引入sentinel后，客户端机器每天凌晨的读磁盘次数飙升

## 引入sentinel后，客户端机器每天凌晨的读磁盘次数飙升


如图所示，我们是13号接入的sentinel，14号凌晨0点开始每秒读盘次数开始飙升，然后我们为了验证是接入sentinel带来的问题，将第一台机器进行了回滚，结果15号凌晨该机器没有出现这种情况，所以可以确定是sentinel造成的，但为什么会产生这种现象还需要各位大佬帮忙看一下。

Start by comparing the client machine's per-second disk-read metrics before and after Sentinel was introduced, including the rollback comparison described in the report. Reproduce the midnight spike with and without Sentinel, then identify the Sentinel behavior responsible and verify that the read rate no longer rises unexpectedly.

Written by the indexing model from the issue text.