Volume Name: ACFS_VOL2
Volume Device: /dev/asm/acfs_vol2-10
State: ENABLED
Size (MB): 1024
Resize Unit (MB): 32
Redundancy: MIRROR
Stripe Columns: 4
Stripe Width (K): 128
Usage:
Mountpath:
Volume Name: ACFS_VOL3
Volume Device: /dev/asm/acfs_vol3-10
State: ENABLED
Size (MB): 1024
Resize Unit (MB): 32
Redundancy: MIRROR
Stripe Columns: 4
Stripe Width (K): 128
Usage:
Mountpath:
在volume创建这后会自动被启用。当服务器重启之后可能需要手动加载ADVM/ACFS驱动(acfsload start)并启用volume(asmcmd volenable -a)。
对于每个volume，ASM将创建一个volume file。在冗余磁盘组中，每个卷将有一个dirty region logging(DRL)文件
SQL> select file_number "File#", volume_name "Volume", volume_device "Device", size_mb "MB", drl_file_number "DRL#" from v$asm_volume;
File# Volume Device MB DRL#
----- ---------------------------------------- ---------------------------------------- ---------- ----------
257 ACFS_VOL1 /dev/asm/acfs_vol1-10 1024 256
259 ACFS_VOL2 /dev/asm/acfs_vol2-10 1024 258
261 ACFS_VOL3 /dev/asm/acfs_vol3-10 1024 260
除了卷名，设备名与大小之外，还显示了ASM文件号257,259,261给卷设备使用，ASM文件号256,258,260给DRL文件使用。
查询卷文件的AU分布情况
SQL> select
2 xnum_kffxp, -- virtual extent number
3 pxn_kffxp, -- physical extent number
4 disk_kffxp, -- disk number
5 au_kffxp -- allocation unit number
6 from x$kffxp
7 where number_kffxp=261-- asm file 256
8 and group_kffxp=4 -- group number 1
9 order by 1,2,3;
XNUM_KFFXP PXN_KFFXP DISK_KFFXP AU_KFFXP
---------- ---------- ---------- ----------
0 0 0 2160
0 1 1 2160
1 2 1 2168
1 3 0 2168
2 4 0 2176
2 5 1 2176
3 6 1 2184
3 7 0 2184
4 8 0 2192
4 9 1 2192
5 10 1 2200
5 11 0 2200
6 12 0 2208
6 13 1 2208
......