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When the new Ubuntu 22.04 system was released at the end of April, curiosity led me to choose the ZFS file system. I had heard of ZFS before, but later, when I installed the updated Linux kernel DEB package myself, I found that the system wouldn't boot. I was a little panicked because the ZFS file system wasn't recognized. I had no choice but to search online. It turned out that due to open source licensing issues, the kernel doesn't include a corresponding ZFS processing module like ext4. If there was a dispute, Oracle's lawyers would send a letter. Without further ado, since Ubuntu officially provides a corresponding file system option, and BSD and other systems also use the ZFS file system, it must have its unique advantages. For the poor, the ZFS snapshot feature is definitely practical. The test process is as follows: LVS deployment