On my virtualization system there are some VMs. One of them was aimed for testing some services on it. So in this case i need to have the first state of that VM.
I search for solution too much and find the snapshot as a good approach for it. Then search deeper and found out that the virsh can do it form by snapshot-create. but beside it, there is an other command, snapshot-create-as.
The server runs the following operations often. It takes a snapshot of a logical volume, then backup up the content to the remote backup server. It is possible that multiple backups and transfer happen at the same time. Will too many rsync sessions and mounted snapshot volumes be a problem?
I've been experimenting with LVM and how I can use it for managing data on my NFS server. With everything that I've read about snapshots, I am still unsure about how they perform in real life. Why does one need to allocate space in the snapshot if they are just a bunch of pointers to the original data?