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[Xen-users] Lvm-based domUs keep crashing... limited to 2 domU

To: "Xen Users" <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] Lvm-based domUs keep crashing... limited to 2 domU
From: "john maclean" <jayeola@xxxxxxxxx>
Date: Tue, 19 Jun 2007 12:05:32 +0100
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Chaps,

Xen 3.1.0 running on Debian Lenny quite well. A self build using lvm2
for the xen instances. On Sunday I had six running OK. Now When I
start the third domain it wants to start but crashes.

Here follows an extract of /var/log/xen/xend.log. I hope that some one
out there can help me to diagnose and fix what's going on... Note the
line "VM is already running" - it's not unless xm list is not finding
the domains.

[2007-06-19 10:49:47 5915] DEBUG (__init__:1072)
XendDomainInfo.destroyDomain(10)
[2007-06-19 10:49:47 5915] DEBUG (__init__:1072)
XendDomainInfo.create_from_dict({'vcpus_params': {}, 'PV_args':
'root=/dev/sda1 ro ip=:1.2.3.4:::blag50k:eth0:dhcp 4', 'features': '',
'cpus': [], 'paused': 0, 'domid': 10, 'shutdown': 0, 'VCPUs_live': 1,
'PV_bootloader': '', 'actions_after_crash': 'restart', 'vbd_refs':
['5eb56f79-0dc8-6b38-efea-0b68f6eabc22',
'13006cbd-9d34-017b-2118-7fa42797ffd7'], 'PV_ramdisk': '',
'is_control_domain': False, 'name_label': 'blag50k',
'VCPUs_at_startup': 1, 'HVM_boot_params': {}, 'platform':
{'rtc_timeoffset': '0'}, 'cpu_weight': 256, 'console_refs':
['bc6ba6c2-caab-175d-19ef-19f03be6242a'], 'online_vcpus': 1,
'cpu_cap': 0, 'blocked': 0, 'on_xend_stop': 'ignore',
'memory_static_min': 0, 'HVM_boot_policy': '', 'shutdown_reason': 3,
'VCPUs_max': 1, 'start_time': 1182246570.029721, 'memory_static_max':
33554432, 'actions_after_shutdown': 'destroy', 'on_xend_start':
'ignore', 'crashed': 1, 'memory_dynamic_max': 33554432,
'actions_after_suspend': '', 'is_a_template': False,
'PV_bootloader_args': '', 'memory_dynamic_min': 33554432, 'uuid':
'55a8dec9-df56-89f9-7d3e-fe3898926f45', 'PV_kernel':
'/boot/vmlinuz-2.6.18-xen', 'cpu_time': 0.382074786, 'shadow_memory':
0, 'dying': 1, 'vcpu_avail': 1, 'notes': {'HV_START_LOW':
'4118806528', 'FEATURES':
'writable_page_tables|writable_descriptor_tables|auto_translated_physmap|pae_pgdir_above_4gb|supervisor_mode_kernel',
'VIRT_BASE': '3221225472', 'GUEST_VERSION': '2.6', 'PADDR_OFFSET':
'3221225472', 'GUEST_OS': 'linux', 'HYPERCALL_PAGE': '3238006784',
'LOADER': 'generic', 'SUSPEND_CANCEL': '1', 'PAE_MODE': 'yes',
'ENTRY': '3238002688', 'XEN_VERSION': 'xen-3.0'}, 'other_config': {},
'running': 0, 'actions_after_reboot': 'restart', 'vif_refs':
['377bfe0b-f6f8-a70a-2435-7e433b9f5d3f'], 'vtpm_refs': [], 'security':
None, 'devices': {'5eb56f79-0dc8-6b38-efea-0b68f6eabc22': ('vbd',
{'uuid': '5eb56f79-0dc8-6b38-efea-0b68f6eabc22', 'bootable': 1,
'devid': 2049, 'driver': 'paravirtualised', 'dev': 'sda1', 'uname':
'phy:/dev/acidlvm/blag50k', 'mode': 'w'}),
'377bfe0b-f6f8-a70a-2435-7e433b9f5d3f': ('vif', {'devid': 0, 'uuid':
'377bfe0b-f6f8-a70a-2435-7e433b9f5d3f'}),
'13006cbd-9d34-017b-2118-7fa42797ffd7': ('vbd', {'uuid':
'13006cbd-9d34-017b-2118-7fa42797ffd7', 'bootable': 0, 'devid': 2050,
'driver': 'paravirtualised', 'dev': 'sda2', 'uname':
'phy:/dev/acidlvm/blag50kswap', 'mode': 'w'}),
'bc6ba6c2-caab-175d-19ef-19f03be6242a': ('console', {'other_config':
{}, 'protocol': 'vt100', 'uuid':
'bc6ba6c2-caab-175d-19ef-19f03be6242a', 'location': '2'})}})
[2007-06-19 10:49:47 5915] ERROR (__init__:1072) Domain construction failed
Traceback (most recent call last):
 File "//usr/lib/python/xen/xend/XendDomainInfo.py", line 103, in
create_from_dict
   vm.start()
 File "//usr/lib/python/xen/xend/XendDomainInfo.py", line 420, in start
   raise XendError('VM already running')
XendError: VM already running
[2007-06-19 10:49:47 5915] DEBUG (__init__:1072)
XendDomainInfo.destroy: domid=10
[2007-06-19 10:49:47 5915] ERROR (__init__:1072) Failed to restart domain 10.
Traceback (most recent call last):
 File "//usr/lib/python/xen/xend/XendDomainInfo.py", line 1216, in _restart
   new_dom = XendDomain.instance().domain_create_from_dict(
 File "//usr/lib/python/xen/xend/XendDomain.py", line 932, in
domain_create_from_dict
   dominfo = XendDomainInfo.create_from_dict(config_dict)
 File "//usr/lib/python/xen/xend/XendDomainInfo.py", line 103, in
create_from_dict
   vm.start()
 File "//usr/lib/python/xen/xend/XendDomainInfo.py", line 420, in start
   raise XendError('VM already running')
XendError: VM already running


--
John Maclean  - 07739 171 531
MSc (DIC)

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