The Cluster service in Windows 2000 includes enhanced disk resource private properties. Some of these enhancements provide you better control over when Chkdsk is run against a shared drive.
When you run a command to display the private properties of the Physical Disk resource type named “Disk Q:” in Cluster Administrator, the output in Windows NT 4.0 is different from Windows 2000. The command is:
cluster clustername res “Disk Q:” /priv
The output is as follows:
Windows NT 4.0
Private properties for Physical Disk Resource 'Disk Q:':
R Name Value
- -------------------------------- -----------------------
Signature 1415371731 (0x545cdbd3)
DiskInfo
Windows 2000
Private properties for Physical Disk Resource 'Disk Q:':
T Resource Name Value
-- ----------- ---------------------- --------------------
D Disk Q: Signature 1415371731 (0x545cdbd3)
D Disk Q: SkipChkdsk 0 (0x0)
D Disk Q: ConditionalMount 1 (0x1)
B Disk Q: DiskInfo 03 00 00 00 ... (264 bytes)
B Disk Q: MountVolumeInfo D3 DB 5C 54 ... (104 bytes)
New private properties that are introduced in Windows 2000 are:
SkipChkdsk
ConditionalMount
MountVolumeInfo
The behavior of Chkdsk depends on the values that are assigned to the SkipChkdsk and ConditionalMount properties. If the disk is found to be corrupted by checking the dirty bit, or, in the case of the quorum disk, if the MSCS folder is inaccessible, Chkdsk behaves as follows on cluster disk resources.
Table 7
Registry key
|
Description
|
SkipChkdsk = 1
|
The Cluster service does not run Chkdsk against the dirty drive and mounts the drive for immediate use.
Note SkipCHKDSK = 1 overrides the ConditionalMount setting, and the Cluster service behaves the same no matter what the ConditionalMount property is set to.
|
SkipChkdsk = 0 and ConditionalMount = 0
|
The Cluster service puts the disk resource in a failed state and leaves it offline.
|
SkipChkdsk = 0 and ConditionalMount = 1
|
The Cluster service runs chkdsk /f against the volume that was found to be dirty and then mounts it after it has been repaired. This is the default behavior for Windows 2000 server clusters and the only behavior for Windows NT 4.0 server clusters.
|
You can modify these resource private properties by using the following commands:
cluster cluster_name res “Disk Q:” /priv SkipChkdsk=0[1]
cluster cluster_name res “Disk Q:” /priv ConditionalMount=0[1]
| 