Dynamically Assigning a Physical Adapter to an LPAR (with DLPAR)

 

1.    Before attempting DLPAR, confirm that the Save configuration changes to profile attribute is set to Enabled for the LPAR (or VIOS). This will ensure that any changes to the LPAR profile, such as adding a new physical adapter, are saved to the LPAR default profile. If this is not enabled any DLPAR changes may be lost the next time the LPAR (or VIOS) is restarted from their default profile.

You’ll find this attribute in the General section, under Advanced Settings, for the LPAR (or VIOS).

 

 

2.    Check that the LPAR (or VIOS) has an active RMC connection with the HMC. DLPAR will not function without an active RMC connection.

A screenshot of a computer AI-generated content may be incorrect.

3.    List the adapters currently assigned to the LPAR (in this case a VIOS).

 

[padmin@sys851-vios1]$ lsdev -type adapter | grep fcs

fcs0             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

fcs1             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

4.    From the HMC UI, select the LPAR to which that you wish to dynamically assign the physical adapter. Select Physical I/O adapters. Select Add Adapter, e.g.

 

 

5.    Select the physical adapter you wish to dynamically assign to the LPAR (or VIOS). e.g.

 

6.    Select Save. It may take a few minutes for the adapter to be assigned with DLPAR.

 

7.    List the adapters currently assigned to the LPAR (or VIOS). Note: The VIOS will automatically configure the adapters to the OS without the need to run cfgdev/cfgmgr.

 

[padmin@sys851-vios1]$ lsdev -type adapter | grep fcs

fcs0             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

fcs1             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

fcs2             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

fcs3             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

 

[padmin@sys851-vios1]$ lsdev -dev fcs2 -vpd | grep fcs

  fcs2             U78CB.001.WZS0638-P1-C3-T1  8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)

[padmin@sys851-vios1]$ lsdev -dev fcs3 -vpd | grep fcs

  fcs3             U78CB.001.WZS0638-P1-C3-T2  8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)