Hi,
Dynamic scaling does not matter.
We didn't notice any problems with hosts.
Example VM config:
uuid ( RO) : c8545db1-c0fc-cb18-b803-a81f071c08a9
name-label ( RW): Ubuntu Trusty Tahr 14.04 (1)
name-description ( RW):
user-version ( RW): 1
is-a-template ( RW): false
is-a-snapshot ( RO): false
snapshot-of ( RO): <not in database>
snapshots ( RO): 48ad87b8-53aa-fd07-38f3-9b1e7b04c3e1;
e0d37815-1d05-3076-ca47-ec3fda820d17; 44946190-3db3-4e00-9db5-10ab45e98f09;
960c04ff-43c4-9a19-2418-795fe3c67085
snapshot-time ( RO): 19700101T00:00:00Z
snapshot-info ( RO):
parent ( RO): 48ad87b8-53aa-fd07-38f3-9b1e7b04c3e1
children ( RO):
is-control-domain ( RO): false
power-state ( RO): running
memory-actual ( RO): 8589934592
memory-target ( RO): <expensive field>
memory-overhead ( RO): 73400320
memory-static-max ( RW): 8589934592
memory-dynamic-max ( RW): 8589934592
memory-dynamic-min ( RW): 2147483648
memory-static-min ( RW): 536870912
suspend-VDI-uuid ( RW): <not in database>
suspend-SR-uuid ( RW): <not in database>
VCPUs-params (MRW):
VCPUs-max ( RW): 4
VCPUs-at-startup ( RW): 4
actions-after-shutdown ( RW): Destroy
actions-after-reboot ( RW): Restart
actions-after-crash ( RW): Restart
console-uuids (SRO): 3378c1c5-1e14-8b7a-2fef-c537589f15d3
platform (MRW): timeoffset: 76; viridian: false; nx:
true; acpi: 1; vga: std; cores-per-socket: 2; videoram: 8; device_id: 0001;
pae: true; apic: true
allowed-operations (SRO): changing_dynamic_range; migrate_send;
pool_migrate; changing_VCPUs_live; suspend; hard_reboot; hard_shutdown;
clean_reboot; clean_shutdown; pause; checkpoint; snapshot
current-operations (SRO):
blocked-operations (MRW):
allowed-VBD-devices (SRO): <expensive field>
allowed-VIF-devices (SRO): <expensive field>
possible-hosts ( RO): <expensive field>
HVM-boot-policy ( RW): BIOS order
HVM-boot-params (MRW): order: cdn
HVM-shadow-multiplier ( RW): 1.000
PV-kernel ( RW):
PV-ramdisk ( RW):
PV-args ( RW):
PV-legacy-args ( RW):
PV-bootloader ( RW):
PV-bootloader-args ( RW):
last-boot-CPU-flags ( RO): vendor: GenuineIntel; features:
009ce3bd-bfebfbff-00000001-28100800
last-boot-record ( RO): <expensive field>
resident-on ( RO): 81d5ebc3-2938-4ae1-8ed2-e3e665927df0
affinity ( RW): 81d5ebc3-2938-4ae1-8ed2-e3e665927df0
other-config (MRW): vgpu_pci: ; mac_seed:
1c7b4243-2fa3-9faa-de02-74cef95160eb; base_template_name: Ubuntu Trusty
Tahr 14.04; install-methods: cdrom,nfs,http,ftp; linux_template: true
dom-id ( RO): 17
recommendations ( RO): <restrictions><restriction
field="memory-static-max" max="549755813888" /><restriction
field="vcpus-max" max="16" /><restriction property="number-of-vbds"
max="16" /><restriction property="number-of-vifs" max="7" /><restriction
field="allow-gpu-passthrough" value="0" /></restrictions>
xenstore-data (MRW): vm-data:
ha-always-run ( RW) [DEPRECATED]: false
ha-restart-priority ( RW):
blobs ( RO):
start-time ( RO): 20150424T12:02:11Z
install-time ( RO): 20150408T15:46:57Z
VCPUs-number ( RO): 4
VCPUs-utilisation (MRO): <expensive field>
os-version (MRO): name: Ubuntu 14.04.2 LTS; uname:
3.16.0-30-generic; distro: ubuntu; major: 14; minor: 04
PV-drivers-version (MRO): major: 6; minor: 5; micro: 0; build:
90158
PV-drivers-up-to-date ( RO): true
memory (MRO):
disks (MRO):
networks (MRO): 0/ip: 10.2.1.123; 0/ipv6/0:
fe80::3876:8eff:fe25:1494
other (MRO):
platform-feature-multiprocessor-suspend: 1; feature-suspend: 1;
feature-shutdown: 1; feature-vcpu-hotplug: 1
live ( RO): false
guest-metrics-last-updated ( RO): 20150424T12:13:44Z
cooperative ( RO) [DEPRECATED]: <expensive field>
tags (SRW):
appliance ( RW): <not in database>
start-delay ( RW): 0
shutdown-delay ( RW): 0
order ( RW): 0
version ( RO): 0
generation-id ( RO):
--
Regards,
Tomasz Zięba
Twitter: @TZieba
LinkedIn: pl.linkedin.com/pub/tomasz-zięba-ph-d/3b/7a8/ab6/
<http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
2015-04-24 9:29 GMT+02:00 Jan-Arve Nygård <jan.arve.nyg...@gmail.com>:
> Tomasz:
>
> Did you have dynamic scaling and HVM enabled for the Ubuntu 14.04 template
> you tested with? If we change the OS-type to Ubuntu 12.04 (PV) or disable
> dynamic scaling everything works as it should.
>
> The disabling of intremap didn't solve this for us so we have locked the
> issue down to affect snapshot w/memory / live migration for Ubuntu 14.04
> (HVM). The hosts still crashes like earlier but no crash dump / kernel
> panic is logged like earlier. We managed to get the data from serial port
> so we have a case filed for this. However it would be very interesting to
> know if this also affect others.
>
>
> 2015-04-10 13:36 GMT+02:00 Jan-Arve Nygård <jan.arve.nyg...@gmail.com>:
>
>> Yep! Btw, the host are HP ProLiant BL460c Gen9 so anyone with a similar
>> setup can be aware of this.
>>
>> 2015-04-10 10:15 GMT+02:00 Vadim Kimlaychuk <vadim.kimlayc...@elion.ee>:
>>
>>> Holy Moly ! This is something really important to consider. Luckiliy you
>>> don't need to change motherboard and have workaround.
>>>
>>> Vadim.
>>>
>>> -----Original Message-----
>>> From: Jan-Arve Nygård [mailto:jan.arve.nyg...@gmail.com]
>>> Sent: Thursday, April 09, 2015 6:36 PM
>>> To: users@cloudstack.apache.org
>>> Subject: Re: XenServer 6.5
>>>
>>> Even though the identifications steps don't match, disabling intremap in
>>> XS
>>> 6.5 seems to have solved the issue for us:
>>> http://support.citrix.com/article/CTX136517
>>>
>>> 2015-04-08 22:15 GMT+02:00 Tomasz Zięba <t.a.zi...@gmail.com>:
>>>
>>> > Yes, XenTools65
>>> >
>>> > Regards,
>>> > Tomasz Zięba
>>> >
>>> > Twitter: @TZieba
>>> > LinkedIn: pl.linkedin.com/pub/tomasz-zięba-ph-d/3b/7a8/ab6/
>>> <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> >
>>> > sent from mobile
>>> > 8 kwi 2015 21:17 "Jan-Arve Nygård" <jan.arve.nyg...@gmail.com>
>>> napisał(a):
>>> >
>>> > > Thanks for testing and feedback. I suppose you are using the tools
>>> > provided
>>> > > with XS 6.5 as well?
>>> > >
>>> > > I have sent our crash dumps to Citrix and are awaiting their
>>> analysis.
>>> > Will
>>> > > update with the root cause when it's found.
>>> > >
>>> > > -thinktwo
>>> > >
>>> > > 2015-04-08 20:56 GMT+02:00 Tomasz Zięba <t.a.zi...@gmail.com>:
>>> > >
>>> > > > Hi,
>>> > > >
>>> > > > Test 1
>>> > > >
>>> > > > 1. XS6.5 without updates
>>> > > > 2. XenCenter only
>>> > > > 3. Storage
>>> > > > a) NFS primary storage
>>> > > > b) FC primary storage
>>> > > > 4. VM Ubuntu 14.04.02 with Tools
>>> > > > 5. Snapshots
>>> > > > a) VM Snapshots disks
>>> > > > b) VM Snapshots disks and memory
>>> > > >
>>> > > > Test 2
>>> > > >
>>> > > > 1. XS6.5 all updates: XS65E001, XS65E002, XS65E003, XS65E005,
>>> > > > XS65E006,
>>> > > > XS65E008
>>> > > > 2. XenCenter only
>>> > > > 3. Storage
>>> > > > a) NFS primary storage
>>> > > > b) FC primary storage
>>> > > > 4. VM Ubuntu 14.04.02 with Tools
>>> > > > 5. Snapshots
>>> > > > a) VM Snapshots disks
>>> > > > b) VM Snapshots disks and memory
>>> > > > Summary
>>> > > > VM Reverts (with all combinations of hardware and updates) works
>>> fine.
>>> > > >
>>> > > >
>>> > > > --
>>> > > > Regards,
>>> > > > Tomasz Zięba
>>> > > > Twitter: @TZieba
>>> > > > LinkedIn: pl.linkedin.com/pub/tomasz-zięba-ph-d/3b/7a8/ab6/
>>> <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > > <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > > > <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > > > <http://pl.linkedin.com/pub/tomasz-zi%C4%99ba-ph-d/3b/7a8/ab6/>
>>> > > >
>>> > > > 2015-04-08 17:30 GMT+02:00 Jan-Arve Nygård
>>> > > > <jan.arve.nyg...@gmail.com
>>> > >:
>>> > > >
>>> > > > > Thanks,
>>> > > > >
>>> > > > > We are running a build based on 4.5.1. Snapshots with memory
>>> > > > > (from CloudStack or XenCenter) and a revert works as expected
>>> > > > > with a CentOS
>>> > > 6.6
>>> > > > > install and XenServer 6.5 and the same version of
>>> > xen-guest-utilities.
>>> > > > >
>>> > > > > I also just tested with a new install of Ubuntu 14.04.2 LTS from
>>> > > running
>>> > > > > kernel 3.16.0-30-generic #40~14.04.1-Ubuntu with a new
>>> > > > > installation
>>> > of
>>> > > > > xe-guest-utilities_6.5.0-1400_amd64.deb installed (from Xens
>>> > > > xs-tools.iso)
>>> > > > > and the XenServer 6.5 hosts running the VM still crashed when
>>> > > > > taking snapshot with memory.
>>> > > > >
>>> > > > > It would be very interesting to know if you also experience this
>>> > > behavior
>>> > > > > so let me know when you have had time to test it.
>>> > > > >
>>> > > > >
>>> > > > > -thinktwo
>>> > > > >
>>> > > > > 2015-04-08 16:46 GMT+02:00 Vadim Kimlaychuk <
>>> > vadim.kimlayc...@elion.ee
>>> > > >:
>>> > > > >
>>> > > > > > Hi,
>>> > > > > >
>>> > > > > > This is really scary. Can test within couple of days,
>>> > > > > > but I
>>> > > > will
>>> > > > > > put 4.5.1 version as 4.5 is broken. Memory snapshots are not
>>> > > available
>>> > > > > for
>>> > > > > > the XenServer as far as I know, but they just failed at CS
>>> before.
>>> > > > Host
>>> > > > > > did crash definately.
>>> > > > > >
>>> > > > > > Vadim.
>>> > > > > >
>>> > > > > > -----Original Message-----
>>> > > > > > From: Jan-Arve Nygård [mailto:jan.arve.nyg...@gmail.com]
>>> > > > > > Sent: Wednesday, April 08, 2015 2:43 PM
>>> > > > > > To: users@cloudstack.apache.org
>>> > > > > > Subject: XenServer 6.5
>>> > > > > >
>>> > > > > > Hi all,
>>> > > > > >
>>> > > > > > We recently experienced a host crash on XenServer 6.5 (all
>>> > available
>>> > > > > > patches applied) when running snapshot of the virtual machines
>>> > disks
>>> > > > and
>>> > > > > > memory. Snapshots of disks only (not memory) does not cause a
>>> > > XenServer
>>> > > > > > crash. This happens both when initiating the snapshots from
>>> > > CloudStack
>>> > > > > 4.5
>>> > > > > > or directly from XenServer/Center.
>>> > > > > >
>>> > > > > > We are able to reproduce this with Ubuntu 14.04.2 and
>>> > > > xe-guest-utilities
>>> > > > > > 6.5.0-1400, XenServer 6.5 with all available patches and FC as
>>> > > primary
>>> > > > > > storage. We will continue to test with other
>>> versions/combinations.
>>> > > > > >
>>> > > > > > Could someone else with XenServer 6.5 please try a full
>>> > > > > > snapshot of
>>> > > VM
>>> > > > > > with disks and memory to see if you experience the same? We
>>> > > > > > have
>>> > the
>>> > > > > crash
>>> > > > > > dumps and will report this but it would be useful with some
>>> > > > > > more
>>> > > > > feedback.
>>> > > > > >
>>> > > > > >
>>> > > > > > Thanks,
>>> > > > > >
>>> > > > > > -thinktwo
>>> > > > > >
>>> > > > >
>>> > > >
>>> > >
>>> >
>>>
>>
>>
>
