From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Failure to start xend in Xen 3.4.1 Dom0 ( 2.6.31 pvops) on top Ubuntu 9.10 Server
To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Date: Saturday, September 12, 2009, 12:38 PM

dmesg log for 2.6.31-rc6 is attached.
Xen-bus activation entries are present in the log.

--- On Sat, 9/12/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Failure to start xend in Xen 3.4.1 Dom0 ( 2.6.31 pvops) on top Ubuntu 9.10 Server
To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Date: Saturday, September 12, 2009, 11:55 AM

One more notice.

Jeremy's 2.6.31-rc6 kernel just several times caused xend failure to start.
Actually, 2.6.31-rc6 hadn't problems with supporting Dom0 on top of Ubuntu 9.10 , i.e. xend started almost every time.
2.6.29.6 & 2.6.30.2 xenified kernels also don't have any problems with
xend startup after loading Dom0.
It seems to me as issue dependent on kernel supporting Dom0, first time raised up for 2.6.31-rc9.
On the other hand 2.6.31 works fine under Xen 3.4.1 on top of Ubuntu 9.04 Server.

Xen port to Ubuntu is done every time via tuning Config.mk to place xen folder under /usr/local/lib/phyton2.6/dist-packages.

Boris.

--- On Sat, 9/12/09, Boris Derzhavets <bderzhavets@xxxxxxxxx> wrote:

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: [Xen-devel] Failure to start xend in Xen 3.4.1 Dom0 ( 2.6.31 pvops) on top Ubuntu 9.10 Server
To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>
Date: Saturday, September 12, 2009, 10:13 AM

Suggestion below has been used to load Dom0 via grub entry:

menuentry "Xen 3.4 / Ubuntu 9.10 kernel 2.6.31" {
insmod ext2
set root=(hd0,13)
multiboot (hd0,13)/xen-3.4.gz
module (hd0,13)/vmlinuz-2.6.31
module (hd0,13)/initrd-2.6.31.img
}

Dom0 was loaded OK.
However, /etc/init.d/xend start generates xend.log :-

[2009年09月12日 17:57:48 3372] INFO (SrvDaemon:336) Xend changeset: unavailable.
[2009年09月12日 17:57:49 3372] ERROR (SrvDaemon:349) Exception starting xend ((111, 'Connection refused'))
Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvDaemon.py", line 341, in run
servers = SrvServer.create()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvServer.py", line 251, in create
root.putChild('xend', SrvRoot())
File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvRoot.py", line 40, in __init__
self..get(name)
File "/usr/local/lib/python2.6/dist-packages/xen/web/SrvDir.py", line 84, in get
val = val..getobj()
File "/usr/local/lib/python2.6/dist-packages/xen/web/SrvDir.py", line 52, in getobj
self.obj = klassobj()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvNode.py", line 30, in __init__
self.xn = XendNode.instance()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode..py", line 949, in instance
inst.save()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 484, in save
self.save_networks()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py", line 499, in save_networks
for network_uuid in XendNetwork.get_all()])
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendBase.py", line 102, in get_record
for key in keys])
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNetwork.py", line 196, in get_VIFs
vms = XendDomain.instance().get_all_vms()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomain.py", line 1736, in instance
inst.init()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomain.py", line 113, in init
xstransact.Mkdir(XS_VMROOT)
File "/usr/local/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 355, in Mkdir
complete(path, lambda t: t.mkdir(*args))
File "/usr/local/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 361, in complete
t = xstransact(path)
File "/usr/local/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 29, in __init__
self.transaction = xshandle().transaction_start()
File "/usr/local/lib/python2.6/dist-packages/xen/xend/xenstore/xsutil.py", line 18, in xshandle
xs_handle = xen.lowlevel.xs.xs()
Error: (111, 'Connection refused')
[2009年09月12日 17:57:49 3371] INFO (SrvDaemon:220) Xend exited with status 1.

Boris.


--- On Fri, 9/11/09, Keir Fraser <keir.fraser@xxxxxxxxxxxxxx> wrote:

From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] How to build xen.gz with static built-in command line dom0_mem=1024M ?
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Friday, September 11, 2009, 7:30 AM

There is no supported way, as we expect to have a sane bootloader that can
parse boot args. If youw ant to hack it in, edit the line 'cmdline =
cmdline_cook(...' in arch/x86/setup.c to read 'cmdline = "my args go here";'
instead.

-- Keir

On 11/09/2009 10:00, "Boris Derzhavets" <bderzhavets@xxxxxxxxx> wrote:

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