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
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