Effectively, RDMA allows a member's agent to simply perform what appears to be a local memory copy operation, when in fact the target is the memory address of a remote machine.
RD ma有效地使成员的代理只需执行看似本地内存复制的操作，而此时的实际目标是远程计算机的内存地址。
Cannot determine local file size. You may not have permission to perform the operation. Aborting the file copy operation.
无法检测目标文件的大小，你可能没有权限执行这个操作，在拷贝文件时异常退出。
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