chore: docs update for dataDir
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@ -142,6 +142,15 @@ The parameters described in this document by the effect that they have on the sy
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| Meaning | Switch for allowing TDengine to collect and report service usage information |
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| Meaning | Switch for allowing TDengine to collect and report service usage information |
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| Value Range | 0: Not allowed; 1: Allowed |
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| Value Range | 0: Not allowed; 1: Allowed |
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| Default Value | 1 |
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| Default Value | 1 |
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### crashReporting
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| Attribute | Description |
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| -------- | -------------------------------------------- |
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| Applicable | Server Only |
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| Meaning |Switch for allowing TDengine to collect and report crash related information |
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| Value Range | 0,1 0: Not allowed;1:allowed |
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| Default Value | 1 |
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## Query Parameters
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## Query Parameters
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@ -315,37 +324,6 @@ The charset that takes effect is UTF-8.
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| Meaning | All data files are stored in this directory |
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| Meaning | All data files are stored in this directory |
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| Default Value | /var/lib/taos |
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| Default Value | /var/lib/taos |
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:::info
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The official version supports multi-tier storage (need to cooperate with [KEEP parameter](https://docs.tdengine.com/taos-sql/database/#create-a-database)). The configuration method is as follows.
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The multi-tier storage directory is configured through `dataDir`, the format is: `dataDir [path] <level> <primary>`
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```
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dataDir: Configuration items in the configuration file (`taos.cfg`)
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path: the directory to mount (cannot be omitted)
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level: mount level, the value is 0, 1 or 2, if omitted, the default is 0. Up to 3 levels are supported, and each level supports up to 16 mount points, so a maximum of 48 mount points are supported.
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primary: whether it is the primary mount point, 0 (no) or 1 (yes), the default is 1. The primary mount point is only allowed at level 0, and only one primary mount point is allowed (level=0, primary=1).
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```
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Here is a normal configuration (3 storage tiers, each with 3 mount points):
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```
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Data directory /mnt/data01 0 1
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Data directory /mnt/data02 0 0
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Data directory /mnt/data03 0 0
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Data directory /mnt/data10 1 0
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Data directory /mnt/data11 1 0
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Data directory /mnt/data12 1 0
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Data directory /mnt/data20 2 0
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Data directory /mnt/data21 2 0
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Data directory /mnt/data22 2 0
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```
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The community version does not support multi-tier storage, and the following three configurations are acceptable:
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```
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Data directory /var/lib/taos
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or dataDir /var/lib/taos 0
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or dataDir /var/lib/taos 0 1
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```
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:::
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### tempDir
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### tempDir
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| Attribute | Description |
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| Attribute | Description |
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@ -306,7 +306,7 @@ charset 的有效值是 UTF-8。
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| 含义 | 数据文件目录,所有的数据文件都将写入该目录 |
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| 含义 | 数据文件目录,所有的数据文件都将写入该目录 |
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| 缺省值 | /var/lib/taos |
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| 缺省值 | /var/lib/taos |
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:::info
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企业版支持多级存储 (需要与[KEEP 参数](https://docs.taosdata.com/taos-sql/database/#%E5%88%9B%E5%BB%BA%E6%95%B0%E6%8D%AE%E5%BA%93)配合使用). 配置方法如下。
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企业版支持多级存储 (需要与[KEEP 参数](https://docs.taosdata.com/taos-sql/database/#%E5%88%9B%E5%BB%BA%E6%95%B0%E6%8D%AE%E5%BA%93)配合使用). 配置方法如下。
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多级存储目录通过 dataDir 配置。配置项格式: dataDir [path] <level> <primary>
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多级存储目录通过 dataDir 配置。配置项格式: dataDir [path] <level> <primary>
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