I switch the sql server resource group to the standby node , when the disk resource ready bring online in the passive node ,then occur exception. because the original dependency disk resource the drive letter is 'K:' , BUT when the disk bring online , it automatically reassign new drive letter 'H:' , So the sql server resource couldnot bring online . And After Manual modify the drive letter to 'K:' in the passive node , It Works ! So my question is why it not use the original drive letter and reassign a new one . what reasons would be cause it ? mount point ? Some log as follows:
00001cbc.000004e0::2015/03/12-14:41:11.377 WARN [RES] Physical Disk <FltLowestPrice_K>: OnlineThread: Failed to set volguid \??\Volume{e32c13d5-02e6-4924-a2d9-59a6fae1a1be}. Error: 183.
00001cbc.000004e0::2015/03/12-14:41:11.377 INFO [RES] Physical Disk <FltLowestPrice_K>: Found 2 mount points for device \Device\Harddisk8\Partition2
00001cbc.00001cdc::2015/03/12-14:41:11.377 INFO [RES] Physical Disk: PNP: Update volume exit, status 1168
00001cbc.00001cdc::2015/03/12-14:41:11.377 INFO [RES] Physical Disk: PNP: Updating volume
\\?\STORAGE#Volume#{1a8ddb8e-fe43-11e2-b7c5-6c3be5a5cdca}#0000000008100000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}
00001cbc.00001cdc::2015/03/12-14:41:11.377 INFO [RES] Physical Disk: PNP: Update volume exit, status 5023
00001cbc.000004e0::2015/03/12-14:41:11.377 ERR [RES] Physical Disk: Failed to get volname for drive H:\, status 2
00001cbc.000004e0::2015/03/12-14:41:11.377 INFO [RES] Physical Disk <FltLowestPrice_K>: VolumeIsNtfs: Volume\\?\GLOBALROOT\Device\Harddisk8\Partition2\ has FS type NTFS
00001cbc.000004e0::2015/03/12-14:41:11.377 INFO [RES] Physical Disk: Volume\\?\GLOBALROOT\Device\Harddisk8\Partition2\ has FS type NTFS
00001cbc.000004e0::2015/03/12-14:41:11.377 INFO [RES] Physical Disk: MountPoint H:\ points to volume\\?\Volume{e32c13d5-02e6-4924-a2d9-59a6fae1a1be}\