SQLServer2005 采用xp_fixeddrives+xp_cmdshell获取获取磁盘信息

关键字

SQLServer2005 xp_fixeddrives xp_cmdshell

概述：

目标数据库为sqlserver，在进行etl数据采集过程中，会产生大量的数据与日志，如果磁盘空间不足，将严重影响etl传输效率，本文讲解如何通过xp_fixeddrives+xp_cmdshell获取获取磁盘信息。
当需要维护的sqlserver服务器较多时，可以通过etl将各服务器的磁盘信息抓取到独立的监控服务器上进行分析。

脚本

--==================================
/*
sqlserver2005 启用xp_cmdshell，首先需要在master数据库中执行如下命令：
*/
use master;

-- 启用xp_cmdshell命令：
RECONFIGURE WITH override;
EXEC sp_configure 'show advanced options',1;
RECONFIGURE WITH override;
EXEC sp_configure 'xp_cmdshell',1;
RECONFIGURE WITH override

-- 如果需要禁用xp_cmdshell，执行如下命令：
RECONFIGURE WITH override;
EXEC sp_configure 'xp_cmdshell',0;
RECONFIGURE WITH override;
EXEC  sp_configure 'show advanced options',1;
RECONFIGURE WITH override;

/*
在业务库中执行如下命令，创建存储过程：
*/
-- =============================================
-- Author:        hury
-- Create date:    2019-09-26 09:28:50
-- Description:    收集磁盘剩余空间信息
-- =============================================
CREATE PROCEDURE [dbo].[usp_get_disk_free_size]
AS
BEGIN
    SET NOCOUNT ON;
    SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;

--==========================================
--创建相关表

	IF OBJECT_ID('server_disk_usage') IS NULL
	BEGIN
		CREATE TABLE [dbo].[server_disk_usage](
			[disk_num] [nvarchar](10) NOT NULL,
			[total_size_mb] [bigint] NOT NULL CONSTRAINT [DF_server_disk_usage_total_size_mb]  DEFAULT ((0)),
			[free_siez_mb] [bigint] NOT NULL CONSTRAINT [DF_server_disk_usage_free_siez_mb]  DEFAULT ((0)),
			[disk_info] [nvarchar](400) NOT NULL CONSTRAINT [DF_server_disk_usage_disk_info]  DEFAULT (''),
			[check_time] [datetime] NOT NULL CONSTRAINT [DF_server_disk_usage_check_time]  DEFAULT (getdate()),
			 CONSTRAINT [PK_server_disk_usage] PRIMARY KEY CLUSTERED 
			(
				[disk_num] ASC
			)
		) ON [PRIMARY]
	END


--==========================================
--查看所有数据库使用到的磁盘剩余空间
	DECLARE @disk TABLE(
			[disk_num] VARCHAR(50),
			[free_siez_mb] INT)
	INSERT INTO @disk
	EXEC xp_fixeddrives

	--更新当前磁盘的剩余空间信息
	UPDATE M
	SET M.[free_siez_mb]=D.[free_siez_mb]
	FROM [dbo].[server_disk_usage] AS M
	INNER JOIN @disk AS D
	ON M.[disk_num]=D.[disk_num]

	--插入新增磁盘的剩余空间信息
	INSERT INTO [dbo].[server_disk_usage]
	(
		[disk_num],
		[free_siez_mb]
	)
	SELECT 
	[disk_num],
	[free_siez_mb]
	FROM @disk AS D
	WHERE NOT EXISTS(
		SELECT 1
		FROM [dbo].[server_disk_usage] AS M 
		WHERE M.[disk_num]=D.[disk_num] )

	END
GO

-- =============================================
-- Author:        hury
-- Create date:    2019-09-26 09:28:50
-- Description:    收集磁盘总空间信息
-- =============================================
CREATE PROCEDURE [dbo].[usp_get_disk_total_size]
AS
BEGIN
    SET NOCOUNT ON;
    SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
    
	IF NOT EXISTS(SELECT * FROM [dbo].[server_disk_usage]
			WHERE [total_size_mb] = 0)
	BEGIN
		RETURN;
	END

--========================================
--创建临时表用来存放每个盘符的数据
	CREATE TABLE #tempDisks
	(
		ID INT IDENTITY(1,1),
		DiskSpace NVARCHAR(200)
	)
--============================================
--将需要检查的磁盘放入临时表#checkDisks
	SELECT 
	ROW_NUMBER()OVER(ORDER BY [disk_num]) AS RID,
	[disk_num]
	INTO #checkDisks
	FROM [dbo].[server_disk_usage] 
	WHERE [total_size_mb] = 0;

--============================================
--循环临时表#checkDisks检查每个磁盘的总量

	DECLARE @disk_num NVARCHAR(20)
	DECLARE @total_size_mb INT
	DECLARE @sql NVARCHAR(200)
	DECLARE @max INT
	DECLARE @min INT
	SELECT @max=MAX(RID),@min=MIN(RID) FROM #checkDisks

	WHILE(@min<=@max)
	BEGIN
		SELECT @disk_num=[disk_num] 
		FROM #checkDisks WHERE RID=@min

		SET @sql = N'EXEC sys.xp_cmdshell ''fsutil volume diskfree '+@disk_num+':'+''''
		PRINT @sql

		INSERT INTO #tempDisks
		EXEC sys.sp_executesql @sql

		SELECT  @total_size_mb=CAST((RIGHT(DiskSpace,LEN(DiskSpace)
			-CHARINDEX(': ',DiskSpace)-1)) AS BIGINT)/1024/1024
		FROM #tempDisks WHERE id = 2

		-- SELECT @total_size_mb,@disk_num

		UPDATE [dbo].[server_disk_usage]
		SET [total_size_mb]=@total_size_mb
		WHERE [disk_num]=@disk_num

		--SELECT * FROM  #tempDisks

		TRUNCATE TABLE #tempDisks

		SET @min=@min+1

	END
END

GO

-- =============================================
-- Author:        hury
-- Create date:    2019-09-26 09:28:50
-- Description:    收集磁盘总空间信息
-- =============================================
CREATE PROCEDURE [dbo].[usp_get_disk_usage]
AS
BEGIN
    SET NOCOUNT ON;
    SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
    
    EXEC [dbo].[usp_get_disk_free_size]
    EXEC [dbo].[usp_get_disk_total_size]
END
GO

--==================================
/*
执行收集磁盘总空间信息
*/
EXEC [dbo].[usp_get_disk_usage]

/*
获取磁盘容量信息
*/
SELECT [disk_num] AS name
	, CAST([total_size_mb]/1024.0 AS NUMERIC(18,2)) AS max_size_g
	, CAST(([total_size_mb]-[free_siez_mb])/1024.0 AS NUMERIC(18,2)) AS Used_Space_GB
	, CAST([free_siez_mb]/1024.0 AS NUMERIC(18,2)) AS free_size_g
	, CAST([free_siez_mb]*100/[total_size_mb] AS NUMERIC(18,2)) AS Free_Space_Percent
	, [check_time]
FROM [dbo].[server_disk_usage]

执行结果：

–END–