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perjonsson1960
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Transmission pipeline hanged

Post by perjonsson1960 » May 15, 2019 6:22 am

Folks,

Last week we "sucked in" our vCenter server into VMware. Before that it was a physical Windows server. After this change, every other day or so, we are getting this error during backup:

"Transmission pipeline hanged, aborting process."

We have a large backup job that backs up 215 VMs, and sometimes one of the VMs (but not the same VM every time) gets this error. And B&R does a retry of that VM, and the retry succeeds.

This error never occured when we had the physical Windows server as the vCenter server. Does anybody know what this is all about?

PJ

Mike Resseler
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Re: Transmission pipeline hanged

Post by Mike Resseler » May 15, 2019 6:41 am

Hi Per,

That message could mean a few things I think. In this case, I would look in the direction of the VM not being reachable or talking back. Maybe because the bigger issue here is the communication with VCenter where there is an issue or so. Difficult to say with only this one message.

I would suggest to open a support call (with the regular post the support case ID here and the outcome after that) so the engineers can look at the messages before and after this in the logs. They might (no promises as this typical message is very generic) see where the communication is lost or hanging

Cheers
Mike

HannesK
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Re: Transmission pipeline hanged

Post by HannesK » May 15, 2019 6:45 am

Hello,
I suggest contacting support for that. I just searched a little bit internally and there seem to be various reasons for that from corrupted VMs to network and resource issues. So it might be a coincidence between P2V of your VCenter.

Please post the case number here for reference.

Best regards,
Hannes

trevorgov
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[MERGED] Error: Transmission pipeline hanged, aborting process. When backing up exchange 2016 server

Post by trevorgov » Sep 04, 2019 9:45 am

Good day,

Please can someone assist, for the last 3 weeks now we are not able to backup our exchange server which is a vm on VMWare ESXi. The backup starts fine and runs till about 20% and then just hangs and eventually fails after 5 hours or so with the error, 'Transmission pipeline hanged, aborting process." We have 2 other jobs running on the same Veeam management PC and they run fine, I have tried using different proxies, different repositories, even created another management PC all return the same result. However if I do an agent backup from within Exchange 2016, that goes through fine.I have reported the case to Veeam support but I am just concerned that we are sitting ducks without a proper backup for the last 3 weeks.

Any suggestions would be much appreciated.

Case number : #03723972

foggy
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Re: Transmission pipeline hanged

Post by foggy » Sep 04, 2019 10:48 am

Hi Trevor, if it is a production VM, I'd increase the case severity and also ask to escalate it to a higher tier, looks like there's not much progress after almost two weeks of investigation.

trevorgov
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Re: Transmission pipeline hanged

Post by trevorgov » Sep 04, 2019 11:25 am

Thanks Foggy, the case severity is on 4 at the moment. How would I escalate the issue?

foggy
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Re: Transmission pipeline hanged

Post by foggy » Sep 04, 2019 4:41 pm

Severity 4 is the lowest one. To escalate the case, please use the 'Talk to a Manager' option on the support portal. Thanks!

trevorgov
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Re: Transmission pipeline hanged

Post by trevorgov » Sep 05, 2019 11:12 am 1 person likes this post

Perfect, thanks Foggy. They requested a whole load of logs but it has been escalated.

rodextreme
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Re: Transmission pipeline hanged

Post by rodextreme » Sep 30, 2019 3:44 pm

I'm facing the same problem, case opened - 03782873

KOPFteam
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Re: Transmission pipeline hanged

Post by KOPFteam » Nov 01, 2019 2:28 pm

I had this problem solved by Veeam support yesterday (case 03838384).

They first suspected a problem with CBT. I disabled CBT for this VM + the used drives and deleted a few files in the datastore as specified in the VMware KB article. Didn't help. Still "Transmission pipline hanged".

Then they asked me to activate nbdssl = "Enable host to proxy traffic encyption in Network mode (NBDSSL)" in the properties of the used proxy (in the Transport Mode section). And this did it! No more "Transmission pipline hanged"!

Problem solved :-)

bdufour
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Re: Transmission pipeline hanged

Post by bdufour » Nov 01, 2019 8:31 pm

before we reinvent the wheel, try vmotioning exchange to another host, and see if that solves the issue or not.

perjonsson1960
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Re: Transmission pipeline hanged

Post by perjonsson1960 » Nov 07, 2019 1:18 pm

The "Enable host to proxy traffic encyption in Network mode" didn't solve it for me. I still get "Transmission pipline hanged, aborting process" once in a while. Maybe once a week, and not with the same VM every time, but all the affected VMs reside in the same Esxi host. Maybe there is a problem with that host. And sometimes I also get "Error: VSSControl: Failed to freeze guest over network, wait timeout" with VMs on that Esxi host.

veremin
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Re: Transmission pipeline hanged

Post by veremin » Nov 07, 2019 1:25 pm

Have you tried to resolve the issue via support team? They should be able to identify the root cause, based on the infrastructure and debug log investigation. Thanks!

perjonsson1960
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Re: Transmission pipeline hanged

Post by perjonsson1960 » Nov 07, 2019 3:07 pm

I tried to submit a case, but when it had been uploading the 2 GB zip file with logs for about an hour, and the page refreshed, and the "Next" button was grayed out, I got irritated and skipped the upload. But when I continued to submit the case, it failed, and no case was even created. Perhaps I will try again at another time.

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