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XenServer VM unable to start

Posted on 2013-10-26
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Last Modified: 2013-11-09
Hi

I've got an interesting one here...

Client has a XenServer to run a temporary Server 2008 VM - they had some server troubles and this has been set up for them for temporary use.
It's been set up with a C: of 250GB and a D: of 750GB.

So it's been running fine for a while now (few months actually - they've taken theior sweet time in deciding how they want to continue). They have a load of data stored on this VM, yesterday the physical machine was restarted (I was not party to this) and there was an error about the storage not being attached.
This is odd, because the XenServer is a single HP Proliant ML110 G4 using internal storage - all hdd's appear to be ok and running.

I connected to the pc that XenCenter is running on, started the VM and it started ok - the guy onsite said that the SR mysteriously reconnected when I logged on to the management pc...

So with the VM booting, I thought this was the end of it.
Except that the VM seems to have been starting up since then. It spent probably 20 hours on the 'Waiting for the local service manager' screen.
Having seen something like this previously on a physical 2008 server which was caused by IP settings that disappeared, I figured I'd bounce the VM, start it in Safe Mode, check the IP settings and troubleshoot further if that did not help.
Problem: VM now won't start.
Trying to start it in XenCenter gives 'the SR failed to complete the operation'.

Is there any way to fix this?

Alternatively, is there any way to get the D: data out?
Moving the VHD or something to that effect?

GC
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Question by:Altra
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Accepted Solution

by:
Dirk Kotte earned 750 total points
ID: 39603832
to export the data:
build a new Win7 VM.
detach the VHD from the server-VM and attach the disk to this VM as secong HDD.
now you can access and copy the files

it's a good idea to check and configure the name of the HDD before detaching them.

non starting VM:
on physical servers sometimes removing the network jack is the last option to boot and logon. after this the network can re-connected.
remove the network-interface from xen-center is an option...
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Author Comment

by:Altra
ID: 39604258
Thanks for the input!
Didn't even think to go the 2nd VM route! Was a long week...

The Server VM is to be decomissioned after the data is copied off anyway, so if that works, that's all I need - just to be able to get the data off.

It does look as though the 2nd VHD is ok, so I'll try that and let you know...
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Assisted Solution

by:Altra
Altra earned 0 total points
ID: 39623615
Thanks for the ideas, but as it turns out there was a hardware issue on the server - one of the 4 hdd's seems to be a little iffy, reseated the SATA connectors, XenServer came up ok, the SR was offline fora while, came up ok eventually (suspect it was a RAID rebuild type thing happening) then I could boot the VM to safe mode with networking (wouldn't boot normally) and managed to copy the data off...
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Author Closing Comment

by:Altra
ID: 39635521
The problem was caused by a hardware issue that I had to resolve first, after that the suggestions were less relevant as I could get the VM running in Safe Mode with Networking.
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