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VMware error received: Unable to communicate with the remote host, since it is disconnected?

Created: 16 Apr 2013 | 8 comments
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Jaykullar's picture

You might want to put in a bit about the NBU environment and how its connected etc and what steps you've taken to trouble shoot.

pep-e's picture

Hi,

Taking advantage of this thread.. We're experiencing the same problem. Our NetBackup Master Server is this:

HARDWARE Windows x64
VERSION NetBackup 7.5.0.5
RELEASEDATE Sat Feb  9 21:30:19 CST 2013
BUILDNUMBER 20130209

We are trying to back up some templates. Our only schedule is a daily full backup, but out first manual tests are giving an error message. This is a trimmed Detailed Status:

[...]

08/05/2013 09:36:35 - estimated 0 kbytes needed
08/05/2013 09:36:35 - begin Parent Job
08/05/2013 09:36:35 - begin VMware: Start Notify Script
08/05/2013 09:36:35 - Info RUNCMD (pid=5420) started
08/05/2013 09:36:35 - Info RUNCMD (pid=5420) exiting with status: 0
Operation Status: 0
08/05/2013 09:36:35 - end VMware: Start Notify Script; elapsed time 0:00:00
08/05/2013 09:36:35 - begin VMware: Step By Condition
Operation Status: 0
08/05/2013 09:36:35 - end VMware: Step By Condition; elapsed time 0:00:00
08/05/2013 09:36:35 - begin VMware: Read File List
Operation Status: 0
08/05/2013 09:36:35 - end VMware: Read File List; elapsed time 0:00:00
08/05/2013 09:36:35 - begin VMware: Create Snapshot
08/05/2013 09:36:37 - started process bpbrm (pid=644)
08/05/2013 09:36:38 - Info bpbrm (pid=644) BP-Test-Win-7 is the host to backup data from
08/05/2013 09:36:38 - Info bpbrm (pid=644) reading file list from client
08/05/2013 09:36:38 - Info bpbrm (pid=644) start bpfis on client
08/05/2013 09:36:38 - Info bpbrm (pid=644) Starting create snapshot processing
08/05/2013 09:36:39 - Info bpfis (pid=2568) Backup started
08/05/2013 09:36:39 - snapshot backup of client BP-Test-Win-7 using method VMware_v2
08/05/2013 09:39:10 - Critical bpbrm (pid=644) from client BP-Test-Win-7: FTL - VMware snapshot failed: SYM_VMC_TASK_REACHED_ERROR_STATE
08/05/2013 09:39:10 - Critical bpbrm (pid=644) from client BP-Test-Win-7: FTL - VMware error received: Unable to communicate with the remote host, since it is disconnected.
08/05/2013 09:39:10 - Critical bpbrm (pid=644) from client BP-Test-Win-7: FTL - snapshot processing failed, status 156
08/05/2013 09:39:10 - Critical bpbrm (pid=644) from client BP-Test-Win-7: FTL - snapshot creation failed, status 156
08/05/2013 09:39:10 - end writing
Operation Status: 156
08/05/2013 09:39:10 - end VMware: Create Snapshot; elapsed time 0:02:35
08/05/2013 09:39:10 - begin VMware: Stop On Error
Operation Status: 0
08/05/2013 09:39:10 - end VMware: Stop On Error; elapsed time 0:00:00
08/05/2013 09:39:10 - begin VMware: Delete Snapshot
08/05/2013 09:39:12 - started process bpbrm (pid=3432)
08/05/2013 09:39:13 - Info bpbrm (pid=3432) Starting delete snapshot processing
08/05/2013 09:39:13 - Info bpfis (pid=0) Snapshot will not be deleted
08/05/2013 09:39:16 - end writing
Operation Status: 1542
08/05/2013 09:39:16 - end VMware: Delete Snapshot; elapsed time 0:00:06
Operation Status: 156
08/05/2013 09:39:16 - end Parent Job; elapsed time 0:02:41
snapshot error encountered  (156)
 

I'm still investigating whether there are some details that make copies of templates different from copies of regular virtual machines. In the meantime, any suggestion would be appreciated  :-)

Thanks in advance!

Nagalla's picture

what is the Vcenter Version?

does your backup host also in the 7.5.0.5?

when you get the failurs of this what is the eror you are seeing in the Vcenter?

also pleaes enble the verbose level 5 in backup host and collect the logs

install_path\NetBackup\logs\bpfis

pep-e's picture

Hi Nagalla,

My apologies for not reading your post before. vCenter is 5.1 and both Master Server and Backup Host are 7.5.0.5. Apparently there were no entries in the "Recent Tasks" pane of the vSphere Client related to this, but anyway now backups are working, as I have stated in another post.

Thanks anyway for your help!  :-)

pep-e's picture

The problem seems to be solved. Short list of facts:

- They were not actual templates, but virtual machines that remain stopped (nearly) all the time.

- A couple of virtual machines under the same vCenter Server were being backed up without problems.

- Deleted and re-added that vCenter Server under Media and device Maangement -> Credentials -> Virtual Machine Servers.

- Rebooted both the affected backup host and the Master Server.

Now backups for all the virtual machines that belong to that same vCenter Server are working, even using hotadd method, which is great.

halo's picture

We saw this issue in our environment recently, where in vCenter some VMs displayed the error mesasge 'Unable to communicate with the remote host, since it is disconnected.' This in our case was related to the ESX host disconnected itself from vCenter.