[Xen-users] no Disk drive detected when provisioning new vms or after restarting a vm

[mftahy <mofta7y@xxxxxxxxx>]

Hi All
I have xen 4.0 in centos dom0

the machine was working fine for months and yesterday out of sudden I 
can no longer provision new vms and to make things worst If any vm 
shutdown I cannot re run it again .
the vm stop at the process of detecting the (ubuntu and debian all versions)
[!] Detect Disks "No disk drive was detected. If you know the name of 
the driver needed by your disk drive, you can select it from the list"
and when I choose xen-blkfront it doesnt do anything and I get the same 
message back
on centos the message is a bit different that the system cannot create 
/boot partition due to not enough space
I have attached the cfg file for installing the debian one

I tried to see the log exactly at the moment the vm tries to detect hard 
disk driver but nothing is written to the log at the moment
also I have attached the log when I type xm create command as well
here is my cfg for the vm

any help would be really appreciated
I am willing to pay for the help
this is a live server with live clients on it and I need any help here

Thanks
====================
kernel      = '/xenkernels/vmlinuz-debian-squeeze-386'
ramdisk     = '/xenkernels/initrd-debian-squeeze-386.gz'
vcpus       = '1'
memory      = '256'

disk        = [
                  'phy:/dev/xenvms/Jason283-disk,xvda,w',
              ]
name        = 'Jason283'

vif         = [ 'ip=XXXXXX,mac=00:16:3E:ED:CE:2C,vifname=Jason283' ]
on_poweroff = 'destroy'
on_reboot   = 'destroy'
on_crash    = 'destroy'

=============
xm create log
2011-06-28 20:00:37 802] INFO (XMLRPCServer:156) Opening Unix domain 
socket XML-RPC server on /var/run/xend/xmlrpc.sock.
[2011-06-28 20:00:50 802] DEBUG (XendDomainInfo:101) 
XendDomainInfo.create(['vm', ['name', 'Jason283'], ['memory', '512'], 
['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash', 
'restart'], ['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], 
['vcpus', 2], ['cpu_weight', 512], ['oos', 1], ['image', ['linux', 
['kernel', '/xenkernels/vmlinuz-ubuntu-11-64'], ['ramdisk', 
'/xenkernels/initrd-ubuntu-11-64.gz'], ['videoram', 4], ['tsc_mode', 0], 
['nomigrate', 0]]], ['s3_integrity', 1], ['device', ['vbd', ['uname', 
'phy:/dev/xenvms/Jason283-disk'], ['dev', 'xvda'], ['mode', 'w']]], 
['device', ['vif', ['ip', 'XXXXXXXXX'], ['vifname', 'Jason283'], 
['bridge', 'xenbr0']]]])
[2011-06-28 20:00:50 802] DEBUG (XendDomainInfo:2508) 
XendDomainInfo.constructDomain
[2011-06-28 20:00:50 802] DEBUG (balloon:220) Balloon: 15426364 KiB 
free; need 16384; done.
[2011-06-28 20:00:50 802] DEBUG (XendDomain:464) Adding Domain: 844
[2011-06-28 20:00:50 802] DEBUG (XendDomainInfo:2818) 
XendDomainInfo.initDomain: 844 512
[2011-06-28 20:00:50 802] DEBUG (XendDomainInfo:2845) 
_initDomain:shadow_memory=0x0, memory_static_max=0x20000000, 
memory_static_min=0x0.
[2011-06-28 20:00:50 802] INFO (image:182) buildDomain os=linux dom=844 
vcpus=2
[2011-06-28 20:00:50 802] DEBUG (image:721) domid          = 844
[2011-06-28 20:00:50 802] DEBUG (image:722) memsize        = 512
[2011-06-28 20:00:50 802] DEBUG (image:723) image          = 
/xenkernels/vmlinuz-ubuntu-11-64
[2011-06-28 20:00:50 802] DEBUG (image:724) store_evtchn   = 1
[2011-06-28 20:00:50 802] DEBUG (image:725) console_evtchn = 2
[2011-06-28 20:00:50 802] DEBUG (image:726) cmdline        =
[2011-06-28 20:00:50 802] DEBUG (image:727) ramdisk        = 
/xenkernels/initrd-ubuntu-11-64.gz
[2011-06-28 20:00:50 802] DEBUG (image:728) vcpus          = 2
[2011-06-28 20:00:50 802] DEBUG (image:729) features       =
[2011-06-28 20:00:50 802] DEBUG (image:730) flags          = 0
[2011-06-28 20:00:50 802] DEBUG (image:731) superpages     = 0
[2011-06-28 20:00:51 802] INFO (XendDomainInfo:2367) createDevice: vbd : 
{'uuid': 'f0870bfb-3120-2af5-bcd9-5b91f501332a', 'bootable': 1, 
'driver': 'paravirtualised', 'dev': 'xvda', 'uname': 
'phy:/dev/xenvms/Jason283-disk', 'mode': 'w'}
[2011-06-28 20:00:51 802] DEBUG (DevController:95) DevController: 
writing {'virtual-device': '51712', 'device-type': 'disk', 'protocol': 
'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': 
'/local/domain/0/backend/vbd/844/51712'} to 
/local/domain/844/device/vbd/51712.
[2011-06-28 20:00:51 802] DEBUG (DevController:97) DevController: 
writing {'domain': 'Jason283', 'frontend': 
'/local/domain/844/device/vbd/51712', 'uuid': 
'f0870bfb-3120-2af5-bcd9-5b91f501332a', 'bootable': '1', 'dev': 'xvda', 
'state': '1', 'params': '/dev/xenvms/Jason283-disk', 'mode': 'w', 
'online': '1', 'frontend-id': '844', 'type': 'phy'} to 
/local/domain/0/backend/vbd/844/51712.
[2011-06-28 20:00:51 802] INFO (XendDomainInfo:2367) createDevice: vif : 
{'bridge': 'xenbr0', 'ip': 'XXXXXXXXX', 'mac': '00:16:3e:23:d1:8d', 
'uuid': 'c796390c-88c4-4c48-612e-709d332e7071', 'vifname': 'Jason283'}
[2011-06-28 20:00:51 802] DEBUG (DevController:95) DevController: 
writing {'mac': '00:16:3e:23:d1:8d', 'handle': '0', 'protocol': 
'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': 
'/local/domain/0/backend/vif/844/0'} to /local/domain/844/device/vif/0.
[2011-06-28 20:00:51 802] DEBUG (DevController:97) DevController: 
writing {'bridge': 'xenbr0', 'domain': 'Jason283', 'handle': '0', 
'uuid': 'c796390c-88c4-4c48-612e-709d332e7071', 'script': 
'/etc/xen/scripts/vif-bridge', 'ip': 'XXXXXXXXX', 'mac': 
'00:16:3e:23:d1:8d', 'frontend-id': '844', 'state': '1', 'vifname': 
'Jason283', 'online': '1', 'frontend': '/local/domain/844/device/vif/0'} 
to /local/domain/0/backend/vif/844/0.
[2011-06-28 20:00:54 802] DEBUG (XendDomainInfo:3400) Storing VM 
details: {'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': 
'88be1e9e-7b75-58bb-03ce-a0d30d405cc3', 'on_reboot': 'restart', 
'start_time': '1309305654.36', 'on_poweroff': 'destroy', 
'bootloader_args': '', 'on_xend_start': 'ignore', 'on_crash': 'restart', 
'vcpus': '2', 'vcpu_avail': '3', 'bootloader': '', 'image': "(linux 
(kernel /xenkernels/vmlinuz-ubuntu-11-64) (ramdisk 
/xenkernels/initrd-ubuntu-11-64.gz) (superpages 0) (tsc_mode 0) 
(videoram 4) (pci ()) (nomigrate 0) (keymap en-us) (notes (HV_START_LOW 
18446603336221196288) (FEATURES 
'!writable_page_tables|pae_pgdir_above_4gb') (VIRT_BASE 
18446744071562067968) (GUEST_VERSION 2.6) (PADDR_OFFSET 0) (GUEST_OS 
linux) (HYPERCALL_PAGE 18446744071578849280) (LOADER generic) 
(SUSPEND_CANCEL 1) (PAE_MODE yes) (ENTRY 18446744071590302208) 
(XEN_VERSION xen-3.0)))", 'name': 'Jason283'}
[2011-06-28 20:00:54 802] DEBUG (XendDomainInfo:1804) Storing domain 
details: {'console/ring-ref': '5653880', 'image/entry': 
'18446744071590302208', 'console/port': '2', 'store/ring-ref': 
'5653881', 'image/loader': 'generic', 'vm': 
'/vm/88be1e9e-7b75-58bb-03ce-a0d30d405cc3', 
'control/platform-feature-multiprocessor-suspend': '1', 
'image/hv-start-low': '18446603336221196288', 'image/guest-os': 'linux', 
'cpu/1/availability': 'online', 'image/virt-base': 
'18446744071562067968', 'memory/target': '524288', 
'image/guest-version': '2.6', 'image/pae-mode': 'yes', 'description': 
'', 'console/limit': '1048576', 'image/paddr-offset': '0', 
'image/hypercall-page': '18446744071578849280', 'image/suspend-cancel': 
'1', 'cpu/0/availability': 'online', 
'image/features/pae-pgdir-above-4gb': '1', 
'image/features/writable-page-tables': '0', 'console/type': 
'xenconsoled', 'name': 'Jason283', 'domid': '844', 'image/xen-version': 
'xen-3.0', 'store/port': '1'}
[2011-06-28 20:00:55 802] DEBUG (DevController:95) DevController: 
writing {'protocol': 'x86_64-abi', 'state': '1', 'backend-id': '0', 
'backend': '/local/domain/0/backend/console/844/0'} to 
/local/domain/844/device/console/0.
[2011-06-28 20:00:55 802] DEBUG (DevController:97) DevController: 
writing {'domain': 'Jason283', 'frontend': 
'/local/domain/844/device/console/0', 'uuid': 
'579f373f-811d-29f5-9787-9bf0933476ac', 'frontend-id': '844', 'state': 
'1', 'location': '2', 'online': '1', 'protocol': 'vt100'} to 
/local/domain/0/backend/console/844/0.
[2011-06-28 20:00:56 802] DEBUG (XendDomainInfo:1891) 
XendDomainInfo.handleShutdownWatch
[2011-06-28 20:00:56 802] DEBUG (DevController:139) Waiting for devices 
vif2.
[2011-06-28 20:00:56 802] DEBUG (DevController:139) Waiting for devices vif.
[2011-06-28 20:00:56 802] DEBUG (DevController:144) Waiting for 0.
[2011-06-28 20:00:56 802] DEBUG (DevController:628) 
hotplugStatusCallback /local/domain/0/backend/vif/844/0/hotplug-status.
[2011-06-28 20:00:56 802] DEBUG (DevController:642) hotplugStatusCallback 1.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
vscsi.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices vbd.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
ioports.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices irq.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
vkbd.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices vfb.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
console.
[2011-06-28 20:00:57 802] DEBUG (DevController:144) Waiting for 0.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices pci.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
tap2.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices tap.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
vusb.
[2011-06-28 20:00:57 802] DEBUG (DevController:139) Waiting for devices 
vtpm.
[2011-06-28 20:00:57 802] INFO (XendDomain:1206) Domain Jason283 (844) 
unpaused.

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