Hello,
I am using a disk of SAN Storage attached to Guest OS as "Physical Raw Device Mapping", and mounted at /mnt/disk1.
I'd lke to take backup of /mnt/disk1 with "SAN Storage FlashCopy function", that copies entire of disk within SAN Storage Box bypassing Linux operating system and VMware kernel.
Abstract of backup script is as following.
Step1: sync ' Flush cache of Linux Operatiog System
Step2: umount /mnt/disk1
Step3: ExecFlashCopy ' Execute SAN Storage FlashCopy function
Step4: mount /dev/sde /mnt/disk1
But, if VMware kernel has cache for "Physical Raw Device Mapping Device", "Flush VMware Cache" is required at Step 2.5.
Do you know VMware cache exists for P"hysical Raw Device Mapping Device", and how can I flush it.
Thanks.