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[Xen-users] XM save hanging when saving VM in pause state

  • To: <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Castillo, Claris" <claris.castillo@xxxxxxxxx>
  • Date: Fri, 14 Jul 2006 10:51:17 -0700
  • Delivery-date: Fri, 14 Jul 2006 11:00:02 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcanbhtuDWR+XVyTSHGRxZIS8oaJlg==
  • Thread-topic: XM save hanging when saving VM in pause state

Hi,

I apologize for sending a second email on the same issue but I have been looking and looking at

different lists for a hint that point me in some direction.

I am stuck on this and have no idea of how to fix it. Unfortunately the error messages in the log file are not self-explained so I can’t really figure it out myself.

 

I am trying to save (xm save) a virtual machine which is in pause state (xm pause) and xen seems to hang.

Below step by step what is happening

 

[root@overlay2 ~]# xm list

Name                              ID Mem(MiB) VCPUs State  Time(s)

Domain-0                           0     3418     4 r-----    22.6

[root@overlay2 ~]# clear

 

[root@overlay2 ~]# xm create /etc/xen/suse1

Using config file "/etc/xen/suse1".

Started domain ecdvm1

[root@overlay2 ~]# xm list

Name                              ID Mem(MiB) VCPUs State  Time(s)

Domain-0                           0     3418     4 r-----    25.2

ecdvm1                             2      128     1 -b----    37.4

[root@overlay2 ~]# xm pause ecdvm1

[root@overlay2 ~]# xm list

Name                              ID Mem(MiB) VCPUs State  Time(s)

Domain-0                           0     3418     4 r-----    25.5

ecdvm1                             2      128     1 --p---    37.5

[root@overlay2 ~]# xm save ecdvm1 ecdvm1.back

 

[root@overlay2 ~]# xm save ecdvm1 ecdvm1.back

[CTRL+ C]

Interrupted.

[root@overlay2 ~]#

 

Xend.log file below

 

[2006-07-14 17:11:15 xend] INFO (SrvDaemon:285) Xend Daemon started

[2006-07-14 17:11:15 xend] INFO (SrvDaemon:289) Xend changeset: unavailable .

[2006-07-14 17:11:15 xend.XendDomainInfo] DEBUG (XendDomainInfo:201) XendDomainInfo.recreate({'paused': 0, 'cpu_time': 13439716051L, 'ssidref': 0, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 'shutdown_reason': 0, 'dying': 0, 'dom': 0, 'mem_kb': 3500796, 'maxmem_kb': -4, 'max_vcpu_id': 3, 'crashed': 0, 'running': 1, 'shutdown': 0, 'online_vcpus': 4, 'blocked': 0})

[2006-07-14 17:11:15 xend.XendDomainInfo] INFO (XendDomainInfo:213) Recreating domain 0, UUID 00000000-0000-0000-0000-000000000000.

[2006-07-14 17:11:15 xend.XendDomainInfo] WARNING (XendDomainInfo:235) No vm path in store for existing domain 0

[2006-07-14 17:11:15 xend.XendDomainInfo] DEBUG (XendDomainInfo:673) Storing VM details: {'ssidref': '0', 'uuid': '00000000-0000-0000-0000-000000000000', 'on_reboot': 'restart', 'on_poweroff': 'destroy', 'name': 'Domain-0', 'vcpus': '4', 'vcpu_avail': '15', 'memory': '3419', 'on_crash': 'restart', 'maxmem': '3419'}

[2006-07-14 17:11:15 xend.XendDomainInfo] DEBUG (XendDomainInfo:698) Storing domain details: {'cpu/1/availability': 'online', 'cpu/3/availability': 'online', 'name': 'Domain-0', 'console/limit': '1048576', 'cpu/2/availability': 'online', 'vm': '/vm/00000000-0000-0000-0000-000000000000', 'domid': '0', 'cpu/0/availability': 'online', 'memory/target': '3501056'}

[2006-07-14 17:11:15 xend] DEBUG (XendDomain:152) number of vcpus to use is 0

[2006-07-14 17:11:15 xend.XendDomainInfo] DEBUG (XendDomainInfo:882) XendDomainInfo.handleShutdownWatch

[2006-07-14 17:13:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:179) XendDomainInfo.create(['vm', ['name', 'ecdvm1'], ['memory', 128], ['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.16.13-4-xen'], ['ramdisk', '/boot/initrd-xen'], ['ip', ':1.2.3.4::::eth0:dhcp'], ['root', '/dev/sda1']]], ['device', ['vbd', ['uname', 'phy:planetlab/ecdvm1'], ['dev', 'sda1'], ['mode', 'w']]], ['device', ['vif']], ['device', ['vif', ['bridge', 'xenbr0']]]])

[2006-07-14 17:13:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:285) parseConfig: config is ['vm', ['name', 'ecdvm1'], ['memory', 128], ['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.16.13-4-xen'], ['ramdisk', '/boot/initrd-xen'], ['ip', ':1.2.3.4::::eth0:dhcp'], ['root', '/dev/sda1']]], ['device', ['vbd', ['uname', 'phy:planetlab/ecdvm1'], ['dev', 'sda1'], ['mode', 'w']]], ['device', ['vif']], ['device', ['vif', ['bridge', 'xenbr0']]]]

[2006-07-14 17:13:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:381) parseConfig: result is {'ssidref': None, 'uuid': None, 'on_crash': None, 'on_reboot': None, 'image': ['linux', ['kernel', '/boot/vmlinuz-2.6.16.13-4-xen'], ['ramdisk', '/boot/initrd-xen'], ['ip', ':1.2.3.4::::eth0:dhcp'], ['root', '/dev/sda1']], 'on_poweroff': None, 'cpus': None, 'name': 'ecdvm1', 'backend': [], 'vcpus': None, 'cpu_weight': None, 'features': None, 'vcpu_avail': None, 'memory': 128, 'device': [('vbd', ['vbd', ['uname', 'phy:planetlab/ecdvm1'], ['dev', 'sda1'], ['mode', 'w']]), ('vif', ['vif']), ('vif', ['vif', ['bridge', 'xenbr0']])], 'bootloader': None, 'cpu': None, 'maxmem': None}

[2006-07-14 17:13:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:1169) XendDomainInfo.construct: None 0

[2006-07-14 17:13:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:1201) XendDomainInfo.initDomain: 1 1.0

[2006-07-14 17:13:09 xend] DEBUG (balloon:130) Balloon: free 128; need 129.

[2006-07-14 17:13:09 xend] DEBUG (balloon:139) Balloon: setting dom0 target to 3418.

[2006-07-14 17:13:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:950) Setting memory target of domain Domain-0 (0) to 3418 MiB.

[2006-07-14 17:13:09 xend] DEBUG (balloon:126) Balloon: free 129; need 129; done.

[2006-07-14 17:13:09 xend] INFO (image:133) buildDomain os=linux dom=1 vcpus=1

[2006-07-14 17:13:09 xend] DEBUG (image:171) dom            = 1

[2006-07-14 17:13:09 xend] DEBUG (image:172) image          = /boot/vmlinuz-2.6.16.13-4-xen

[2006-07-14 17:13:09 xend] DEBUG (image:173) store_evtchn   = 1

[2006-07-14 17:13:09 xend] DEBUG (image:174) console_evtchn = 2

[2006-07-14 17:13:09 xend] DEBUG (image:175) cmdline        =  ip=:1.2.3.4::::eth0:dhcp root=/dev/sda1

[2006-07-14 17:13:09 xend] DEBUG (image:176) ramdisk        = /boot/initrd-xen

[2006-07-14 17:13:09 xend] DEBUG (image:177) vcpus          = 1

[2006-07-14 17:13:09 xend] DEBUG (image:178) features       =

[2006-07-14 17:13:10 xend] DEBUG (DevController:103) DevController: writing {'virtual-device': '2049', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vbd/1/2049'} to /local/domain/1/device/vbd/2049.

[2006-07-14 17:13:10 xend] DEBUG (DevController:105) DevController: writing {'domain': 'ecdvm1', 'frontend': '/local/domain/1/device/vbd/2049', 'dev': 'sda1', 'state': '1', 'params': 'planetlab/ecdvm1', 'mode': 'w', 'frontend-id': '1', 'type': 'phy'} to /local/domain/0/backend/vbd/1/2049.

[2006-07-14 17:13:10 xend] DEBUG (DevController:103) DevController: writing {'backend-id': '0', 'mac': '00:16:3e:52:d6:e4', 'handle': '0', 'state': '1', 'backend': '/local/domain/0/backend/vif/1/0'} to /local/domain/1/device/vif/0.

[2006-07-14 17:13:10 xend] DEBUG (DevController:105) DevController: writing {'mac': '00:16:3e:52:d6:e4', 'state': '1', 'handle': '0', 'script': '/etc/xen/scripts/vif-bridge', 'frontend-id': '1', 'domain': 'ecdvm1', 'frontend': '/local/domain/1/device/vif/0'} to /local/domain/0/backend/vif/1/0.

[2006-07-14 17:13:10 xend] DEBUG (DevController:103) DevController: writing {'backend-id': '0', 'mac': '00:16:3e:74:08:82', 'handle': '1', 'state': '1', 'backend': '/local/domain/0/backend/vif/1/1'} to /local/domain/1/device/vif/1.

[2006-07-14 17:13:10 xend] DEBUG (DevController:105) DevController: writing {'bridge': 'xenbr0', 'domain': 'ecdvm1', 'handle': '1', 'script': '/etc/xen/scripts/vif-bridge', 'state': '1', 'frontend': '/local/domain/1/device/vif/1', 'mac': '00:16:3e:74:08:82', 'frontend-id': '1'} to /local/domain/0/backend/vif/1/1.

[2006-07-14 17:13:10 xend.XendDomainInfo] DEBUG (XendDomainInfo:673) Storing VM details: {'ssidref': '0', 'uuid': '2eeadc9a-5b32-7452-b636-9799a337f616', 'on_reboot': 'restart', 'start_time': '1152915190.22', 'on_poweroff': 'destroy', 'name': 'ecdvm1', 'vcpus': '1', 'vcpu_avail': '1', 'memory': '128', 'on_crash': 'restart', 'image': '(linux (kernel /boot/vmlinuz-2.6.16.13-4-xen) (ramdisk /boot/initrd-xen) (ip :1.2.3.4::::eth0:dhcp) (root /dev/sda1))', 'maxmem': '128'}

[2006-07-14 17:13:10 xend.XendDomainInfo] DEBUG (XendDomainInfo:698) Storing domain details: {'console/ring-ref': '293514', 'console/port': '2', 'name': 'ecdvm1', 'console/limit': '1048576', 'vm': '/vm/2eeadc9a-5b32-7452-b636-9799a337f616', 'domid': '1', 'cpu/0/availability': 'online', 'memory/target': '131072', 'store/ring-ref': '293515', 'store/port': '1'}

[2006-07-14 17:13:10 xend.XendDomainInfo] DEBUG (XendDomainInfo:882) XendDomainInfo.handleShutdownWatch

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices vif.

[2006-07-14 17:13:10 xend] DEBUG (DevController:138) Waiting for 0.

[2006-07-14 17:13:10 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vif/1/0/hotplug-status.

[2006-07-14 17:13:10 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vif/1/0/hotplug-status.

[2006-07-14 17:13:10 xend] DEBUG (DevController:417) hotplugStatusCallback 1.

[2006-07-14 17:13:10 xend] DEBUG (DevController:138) Waiting for 1.

[2006-07-14 17:13:10 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vif/1/1/hotplug-status.

[2006-07-14 17:13:10 xend] DEBUG (DevController:417) hotplugStatusCallback 1.

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices usb.

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices vbd.

[2006-07-14 17:13:10 xend] DEBUG (DevController:138) Waiting for 2049.

[2006-07-14 17:13:10 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vbd/1/2049/hotplug-status.

[2006-07-14 17:13:10 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vbd/1/2049/hotplug-status.

[2006-07-14 17:13:10 xend] DEBUG (DevController:417) hotplugStatusCallback 1.

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices irq.

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices pci.

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices ioports.

[2006-07-14 17:13:10 xend] DEBUG (DevController:132) Waiting for devices vtpm.

[2006-07-14 17:13:10 xend] INFO (XendDomain:363) Domain ecdvm1 (1) unpaused.

[2006-07-14 17:13:28 xend] INFO (XendDomain:376) Domain ecdvm1 (1) paused.

[2006-07-14 17:13:37 xend] DEBUG (XendCheckpoint:81) [xc_save]: /usr/lib/xen/bin/xc_save 10 18 1 0 0 0

[2006-07-14 17:13:37 xend] DEBUG (XendCheckpoint:204) suspend

[2006-07-14 17:13:37 xend] DEBUG (XendCheckpoint:84) In saveInputHandler suspend

[2006-07-14 17:13:37 xend] DEBUG (XendCheckpoint:86) Suspending 1 ...

[2006-07-14 17:13:37 xend.XendDomainInfo] DEBUG (XendDomainInfo:882) XendDomainInfo.handleShutdownWatch -----à It HANGS HERE

 

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