Hi to everyone ,
I'm trying to build a completely custom xenU kernel ,
because I want to play with it in the xen's sandbox.
Unfortunately I encountered some problems during the creation of the
unprivileged domain with my custom kernel .
I'm using xen-3.0.2.src.tgz package and I followed the following
operation within the xen-3.0.2-2 directory :
# make linux-2.6-xenU-config CONFIGMODE=menuconfig
At this point I made all my customizations and after this I typed :
# make linux-2.6-xenU-build
# make linux-2.6-xenU-install
After a while the unprivileged kernel was ready to use and waiting for
me in
my /boot directory , so I prepared the xen configuration file like this
one :
#
# /etc/xen/testVmNfs
#
name = "testVmNfs"
memory = "128"
kernel="/boot/vmlinuz-2.6.16-xenU"
vif = [ 'mac=00:16:3e:02:76:68' ]
ip= "10.0.0.11"
netmask ="255.255.255.0"
root = "/dev/nfs"
gw="10.0.0.4"
nfs_server="10.0.0.4"
nfs_root="/home/zad/xen/xenFs"
on_reboot = 'restart'
on_crash = 'restart'
Then I started the xen vm with :
# xm create -c testVmNfs
the command didn't produce any output except for this one :
Using config file "/etc/xen/testVmNfs".
Started domain testVmNfs
xenconsole: Could not read tty from store: No such file or directory
so my questions are :
1) Is the procedure that I followed right or did I miss something ?
2) Do I need to enable some special option in the xenU' kernel'
configuration to obtain some kind of output during the unprivileged
domain's boot ?
3) If the info that I'm looking for are just present in some Faqs or
howtos can someone indicate where are they ?
I also include here the log's output maybe it can help everyone that
are coming to have a look at my prob ;) :
[2006-06-20 22:50:46 xend.XendDomainInfo] DEBUG
(XendDomainInfo:177) XendDomainInfo.create(['domain', ['domid', 1],
['uuid', '35a6cde5-64ec-2df5-517c-b5f9d23fc7c7'], ['ssidref', 0],
['vcpus', 1], ['vcpu_avail', 1], ['cpu_weight', 1.0], ['memory', 128],
['maxmem', 128], ['name', 'testVmNfs'], ['on_poweroff', 'destroy'],
['on_reboot', 'restart'], ['on_crash', 'restart'], ['image', ['linux',
['kernel', '/boot/vmlinuz-2.6.16-xenU'], ['ip',
'10.0.0.11:10.0.0.4::255.255.255.0::eth0:off'], ['root', '/dev/nfs'],
['args', 'nfsroot=10.0.0.4:/home/zad/xen/xenFs ']]], ['device', ['vif',
['backend', 0], ['script', 'vif-bridge'], ['mac',
'00:16:3e:02:76:68']]], ['state', '----c-'], ['shutdown_reason',
'crash'], ['cpu_time', 0.0057830360000000001], ['online_vcpus', 1],
['up_time', '2.45281410217'], ['start_time', '1150836643.71'],
['store_mfn', 51040], ['console_mfn', 51039]])
[2006-06-20 22:50:46 xend.XendDomainInfo] DEBUG
(XendDomainInfo:283) parseConfig: config is ['domain', ['domid', 1],
['uuid', '35a6cde5-64ec-2df5-517c-b5f9d23fc7c7'], ['ssidref', 0],
['vcpus', 1], ['vcpu_avail', 1], ['cpu_weight', 1.0], ['memory', 128],
['maxmem', 128], ['name', 'testVmNfs'], ['on_poweroff', 'destroy'],
['on_reboot', 'restart'], ['on_crash', 'restart'], ['image', ['linux',
['kernel', '/boot/vmlinuz-2.6.16-xenU'], ['ip',
'10.0.0.11:10.0.0.4::255.255.255.0::eth0:off'], ['root', '/dev/nfs'],
['args', 'nfsroot=10.0.0.4:/home/zad/xen/xenFs ']]], ['device', ['vif',
['backend', 0], ['script', 'vif-bridge'], ['mac',
'00:16:3e:02:76:68']]], ['state', '----c-'], ['shutdown_reason',
'crash'], ['cpu_time', 0.0057830360000000001], ['online_vcpus', 1],
['up_time', '2.45281410217'], ['start_time', '1150836643.71'],
['store_mfn', 51040], ['console_mfn', 51039]]
[2006-06-20 22:50:46 xend.XendDomainInfo] DEBUG
(XendDomainInfo:379) parseConfig: result is {'ssidref': 0, 'uuid':
'35a6cde5-64ec-2df5-517c-b5f9d23fc7c7', 'on_crash': 'restart',
'on_reboot': 'restart', 'image': ['linux', ['kernel',
'/boot/vmlinuz-2.6.16-xenU'], ['ip',
'10.0.0.11:10.0.0.4::255.255.255.0::eth0:off'], ['root', '/dev/nfs'],
['args', 'nfsroot=10.0.0.4:/home/zad/xen/xenFs ']], 'on_poweroff':
'destroy', 'cpus': None, 'name': 'testVmNfs', 'backend': [], 'vcpus':
1, 'cpu_weight': 1.0, 'vcpu_avail': 1, 'memory': 128, 'device':
[('vif', ['vif', ['backend', 0], ['script', 'vif-bridge'], ['mac',
'00:16:3e:02:76:68']])], 'bootloader': None, 'cpu': None, 'maxmem': 128}
[2006-06-20 22:50:46 xend.XendDomainInfo] DEBUG
(XendDomainInfo:1142) XendDomainInfo.construct: None 0
[2006-06-20 22:50:46 xend.XendDomainInfo] DEBUG
(XendDomainInfo:1174) XendDomainInfo.initDomain: 2 1.0
[2006-06-20 22:50:46 xend] DEBUG (balloon:88) Balloon: free 3;
need 129.
[2006-06-20 22:50:46 xend] DEBUG (balloon:97) Balloon: setting
dom0 target to 274.
[2006-06-20 22:50:46 xend.XendDomainInfo] DEBUG
(XendDomainInfo:923) Setting memory target of domain Domain-0 (0) to
274 MiB.
[2006-06-20 22:50:46 xend] DEBUG (balloon:84) Balloon: free
133; need 129; done.
[2006-06-20 22:50:46 xend] INFO (image:135) buildDomain
os=linux dom=2 vcpus=1
[2006-06-20 22:50:46 xend] DEBUG (image:173) dom = 2
[2006-06-20 22:50:46 xend] DEBUG (image:174) image =
/boot/vmlinuz-2.6.16-xenU
[2006-06-20 22:50:46 xend] DEBUG (image:175) store_evtchn = 1
[2006-06-20 22:50:46 xend] DEBUG (image:176) console_evtchn = 2
[2006-06-20 22:50:46 xend] DEBUG (image:177) cmdline =
ip=10.0.0.11:10.0.0.4::255.255.255.0::eth0:off root=/dev/nfs
nfsroot=10.0.0.4:/home/zad/xen/xenFs
[2006-06-20 22:50:46 xend] DEBUG (image:178) ramdisk =
[2006-06-20 22:50:46 xend] DEBUG (image:179) vcpus = 1
[2006-06-20 22:50:46 xend] DEBUG (image:180) features =
[2006-06-20 22:50:50 xend] DEBUG (DevController:103)
DevController: writing {'backend-id': '0', 'mac': '00:16:3e:02:76:68',
'handle': '0', 'state': '1', 'backend':
'/local/domain/0/backend/vif/2/0'} to /local/domain/2/device/vif/0.
[2006-06-20 22:50:50 xend] DEBUG (DevController:105)
DevController: writing {'mac': '00:16:3e:02:76:68', 'state': '1',
'handle': '0', 'script': '/etc/xen/scripts/vif-bridge', 'frontend-id':
'2', 'domain': 'testVmNfs', 'frontend': '/local/domain/2/device/vif/0'}
to /local/domain/0/backend/vif/2/0.
[2006-06-20 22:50:50 xend.XendDomainInfo] DEBUG
(XendDomainInfo:667) Storing VM details: {'ssidref': '0', 'uuid':
'35a6cde5-64ec-2df5-517c-b5f9d23fc7c7', 'on_reboot': 'restart',
'start_time': '1150836650.74', 'on_poweroff': 'destroy', 'name':
'testVmNfs', 'vcpus': '1', 'vcpu_avail': '1', 'memory': '128',
'on_crash': 'restart', 'image': "(linux (kernel
/boot/vmlinuz-2.6.16-xenU) (ip
10.0.0.11:10.0.0.4::255.255.255.0::eth0:off) (root /dev/nfs) (args
'nfsroot=10.0.0.4:/home/zad/xen/xenFs '))", 'maxmem': '128'}
[2006-06-20 22:50:50 xend.XendDomainInfo] DEBUG
(XendDomainInfo:692) Storing domain details: {'console/ring-ref':
'15238', 'console/port': '2', 'name': 'testVmNfs', 'console/limit':
'1048576', 'vm': '/vm/35a6cde5-64ec-2df5-517c-b5f9d23fc7c7', 'domid':
'2', 'cpu/0/availability': 'online', 'memory/target': '131072',
'store/ring-ref': '15715', 'store/port': '1'}
[2006-06-20 22:50:50 xend.XendDomainInfo] WARNING
(XendDomainInfo:813) Domain has crashed: name=testVmNfs id=2.
[2006-06-20 22:50:51 xend.XendDomainInfo] ERROR
(XendDomainInfo:1430) VM testVmNfs restarting too fast (4.902062
seconds since the last restart). Refusing to restart to avoid loops.
[2006-06-20 22:50:51 xend.XendDomainInfo] DEBUG
(XendDomainInfo:1290) XendDomainInfo.destroy: domid=2
[2006-06-20 22:50:51 xend.XendDomainInfo] DEBUG
(XendDomainInfo:1298) XendDomainInfo.destroyDomain(2)
Thanks to Everyone
Zad
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