Symptoms

The NetWorker VMware Protection (NVP) integration is configured with the vProxy appliance. During vProxy backups, some VMs fail to initialize the backup. vProxy is unable to download the VM's nvram file. Other VMs within the same group, ESX host, and/or datastore may backup successfully. YYYY/MM/DD HH:MM:SS TRACE: [156] Creating HTTP Get request to download contents of config file "[snap-67a44c9a-marvnx01_LUN73_CG02] LINUXVM05/LINUXVM05.nvram". YYYY/MM/DD HH:MM:SS TRACE: [156] Starting download contents of config file "[snap-67a44c9a-marvnx01_LUN73_CG02] LINUXVM05/LINUXVM05.nvram". YYYY/MM/DD HH:MM:SS ERROR: [156] No contents return in download of "[snap-67a44c9a-marvnx01_LUN73_CG02] LINUXVM05/LINUXVM05.nvram". HTTP status: "500 Internal Server Error" YYYY/MM/DD HH:MM:SS ERROR: [156] Failed to download config file "[snap-67a44c9a-marvnx01_LUN73_CG02] LINUXVM05/LINUXVM05.nvram" using URL "https://vcenter01.testlab.com/folder/LINUXVM05/LINUXVM05.nvram?dcPath=Marlboro&dsName=snap-67a44c9a-marvnx01_LUN73_CG02". YYYY/MM/DD HH:MM:SS INFO: [156] Failed HTTP request took 4.743977748s YYYY/MM/DD HH:MM:SS TRACE: [156] HTTPRequest: &{GET https://vcenter01.testlab.com/folder/LINUXVM05/LINUXVM05.nvram?dcPath=Marlboro&dsName=snap-67a44c9a-marvnx01_LUN73_CG02 HTTP/1.1 1 1 map[Content-Type:[text/plain] Cookie:[vmware_soap_session=ab86aacaab8b1e992b72d0b40c1558c72eace96d]] 0 [] false vcenter01.testlab.com map[] map[] map[] } YYYY/MM/DD HH:MM:SS TRACE: [156] Closing VM configuration file "/cambosddbku21/mar_boost_2/active/afeb4443-00000006-523895d9-5a3895d9-1baf5000-371b9256/vm-48941-config-file-1.cfg" ... YYYY/MM/DD HH:MM:SS INFO: [156] Closed VM configuration file "/cambosddbku21/mar_boost_2/active/afeb4443-00000006-523895d9-5a3895d9-1baf5000-371b9256/vm-48941-config-file-1.cfg" ... YYYY/MM/DD HH:MM:SS ERROR: [156] Failed to download VM config file "[snap-67a44c9a-marvnx01_LUN73_CG02] LINUXVM05/LINUXVM05.nvram" into saveset file "vm-48941-config-file-1.cfg". YYYY/MM/DD HH:MM:SS ERROR: [156] Failed to Initialize Backup Descriptor.

Cause

The HTTP error is coming from the ESXi host.

Resolution

Engage with VMware support to investigate the cause of the HTTP 500 (Internal Server Error)Workaround:Storage vMotion the VM to another datastore. The VM may be vMotioned back to its original datastore afterwards.

Support Cases