Facing problem when attempting to recover the file in the tgt shared directory without the remount operation

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Hi
  I have met a problem currently when attempting to recovery the file in the tgt shared directory without the remount operation。

Here is the detailed steps:
1、 using XFS to create two files: file1 & file2 in the mounted directory(for example /home/aaa/)
2、 create a snap of the rbd named as snap1
3、 delete file1 & file2 in /home/aaa/
4、 rollback of rbd by snap1
5、 input “ls” in /home/aaa/
6、 no results shown
7、 if I remount the shared disks to /home/aaa/, file1 & file2 will be shown in the /home/aaa/,

My question:
Are there any methods to show the updated file information in the shared directory without using the remount operation, thanks!

The iscsi-target protocol diagram:
                                  CLIENT                                                                                         server
|----------------------------------------------------------------------|                                |-----------------------------------------------|
|         /home/aaa/                                                               |                                |                                                               |
|             XFS--------------   iSCSI-Initiator -------------------- |------------------------|--------ISCSI-target---------------rbd      |
|________________________________________|                                |___________________________|



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