"Home Only" details in SFAOS

“home only” means that the virtual disk will only be presented to the ports belonging to the RP/Controller for that virtual disk.

 

For example, 

                                                               |      Home       |Background|

Idx|Name            | State  |Pool|Raid|Cap GB|Settings| Jobs  |Current|Preferred|   Job    |

--------------------------------------------------------------------------------------------->/font>

  0 vd-0_0           READY       0  6     7224   W M I           0(R) 0   0(R) 0   INACTIVE  

  1 vd-1_1           READY       1  6     7224   W M I           0(R) 1   0(R) 1   INACTIVE  

  2 vd-2_2           READY       2  6     7224   W M I           1(L) 0   1(L) 0   INACTIVE  

  3 vd-3_7           READY       7  6     7224   W M I           1(L) 1   1(L) 1   INACTIVE  

  4 vd-4_8           READY       8  6     7224   W M I           0(R) 0   0(R) 0   INACTIVE  

  5 vd-5_9           READY       9  6     7224   W M I           0(R) 1   0(R) 1   INACTIVE  

 

In the Home/Current|Preferred columns you get the “Preferred Path” of each virtual disk. 

 

0(R) 0: This means…first number, controller ID, (R) is remote controller, relative to which controller you are logged on, second number is RP.

 

Therefore, vd-0_0, preferred home/path is controller 0, RP 0. If you were to turn on “Home Only”, the virtual disk will only be seen by initiators that are connected or have access to the host ports that belong to C0-RP0.

 

 

                                                                            |          Enabled Channels         |            |            |

Pres. | Host                            | Host  |  VD   |     | Home | Read |      Ctrl 0     |      Ctrl 1     |            |    Child   |

Index | Name                            | Index | Index | LUN | Only | Only |  RP 0  |  RP 1  |  RP 0  |  RP 1  |Fault Status|Fault Status|

-------------------------------------------------------------------------------------------------------------------------------------------

00000   VD presented to all hosts         ALL     00000   000   OFF    R/W   01234567 01234567 01234567 01234567 OK           OK          

00001   VD presented to all hosts         ALL     00001   001   OFF    R/W   01234567 01234567 01234567 01234567 OK           OK          

00002   VD presented to all hosts         ALL     00002   002   OFF    R/W   01234567 01234567 01234567 01234567 OK           OK          

00003   VD presented to all hosts         ALL     00003   003   OFF    R/W   01234567 01234567 01234567 01234567 OK           OK          

00004   VD presented to all hosts         ALL     00004   004   OFF    R/W   01234567 01234567 01234567 01234567 OK           OK          

00005   VD presented to all hosts         ALL     00005   005   OFF    R/W   01234567 01234567 01234567 01234567 OK           OK          

 

So if Home Only is ON for VD 0 above, then only the initiators below that are seen by Controller 0/RP 0 will see this virtual disk.

 

                      |        Initiator Identifier         |          Controller 0         |          Controller 1          |

Index | Type |   ID   |       node       |       port       |      RP 0     |      RP 1     |      RP 0     |       RP 1     |

------------------------------------------------------------------------------------------------------------------------------

00204   FC    0x01a600 0x2000000e1e09ec98 0x2100000e1e09ec98                |            6  |               |            6  

00205   FC    0x01a600 0x2000000e1e09ec99 0x2100000e1e09ec99                |              7|               |              7

00456   FC    0x019400 0x20000024ff8ce5bc 0x21000024ff8ce5bc 0              |               |0              |               

00501   FC    0x010e00 0x20000024ff4beea0 0x21000024ff4beea0                |        4      |               |        4      

00503   FC    0x010e00 0x20000024ff4beea1 0x21000024ff4beea1                |          5    |               |          5    

00509   FC    0x019500 0x20000024ff8ce4df 0x21000024ff8ce4df   1            |               |  1            |               

00510   FC    0x019400 0x20000024ff8ce5bd 0x21000024ff8ce5bd   1            |               |  1            |               

00511   FC    0x019500 0x20000024ff8ce4de 0x21000024ff8ce4de 0              |               |0              |               

00532   FC    0x010b00 0x20000024ff2e0ee7 0x21000024ff2e0ee7       3        |               |      3        |               

00535   FC    0x010700 0x20000024ff2ed304 0x21000024ff2ed304     2          |               |    2          |               

00536   FC    0x010700 0x20000024ff2ed305 0x21000024ff2ed305       3        |               |      3        |               

 

This is most likely not what you want because you notice that Initiator #204 is not even connected to C0-RP0, therefore if it’s doing IO to the SFA on VD 0, there will be problems because it will no longer see VD 0 once Home Only is set.