I have for some time noticed that when I have Virtual Machines running
in VMware Workstation that I get failed VSS snapshots causing backup
jobs to fail. Not every time, but very frequently. I haven't been
researching it very hard simply because my PC was slow enough with
Virtual machines running non stop that I for the most part kept them
shutdown. However I recently upgraded to a new 8 core CPU, and well now
the system can keep up. I was hoping to work around the issue by using
client run before and after jobs to suspend then resume the virtual
machines.
It took me forever and a day to get the correct syntax in order to
execute a powershell script having the proper escape sequences but its
working now.
Client Run Before Job = "powershell -File \"C:\\Program
Files\\Bacula\\Scripts\\VmWareSuspend.ps1\""
Client Run After Job = "powershell -File \"C:\\Program
Files\\Bacula\\Scripts\\VmWareRestore.ps1\""
The first powershell script captures the output of this, saves it in an
XML file to be reloaded in the second script.
C:\Program Files (x86)\VMware\VMware VIX\vmrun.exe -u myusername -T ws
list
Then of course suspends or resumes the Virtual Machines.
I can execute it from the command line using the cmd /c, from either my
account or from under a command prompt in administrator mode. Both work,
but when I run it in the Client Before Job, it fails to fine the running
virtual machines. The -u was needed to have it work under the
administrator command prompt, but didn't fix it during the backup job.
Has anyone either found a way to fix the VSS snapshot issue when running
Virtual Machines, or know how to get a client before job script to run
as a different user under windows?
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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