VMWare backups are hanging or failing with status 41 due to WMI hanging on IsSystemBootedUsingEFIFirmware()
| Article:TECH199036 | | | Created: 2012-10-26 | | | Updated: 2013-05-16 | | | Article URL http://www.symantec.com/docs/TECH199036 |
Problem
When the VMware Backup Host has a uEFI configured partition, NetBackup has to query Windows Management Instrumentation (WMI) to obtain information about BCD uEFI configured partition. If WMI queries hang or are slow, NetBackup will hang or slow down waiting on a response from WMI.
Error
From the bpbkar log you will see a delay in between the EFI call:
11:05:46.199 PM: [4000.6600] <2> ov_log::V_GlobalLog: INF -IsSystemBootedUsingEFIFirmware() - Enter
11:15:51.557 PM: [4000.6600] <2> ov_log::V_GlobalLog: INF - Boot Manager Path: \EFI\Microsoft\Boot\bootmgfw.efi
Detail Status:
8/30/2012 2:57:49 AM - Info bpbrm(pid=11260) starting bpbkar32 on client
8/30/2012 2:57:49 AM - connecting
8/30/2012 2:57:49 AM - connected; connect time: 00:00:00
8/30/2012 3:13:50 AM - end writing
network connection timed out(41)
Environment
This issue was seen on a Windows 2008 system with and EFI configured BCD configuration.
Cause
The issue is caused by a delay in Windows Management and Instrumentation(WMI). NetBackup waits until WMI responds before moving forward.
Solution
Symantec Corporation has acknowledged that the above-mentioned issue (Etrack 3131436) is present in the current version(s) of the product(s) mentioned at the end of this article. Symantec Corporation is committed to product quality and satisfied customers.
This issue was scheduled to be included in the following release:
- NetBackup for VMware 7.5 Maintenance Release 6 (7.5.0.6)
When NetBackup 7.5.0.6 is released, please access the following link for download and README information:
http://go.symantec.com/nbu
Please note that Symantec Corporation reserves the right to remove any fix from the targeted release if it does not pass quality assurance tests or introduces new risks to overall code stability. Symantec's plans are subject to change and any action taken by you based on the above information or your reliance upon the above information is made at your own risk.
Workarounds:
1. Engage Microsoft to identify why a query to WMI is taking so long.
2. Rebuild the Operation System without the EFI partition.
If neither of these workarounds are feasible, please contact Symantec technical support, referencing this document and Etrack 3131418 to obtain an Emergency Engineering Binary (EEB) bundle for NetBackup 7.5.0.5 containing a fix for this issue.
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| Source | ETrack |
| Value | 3131436 |
| Description | VMware backups are hanging on EFI information |
Article URL http://www.symantec.com/docs/TECH199036
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Thank you.