Hi Guys,
I got a little confused about quiesce flag during snapshot creation when guest OS is Linux, as I read the VDDK documents.
Per "Driver Type and Quiescing Mechanisms Used According to Guest Operating Systems" in the following page:
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vddk.pg.doc%2FvddkBkupVadp.9.6.html&resultof=%22VDDK%22%20%22vddk%22%20%22Sync%22%20%22sync%22%20%22Driver%22%20%22driver%22
only Crash-consistent quiescing is supported for Linux Guest OS.
Q1. Does this mean I can not set quiesce flag as true when I call CreateSnapshot_Task against a Linux VM ?
My understanding is, quiesce level (crash, guest filesystem, application) can be aotomatically adjusted according to information like guest os type and other configuration. So there is no problem for me to set set quiesce flag as true even when I call CreateSnapshot_Task against a Linux VM. Am I understanding right ?
Q2. I saw the following page is discussing the quiesce flag when creating snapshot:
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.wssdk.pg.doc%2FPG_VM_Manage.13.3.html
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quiesce– If true and the virtual machine is powered on when the snapshot is taken, VMware Tools is used to quiesce the file system in the virtual machine. This ensures that a disk snapshot represents a consistent state of the guest file systems.
If the virtual machine is powered off or VMware Tools is not available, the quiesce flag is ignored.
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So what's "VMware Tools" mean in the above sentence in Linux guest OS , does it mean Sync Driver ?
If I installed "VMware Tools" on Linux Guest OS, but disabled SYNC Driver, then quiesce flag get ignored even when I set it as true in CreateSnapshot_Task, am I understanding right ?
Thanks & Regards,
Bing