU/Linux root@EM:/etc#
I did check and found two difference with my earlier installation of Xen
4.0.0 with the same kernel (although with the standard xenstored).
1. The xen 4.0 installation does show a "xenstored" process also running in addition to these ones.
2. "xend" seems to be looking for a directory, " /var/lib/xenstored" that doesn't seem to exist on my system?
Any pointers to fix this issue?
Thanks!
Yuvraj
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