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BR: fix a title with bracket #3442

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Jun 2, 2020
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BR: fix a title with bracket #3442

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4 changes: 2 additions & 2 deletions br/backup-and-restore-faq.md
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Expand Up @@ -36,13 +36,13 @@ category: FAQ

> **注意：**
>
> 在恢复的时候也可能遇到同样的问题。BR 的恢复中，在检验读权限的时机是在第一次写入 SST 文件时，考虑到执行 DDL 的耗时，这个时刻可能会离开始运行 BR 的时间很远。
> 在恢复的时候也可能遇到同样的问题。BR 的恢复中，在检验读权限的时机是在第一次读取 SST 文件时，考虑到执行 DDL 的耗时，这个时刻可能会离开始运行 BR 的时间很远。
>
> 这样可能会出现等了很长时间之后遇到 Permission denied 错误失败的情况。
>
> 因此，最好在恢复前提前检查权限。

## BR 遇到错误信息 `Io(Os { ... })`，该如何处理？
## BR 遇到错误信息 `Io(Os...)`，该如何处理？

这类问题几乎都是 TiKV 在写盘的时候遇到的系统调用错误。检查备份目录的挂载方式和文件系统，试试看备份到其它文件夹或者其它硬盘。

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