不能為 EXTERNAL REDUNDANCY的磁碟組新增failgroup disk
ASMCMD> lsdg -cgH dgroup1
2 MOUNTED EXTERN N 512 4096 1048576 3057 1817 0 1817 0 DGROUP1/
1 MOUNTED EXTERN N 512 4096 1048576 3057 1817 0 1817 0 DGROUP1/
SQL> select group_number,name,FAILGROUP,REDUNDANCY from v$asm_disk;
GROUP_NUMBER NAME FAILGROUP
------------ ------------------------------ ------------------------------
REDUNDA
-------
0
UNKNOWN
1 DGROUP1_0000 DGROUP1_0000
UNKNOWN
1 DGROUP1_0001 DGROUP1_0001
UNKNOWN
GROUP_NUMBER NAME FAILGROUP
------------ ------------------------------ ------------------------------
REDUNDA
-------
1 DGROUP1_0002 DGROUP1_0002
UNKNOWN
SQL> alter diskgroup dgroup1 add failgroup DGROUP1_0000 disk '/dev/oracleasm/disks/VOL4';
alter diskgroup dgroup1 add failgroup DGROUP1_0000 disk '/dev/oracleasm/disks/VOL4'
*
ERROR at line 1:
ORA-15067: command or option incompatible with diskgroup redundancy
:~> oerr ora 15067
15067, 00000, "command or option incompatible with diskgroup redundancy"
// *Cause: An attempt was made to use a feature which is not
// permitted by the diskgroup's redundancy policy. Common examples
// are forcibly dropping a disk from an EXTERNAL REDUNDANCY diskgroup,
// using the FAILGROUP clauses with an EXTERNAL REDUNDANCY diskgroup,
// or using invalid template attributes.
// *Action: Omit the option from the command.
如果一開始建立的diskgroup是預設的external redundancy, 那在以後是不能往failgroup中新增磁碟的.
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