Monitoring status using mmdiag

You can use the mmdiag command to monitor AFM and AFM DR in the following ways:

  • Use the following mmdiag --afm command to display all active AFM-relationships on a gateway node:
    # mmdiag --afm

    The system displays output similar to -

    === mmdiag: afm ===
 AFM Gateway: fin23p Active

 AFM-Cache:  fileset_2 (/cache_fs0/fs2) in Device: cache_fs0
    Mode: independent-writer
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs0)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 603
 AFM-Cache:  fileset1 (/cache_fs0/fs1) in Device: cache_fs0
    Mode: single-writer
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs1)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 2
 AFM-Cache:  fileset1 (/test_cache/fs1) in Device: test_cache
    Mode: read-only
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs2)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 3
[root@fin23p ~]# mmdiag --afm -Y
mmdiag:afm_fset:HEADER:version:reserved:reserved:cacheName:cachePath:deviceName
:cacheMode:HomeNode:HomePath:filesetStatus:handlerState:cacheState:qState:qLen:qNumExec
mmdiag:afm_gw:HEADER:version:reserved:reserved:gwNode:gwActive:gwDisconn
:Recov:Resync:NodeChg:QLen:QMem:softQMem:hardQMem:pingState
mmdiag:afm_gw:0:1:::fin23p:Active::::::::
mmdiag:afm_fset:0:1:::fileset_2:/cache_fs0/fs2:cache_fs0:independent-writer
:fin21p:nfs%3A//fin21p/test_fs0/cache_fs0:Linked:Mounted:Active:Normal:0:603:
mmdiag:afm_fset:0:1:::fileset1:/cache_fs0/fs1:cache_fs0:single-writer
:fin21p:nfs%3A//fin21p/test_fs0/cache_fs1:Linked:Mounted:Active:Normal:0:2:
mmdiag:afm_fset:0:1:::fileset1:/test_cache/fs1:test_cache:read-only
:fin21p:nfs%3A//fin21p/test_fs0/cache_fs2:Linked:Mounted:Active:Normal:0:3:
  • Use the following mmdiag --afm command to display only the specified fileset's relationship:
    # mmdiag --afm fileset=cache_fs0:fileset_2

    The system displays output similar to -

     === mmdiag: afm ===
 AFM-Cache:  fileset_2 (/cache_fs0/fs2) in Device: cache_fs0
    Mode: independent-writer
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs0)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 603
[root@fin23p ~]# mmdiag --afm fset=cache_fs0:fileset_2 -Y
mmdiag:afm_fset:HEADER:version:reserved:reserved:cacheName:cachePath:deviceName
:cacheMode:HomeNode:HomePath:filesetStatus:handlerState:cacheState:qState:qLen:qNumExec
mmdiag:afm_fset:0:1:::fileset_2:/cache_fs0/fs2:cache_fs0:
independent-writer:fin21p:nfs%3A//fin21p/test_fs0/cache_fs0
:Linked:Mounted:Active:Normal:0:603:
  • Use the following mmdiag --afm command to display detailed gateway-specific attributes:
    # mmdiag --afm gw

    The system displays output similar to -

      === mmdiag: afm ===
 AFM Gateway: fin23p Active

 QLen: 0 QMem: 0 SoftQMem: 2147483648 HardQMem 5368709120
 Ping thread: Started
[root@fin23p ~]# mmdiag --afm gw -Y
mmdiag:afm_gw:HEADER:version:reserved:reserved:gwNode:gwActive:gwDisconn
:Recov:Resync:NodeChg:QLen:QMem:softQMem:hardQMem:pingState
mmdiag:afm_gw:0:1:::fin23p:Active:::::0:0:2147483648:5368709120:Started
[root@fin23p ~]#
  • Use the mmdiag --afm command to display all active filesets known to the gateway node:
    # mmdiag --afm fileset=all

    The system displays output similar to -

    === mmdiag: afm ===
 AFM-Cache:  fileset1 (/test_cache/fs1) in Device: test_cache
    Mode: read-only
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs2)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 3
 AFM-Cache:  fileset1 (/cache_fs0/fs1) in Device: cache_fs0
    Mode: single-writer
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs1)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 2
 AFM-Cache:  fileset_2 (/cache_fs0/fs2) in Device: cache_fs0
    Mode: independent-writer
    Home: fin21p (nfs://fin21p/test_fs0/cache_fs0)
    Fileset Status: Linked
	 Handler-state: Mounted
	 Cache-state: Active
	 Q-state: Normal Q-length: 0 Q-executed: 603
[root@fin23p ~]# mmdiag --afm fileset=all -Y
mmdiag:afm_fset:HEADER:version:reserved:reserved:cacheName:cachePath:deviceName
:cacheMode:HomeNode:HomePath:filesetStatus:handlerState:cacheState:qState:qLen:qNumExec
mmdiag:afm_fset:0:1:::fileset1:/test_cache/fs1:test_cache
:read-only:fin21p:nfs%3A//fin21p/test_fs0/cache_fs2
:Linked:Mounted:Active:Normal:0:3:
mmdiag:afm_fset:0:1:::fileset1:/cache_fs0/fs1:cache_fs0
:single-writer:fin21p:nfs%3A//fin21p/test_fs0/cache_fs1
:Linked:Mounted:Active:Normal:0:2:
mmdiag:afm_fset:0:1:::fileset_2:/cache_fs0/fs2:cache_fs0
:independent-writer:fin21p:nfs%3A//fin21p/test_fs0/cache_fs0
:Linked:Mounted:Active:Normal:0:603:
Parent topic: Monitoring AFM and AFM DR