Debugging ACFS mount errors: ACFS-02017

Resource status after ACFS mount fails with ACFS-02017

[root@gract2 ~]#  mount -t acfs /dev/asm/acfs_vol1-443 /u01/acfs/acfs-vol1
mount.acfs: CLSU-00100: operating system function: open64 failed with error data: 2
mount.acfs: CLSU-00101: operating system error message: No such file or directory
mount.acfs: CLSU-00103: error location: OOF_1
mount.acfs: CLSU-00104: additional error information: open64 (/dev/asm/acfs_vol1-443)
mount.acfs: ACFS-02017: Failed to open volume /dev/asm/acfs_vol1-443. Verify the volume exists.

[root@gract1 var]# crs 
*****  Local Resources: *****
Rescource NAME                 TARGET     STATE           SERVER       STATE_DETAILS                       
-------------------------      ---------- ----------      ------------ ------------------                  
ora.ACFS_DG1.ACFS_VOL1.advm    ONLINE     ONLINE          gract1       Volume device /dev/a sm/acfs_vol1-443 isonline,STABLE
ora.ACFS_DG1.ACFS_VOL1.advm    ONLINE     OFFLINE         gract2       STABLE   
ora.ACFS_DG1.ACFS_VOL1.advm    ONLINE     ONLINE          gract3       Volume device /dev/a sm/acfs_vol1-443 isonline,STABLE

[grid@gract2 ~]$  asmcmd  volinfo --all
ASMCMD-9470: ASM proxy instance unavailable
ASMCMD-9473: volume STATE will show as REMOTE
Diskgroup Name: ACFS_DG1
	 Volume Name: ACFS_VOL1
	 Volume Device: UNKNOWN
	 State: DISABLED
	 Size (MB): 800
	 Resize Unit (MB): 32
	 Redundancy: HIGH
	 Stripe Columns: 4
	 Stripe Width (K): 128
	 Usage: ACFS
	 Mountpath: /u01/acfs/acfs-vol1

If your proxy server is up and running Enable the Volumne by running an try to mount your ACFS fs
ASMCMD> volenable -a

If your proxy server is not running continue reading
[root@gract1 Desktop]#  crs | egrep 'advm|acfs|--|STAT'
Rescource NAME                 TARGET     STATE           SERVER       STATE_DETAILS                       
-------------------------      ---------- ----------      ------------ ------------------                  
ora.ACFS_DG1.ACFS_VOL1.advm    ONLINE     ONLINE          gract1       Volume device /dev/a sm/acfs_vol1-443 isonline,STABLE
ora.ACFS_DG1.ACFS_VOL1.advm    ONLINE     OFFLINE         gract2       STABLE   
ora.ACFS_DG1.ACFS_VOL1.advm    ONLINE     ONLINE          gract3       Volume device /dev/a sm/acfs_vol1-443 isonline,STABLE
ora.acfs_dg1.acfs_vol1.acfs    ONLINE     ONLINE          gract1       mounted on /u01/acfs /acfs-vol1,STABLE
ora.acfs_dg1.acfs_vol1.acfs    ONLINE     OFFLINE         gract2       STABLE   
ora.acfs_dg1.acfs_vol1.acfs    ONLINE     ONLINE          gract3       mounted on /u01/acfs /acfs-vol1,STABLE
ora.proxy_advm                 ONLINE     ONLINE          gract1       STABLE   
ora.proxy_advm                 ONLINE     OFFLINE         gract2       STABLE   
ora.proxy_advm                 ONLINE     ONLINE          gract3       STABLE   
--> ADVM PROXY server on gract2 is OFFILINE