在将PV分配给卷组之后，就可以创建任意大小的逻辑卷(只要不超过VG的大小)。

So after the assignment of PVs to the volume group, you can create a logical volume of any size (to the maximum of the VG size).

youdao

应该注意的是，jvm堆大小是从DataFlowEngine(执行组)进程分配的。

It should be noted that the JVM heap size is allocated from the DataFlowEngine (Execution Group) process.

youdao