One of the most common questions I get in regards to Veeam and the usage of XFS filesystem with its reflink capabilities is “how do I measure the real used space?”. There are some techniques and some blog posts around, but I noticed that none of them were written with operations in mind. Time to fix this.
How much space am I saving thanks to ReFS blockclone?
Since Veeam Backup & Replication 9.5 became available and people are using the ReFS blockclone API, one of the most common questions has always been “how much space I’m saving? Is there any way to measure it”. Finally, there’s a way to answer to this question!