How actually Vmotion and SVmotion works with different % of completion or failure at different %

Need to understand how Vmotion and SVmotion proceed @different percentage of completion or if it failed @any percentage level.

Will help us to diagnose accordingly ,Thanks.
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patronTechnical consultant Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
vMotion - just moves the VM process between hosts, no data is moved, it remains on the datastore.

Storage vMotion - moves the virtual disks, (vmdks) between datastores.

Both use the vMotion network, but are very different process.
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patronTechnical consultant Author Commented:
Thanks Andrew, would need you expert advise to understand the % criteria for Vmotion and Svmotion ?

like most of the time it takes long time @ 18%,26 %,32 % and 95% or stuck @specific % in process .

Hope now i have clarified  my question to you.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Network, Datastore too slow. a vMotion or Storage vMotion either completes or fails. There is no half way house.

it's just copying data.

check the logs (/var/logs) - vmkernel.log - the answer will be in here.
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gheistCommented:
95% means sommiting all data to disk. It will go ahead when data is safe on destination disk/host
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patronTechnical consultant Author Commented:
grate ,thanks.

what about @32 %..if it got stuck ..is there any permanent solution to get this resolved ?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, check the logs......what do they say?

if it says lost contact, or high latency aborted, it's your network and/or storage. You can then moan at your network or storage guys!

Escalate to VMware Support!
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patronTechnical consultant Author Commented:
@Andrew..I have alreday shared vmkernel logs snap in my another question.. so would appreciate your expert advise on same.

And here i need to understand if this time out  error is coming due to topology(way how svmotion works/process in 4.1 and 5.1 ) changed in 5.1, as earlier it was something different.. how svmotion or vmotion works.

 That is why i need to understand this % wise calculation for Svmotion in 5.1..or if it is still same as it was in 4.1 ?

Case already  logged with VM Support for issue..but would really appriciate  if here we can get the expert advise for same to get this more explored .
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gheistCommented:
vmware has hundreds of articles in KB resolving problems with various *-motions
Easiest is to write percentile, vmware esxi version, and type of vmotion and ask google...
Or ask vmware support. Or at least sepcify this information here?
32% is different for host profile, snapshot, vmotion of live machine, dead machine, vmtools running or not etc.
I'd bet on data being copied... And network timeout kicking in.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Please post logs here.
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patronTechnical consultant Author Commented:
Thanks Andrew for all your supportive commnets here..but further i will riase this concern to VMware
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patronTechnical consultant Author Commented:
Thanks
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