Hi,
This is the same as any block storage subsystem copy/snapshot function.
Is you wish to successfully create a block data snapshot you will need to
control the storage consumer activity in some way. Some file systems will be
more tolerant and provide crash consistent recovery states and some will render
the storage as fubar.
For example, I perform iSCSI based ZFS snapshots for VMware systems. In order
to guarantee data consistency of the ZFS snapshot we need to quiece the block
data changes.
I perform this with scripts that invoke actions like invoke VM snapshots,
Service suspension and so forth. You can use a number of methods including
controlling Windows hosts over ssh and PowerShell Remote.
Regards,
Mike
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