两个节点的rac，出来3个asm instance的处理

srvctl modify asm -count 2

[grid@rac1 ~]$ srvctl config asm -detail
ASM home: <CRS home>
Password file: +DATA/orapwASM
Backup of Password file: +DATA/orapwASM_backup
ASM listener: LISTENER
ASM is enabled.
ASM is individually enabled on nodes: 
ASM is individually disabled on nodes: 
ASM instance count: 3
Cluster ASM listener: ASMNET1LSNR_ASM
[grid@rac1 ~]$ srvctl modify asm -count 2
[grid@rac1 ~]$ srvctl config asm -detail
ASM home: <CRS home>
Password file: +DATA/orapwASM
Backup of Password file: +DATA/orapwASM_backup
ASM listener: LISTENER
ASM is enabled.
ASM is individually enabled on nodes: 
ASM is individually disabled on nodes: 
ASM instance count: 2
Cluster ASM listener: ASMNET1LSNR_ASM
[grid@rac1 ~]$ crsctl stat res -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details       
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.LISTENER.lsnr
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.chad
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.net1.network
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
ora.ons
               ONLINE  ONLINE       rac1                     STABLE
               ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.ASMNET1LSNR_ASM.lsnr(ora.asmgroup)
      1        ONLINE  ONLINE       rac1                     STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
ora.DATA.dg(ora.asmgroup)
      1        ONLINE  ONLINE       rac1                     STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
ora.LISTENER_SCAN1.lsnr
      1        ONLINE  ONLINE       rac2                     STABLE
ora.RECO.dg(ora.asmgroup)
      1        ONLINE  ONLINE       rac1                     STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
ora.asm(ora.asmgroup)
      1        ONLINE  ONLINE       rac1                     Started,STABLE
      2        ONLINE  ONLINE       rac2                     Started,STABLE
ora.asmnet1.asmnetwork(ora.asmgroup)
      1        ONLINE  ONLINE       rac1                     STABLE
      2        ONLINE  ONLINE       rac2                     STABLE
ora.cis.db
      1        ONLINE  ONLINE       rac1                     Open,HOME=/oracle/ap
                                                             p/oracle/product/19c
                                                             /dbhome_1,STABLE
      2        ONLINE  ONLINE       rac2                     Open,HOME=/oracle/ap
                                                             p/oracle/product/19c
                                                             /dbhome_1,STABLE
ora.cvu
      1        ONLINE  ONLINE       rac2                     STABLE
ora.qosmserver
      1        ONLINE  ONLINE       rac2                     STABLE
ora.rac1.vip
      1        ONLINE  ONLINE       rac1                     STABLE
ora.rac2.vip
      1        ONLINE  ONLINE       rac2                     STABLE
ora.scan1.vip
      1        ONLINE  ONLINE       rac2                     STABLE
--------------------------------------------------------------------------------
[grid@rac1 ~]$ asmcmd showclustermode
ASM cluster : Flex mode enabled - Direct Storage Access
[grid@rac1 ~]$ asmcmd showclusterstate
Normal
[grid@rac1 ~]$ srvctl config asm
ASM home: <CRS home>
Password file: +DATA/orapwASM
Backup of Password file: +DATA/orapwASM_backup
ASM listener: LISTENER
ASM instance count: 2
Cluster ASM listener: ASMNET1LSNR_ASM
[grid@rac1 ~]$ srvctl status asm -detail
ASM is running on rac1,rac2
ASM is enabled.
ASM instance +ASM1 is running on node rac1
Number of connected clients: 2
Client names: cis1:cis:rac-cluster rac1:_OCR:rac-cluster
ASM instance +ASM2 is running on node rac2
Number of connected clients: 2
Client names: cis2:cis:rac-cluster rac2:_OCR:rac-cluster

相关参考：
https://www.modb.pro/db/55462
https://www.cnblogs.com/zylong-sys/p/12044285.html