Create ASM disk through DD

problem 0：raw /dev/raw/raw10 /dev/loop11 There is no raw10 Generate

After restart

Use losetup Realization linux Ordinary documents do asm disk

How to create ASM disk

ASM management

problem 1：ORA-15260: permission denied on ASM disk group

Solution ：

sqlplus / as sysasm

problem 2：ORA-15031: disk specification ‘/dev/raw/raw10’ matches no disks

[email protected]+ASM> create diskgroup xff external redundancy disk '/dev/raw/raw10';
create diskgroup xff external redundancy disk '/dev/raw/raw10'
*
ERROR at line 1:
ORA-15018: diskgroup cannot be created
ORA-15031: disk specification '/dev/raw/raw10' matches no disks
ORA-15025: could not open disk "/dev/raw/raw10"
ORA-27041: unable to open file
Linux-x86_64 Error: 13: Permission denied
Additional information: 42
Additional information: 1241279430721
Additional information: 68719476736

Solution ：

chmod 660 /dev/raw/raw1
chown oracle:dba /dev/raw/raw1

problem 3：ORA-15031: disk specification ‘/dev/raw/raw10’ matches no disks

[email protected]+ASM> create diskgroup xff external redundancy disk '/dev/raw/raw10';
create diskgroup xff external redundancy disk '/dev/raw/raw10'
*
ERROR at line 1:
ORA-15018: diskgroup cannot be created
ORA-15031: disk specification '/dev/raw/raw10' matches no disks
ORA-15014: path '/dev/raw/raw10' is not in the discovery set

Solution ：

alter system set asm_diskstring='/dev/raw/*';