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Copy pathSQLInstance.Volumes.cs
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61 lines (56 loc) · 2.44 KB
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using System;
using System.Collections.Generic;
namespace Opserver.Data.SQL
{
public partial class SQLInstance
{
private Cache<List<VolumeInfo>> _volumes;
public Cache<List<VolumeInfo>> Volumes => _volumes ??= SqlCacheList<VolumeInfo>(10.Minutes());
public class VolumeInfo : ISQLVersioned
{
Version IMinVersioned.MinVersion => SQLServerVersions.SQL2008R2.SP1;
SQLServerEditions ISQLVersioned.SupportedEditions => SQLServerEditions.AllExceptAzure;
public string VolumeId { get; internal set; }
public string VolumeMountPoint { get; internal set; }
public string LogicalVolumeName { get; internal set; }
public string FileSystemType { get; internal set; }
public long TotalBytes { get; internal set; }
public long AvailableBytes { get; internal set; }
public long UsedBytes => TotalBytes - AvailableBytes;
public bool IsReadOnly { get; internal set; }
public bool IsCompressed { get; internal set; }
public decimal AvgReadStallMs { get; internal set; }
public decimal AvgWriteStallMs { get; internal set; }
public string GetFetchSQL(in SQLServerEngine e)
{
if (e.Edition == SQLServerEditions.Azure)
{
return EmptyRecordsetSQL;
}
return @"
Select vs.volume_mount_point VolumeMountPoint,
vs.volume_id VolumeId,
vs.logical_volume_name LogicalVolumeName,
vs.file_system_type FileSystemType,
vs.total_bytes TotalBytes,
Min(vs.available_bytes) AvailableBytes,
vs.is_read_only IsReadOnly,
vs.is_compressed IsCompressed,
CASE SUM(fs.num_of_reads) WHEN 0 THEN 0 ELSE SUM(fs.io_stall_read_ms) / (SUM(fs.num_of_reads)) END AS AvgReadStallMs,
CASE SUM(fs.num_of_writes) WHEN 0 THEN 0 ELSE SUM(fs.io_stall_write_ms) / (SUM(fs.num_of_writes)) END AS AvgWriteStallMs
From sys.dm_io_virtual_file_stats(null, null) fs
Join sys.master_files mf
On fs.database_id = mf.database_id
And fs.file_id = mf.file_id
Cross Apply sys.dm_os_volume_stats(mf.database_id, mf.file_id) vs
Group By vs.volume_mount_point,
vs.volume_id,
vs.logical_volume_name,
vs.file_system_type,
vs.total_bytes,
vs.is_read_only,
vs.is_compressed;";
}
}
}
}