Empty ASM Disk command on ORACLE RAC reinstallation

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[[Email protected]~]# fdisk-l (view partition status)

Disk/dev/sda:107.4 GB, 107374182400 bytes, 209.7152 million sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

Disk label Type: dos

Disk identifier: 0X0002846D

Device Boot Start End Blocks Id System

/DEV/SDA1 * 2048 411647 204800 83Linux

/dev/sda2 411648 189171711 94380032 8e Linux LVM

Disk/dev/sdb:21.5 GB, 21474836480 bytes, 41,943,040 sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

Disk/dev/sdc:21.5 GB, 21474836480 bytes, 41,943,040 sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

Disk/dev/sdd:5368 MB, 5368709120 bytes, 10,485,760 sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

Disk label Type: dos

Disk identifier: 0XB67E75B5

Device Boot Start End Blocks Id System

/DEV/SDD1 2048 10485759 5241856-up Linux

Disk/dev/sde:5368 MB, 5368709120 bytes, 10,485,760 sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

Disk label Type: dos

Disk identifier: 0xfec13893

Device Boot Start End Blocks Id System

/dev/sde1 2048 10485759 5241856 83Linux

Disk/dev/mapper/ol-root:85.9 GB, 85899345920 bytes, 167,772,160 sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

Disk/dev/mapper/ol-swap:10.7 GB, 10737418240 bytes, 20,971,520 sectors

Units = Sector of 1 * bytes

Sector size (logical/Physical): 512 Bytes/512 bytes

I/o size (min/best): 512 Bytes/512 bytes

[Email protected] ~]#/tmp/cvu_12.2.0.1.0_oracle/runfixup.sh

All fix-up operations were completed successfully.

Where the plus red part is my ASM disk group

To clear the ASM Disk Group command:

[[email protected] ~]# dd If=/dev/zero of=/dev/sdb bs=1024 count=512

Recorded 512+0 read-in

Recorded the writing of 512+0.

524288 bytes (524 kB) Replicated, 0.0774822 sec, 6.8 mb/sec

[[Email protected]~]# dd If=/dev/zero OF=/DEV/SDC bs=1024 count=512

Recorded 512+0 read-in

Recorded the writing of 512+0.

524288 bytes (524 kB) Replicated, 0.0776111 sec, 6.8 mb/sec

Empty ASM Disk command on ORACLE RAC reinstallation