ACFS VOLUME SIZE MISMATCH BETWEEN V$ASM_ACFSVOLUMES AND OS DIRECTORY PROPERTY (Doc ID 1529693.1)

Last updated on OCTOBER 31, 2016

Applies to:

Oracle Database - Standard Edition - Version 11.2.0.1 and later
Microsoft Windows x64 (64-bit) - Version: 2008 R2

Symptoms

You can see conflicting data regarding the amount of space being used by and ACFS file system.  
The ACFS is configured on a Windows 2008 r2 RAC 11g system.
It is presented to the Windows operating system, and is displayed as E:\ServiceLayer.

For this customer viewing the ACFS data via acfsutil / V$ASM_ACFSVOLUMES / OEM ,  observed that
the volume is reporting usage of 2.3gb (2270 MB aprox) and free 0.78 gb (802 MB aprox), total size 3gb.


SQL> select * from V$ASM_ACFSVOLUMES;

FS_NAME             VOL_DEVICE                 PRIMA     TOTAL_MB FREE_MB
E:\SERVICELAYER     \\.\asm-srv_lyr_01-68     TRUE     3072 801.953125


SQL> select * from V$ASM_FILESYSTEM;

FS_NAME             BLOCK_SIZE     STATE         CORRU NUM_VOL     TOTAL_SIZE     TOTAL_FREE     TOTAL_SNAP_SPACE_USAGE
E:\SERVICELAYER     4             AVAILABLE     FALSE 1         3072         801.957031     0


ACFSUTIL Output from Server 1a
C:\Windows\system32>E:\app\11.2.0\grid\BIN\acfsutil info fs E:\ServiceLayer
E:\ServiceLayer
   ACFS Version: 11.2.0.3.0
   flags:        MountPoint,Available
   mount time:   Tue Dec 18 17:52:58 2012
   volumes:      1
   total size:   3221225472
   total free:   841437184
   primary volume: asm-srv_lyr_01-68
       label:
       flags:                 Primary,Available,ADVM
       on-disk version:       39.0
       allocation unit:       4096
       size:                  3221225472
       free:                  841445376
       ADVM diskgroup         DATA
       ADVM resize increment: 33554432
       ADVM redundancy:       unprotected
       ADVM stripe columns:   4
       ADVM stripe width:     131072
   number of snapshots:  0
   snapshot space usage: 0
   replication status: DISABLED
   
   
OEM screen output also matching with the output of v$views and acfsutil output:

Volume: asm-srv_lyr_01-68
Size(GB) : 3
Used(GB) : 2.22
Free(GB) : 0.78
Used(%) : 73.89
Allocated Space(GB): 3
Space Used by snapshots(MB):0.0

 


However, viewing the properties of the folder on the windows system it is only reporting a size of only 972MB.

Right click property of directory E:\ServiceLayer:

SIZE : 848 MB
SIZE on DISK: 972 MB



Cause

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