YourSQLDba的共享路径备份遭遇重启问题

如果YourSQLDba设置过共享路径备份（具体参考博客YourSQLDba设置共享路径备份），有时候服务器重启后，备份就会出错，具体错误信息类似如下所示：

Date        2019/9/25 10:10:00

Log        SQL Server (Current - 2019/9/25 3:06:00)

Source        spid56

Message

BackupDiskFile::CreateMedia: Backup device 'M:\xxx\LOG_BACKUP\msdb_[2019-09-24_00h08m06_Tue]_logs.TRN' failed to create. Operating system error 3(系统找不到指定的路径。).

出现这个问题，需要使用Exec YourSQLDba.Maint.CreateNetworkDriv设置网络路径,即使之前设置过网络路径，查询[YourSQLDba].[Maint].[NetworkDrivesToSetOnStartup]表也有相关网络路径设置，但是确实需要重新设置才能消除这个错误。

EXEC sp_configure 'show advanced option', 1;

GO

RECONFIGURE;

GO

sp_configure 'xp_cmdshell', 1;

GO

RECONFIGURE;

GO

EXEC YourSQLDba.Maint.CreateNetworkDrives @DriveLetter = 'M:\',

    @unc = 'xxxxxxxxxx;

GO

sp_configure 'xp_cmdshell', 0;

GO

EXEC sp_configure 'show advanced option', 1;

GO

RECONFIGURE;

查看了一下 [Maint].[CreateNetworkDrives]存储过程，应该是重启过后，需要运行net use这样的命令进行相关配置。

USE [YourSQLDba]

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

ALTER proc [Maint].[CreateNetworkDrives] 

  @DriveLetter nvarchar(2) 

, @unc nvarchar(255) 

as

Begin

  Declare @errorN int

  Declare @cmd nvarchar(4000)

  Set nocount on

  Exec yMaint.SaveXpCmdShellStateAndAllowItTemporary 

  Set @DriveLetter=rtrim(@driveLetter)

  Set @Unc=rtrim(@Unc)

  If Len(@DriveLetter) = 1

    Set @DriveLetter = @DriveLetter + ':'

  If Len(@Unc) >= 1

  Begin

    Set @Unc = yUtl.NormalizePath(@Unc)

    Set @Unc = Stuff(@Unc, len(@Unc), 1, '')

  End

  Set @cmd = 'net use <DriveLetter> /Delete'

  Set @cmd  = Replace( @cmd, '<DriveLetter>', @DriveLetter)

  begin try 

    Print @cmd

    exec xp_cmdshell @cmd, no_output

  end try 

  begin catch 

  end catch

  -- suppress previous network drive definition

  If exists(select * from Maint.NetworkDrivesToSetOnStartup Where DriveLetter = @driveLetter)

  Begin

    Delete from Maint.NetworkDrivesToSetOnStartup Where DriveLetter = @driveLetter

  End

  Begin Try

    Set @cmd = 'net use <DriveLetter> <unc>'

    Set @cmd  = Replace( @cmd, '<DriveLetter>', @DriveLetter )

    Set @cmd  = Replace( @cmd, '<unc>', @unc )

    Print @cmd

    exec xp_cmdshell @cmd

    Insert Into Maint.NetworkDrivesToSetOnStartup (DriveLetter, Unc) Values (@DriveLetter, @unc)

    Exec yMaint.RestoreXpCmdShellState 

  End Try

  Begin Catch

    Set @errorN = ERROR_NUMBER() -- return error code

    Print convert(nvarchar, @errorN) + ': ' + ERROR_MESSAGE() 

    Exec yMaint.RestoreXpCmdShellState 

  End Catch

End -- Maint.CreateNetworkDrives