Backup and restore #12
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killing
reviewed
Jan 20, 2025
| If you have a lot of data, copying the whole data directory would take long. You can use rsync to do incremental backup. | ||
| ``` | ||
| rsync -az /opt/seasearch /backup/data/ | ||
| ``` |
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有两个问题：
- boltdb 应该也是用内存映射的方式实现的，所以文件的表面大小和实际大小可能相差很远。你在本地测试一下是否有这个现象。就是文件看起来有好几 GB 大，但是 du 看的话，实际磁盘大小很小。
- rsync 对于 boltdb 这样的文件，复制效果是怎样的？
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- 本地测试了一下，ls -lh 的大小和 du -sh 的大小是一致的，包括在 dev 服务器也是如此
- rsync 应该是检测文件大小和时间戳来判断是否增量复制，对于 boltdb 文件，应该是会进行全量复制
killing
reviewed
Jan 20, 2025
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