vSAN – Which driver ESXi host is using?

Hello all,

Today, I’ll show you how to know which driver and version we are using in our ESXs.

1. Connect to the ESXi using SSH.
2. Run the following command to understand which driver host is using.
3. esxcli storage core adapter list

   1	esxcli storage core adapter list

   
   
   HBA Name Driver Link State UID Capabilities Description -------- -------------- ---------- -------------- ------------ ---------------------------------------------------------- vmhba0 megaraid_perc9 link-n/a unknown.vmhba0 (0000:0x:xx.0) LSI / Symbios Logic PERC H730 Mini

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   HBA Name Driver Link State UID Capabilities Description -------- -------------- ---------- -------------- ------------ ---------------------------------------------------------- vmhba0 megaraid_perc9 link-n/a unknown.vmhba0 (0000:0x:xx.0) LSI / Symbios Logic PERC H730 Mini

4. In our case, the host is using megaraid_perc9. This driver is not supported, so we need to disable it and enable the right one lsi_mr3. To understand which driver hosts should use, I kindly recommend (from time-to-time)  to check the vSAN adapter VMware Compatibility Guide.
5. 1- esxcli system module set --enabled=false --module=megaraid_perc9 2- esxcli system module set --enabled=true --module=lsi_mr3

   1 2	1- esxcli system module set --enabled=false --module=megaraid_perc9 2- esxcli system module set --enabled=true --module=lsi_mr3

6. Reboot the host with “Ensure Accesibility” to avoid vSAN Resyn. When the host is back in the vCenter, run the following command to see which driver viersion host is using.
7. esxcli system module get --module=lsi_mr3 Module: lsi_mr3 Module File: /usr/lib/vmware/vmkmod/lsi_mr3 License: ThirdParty:Proprietary Version: 7.700.50.00-1OEM.650.0.0.4598673 Build Type: release Provided Namespaces: Required Namespaces: com.vmware.vmkapi@v2_4_0_0 Containing VIB: lsi-mr3 VIB Acceptance Level: certified

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   esxcli system module get --module=lsi_mr3    Module: lsi_mr3    Module File: /usr/lib/vmware/vmkmod/lsi_mr3    License: ThirdParty:Proprietary    Version: 7.700.50.00-1OEM.650.0.0.4598673    Build Type: release    Provided Namespaces:    Required Namespaces: com.vmware.vmkapi@v2_4_0_0    Containing VIB: lsi-mr3    VIB Acceptance Level: certified

8. HBA Name Driver Link State UID Capabilities Description -------- -------- ---------- -------------------- ------------ ---------------------------------------------------------- vmhba0 lsi_mr3 link-n/a sas.544a84203axxxxxx (0000:02:00.0) LSI / Symbios Logic PERC H730P Mini

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   HBA Name  Driver    Link State  UID                   Capabilities  Description --------  --------  ----------  --------------------  ------------  ---------------------------------------------------------- vmhba0    lsi_mr3   link-n/a    sas.544a84203axxxxxx                (0000:02:00.0) LSI / Symbios Logic PERC H730P Mini

9. Now, host is using lsi_mr3, which is approved in the VMware Compatibility Guide.
10. The following command shows the parameters the driver is configured.
11. vmkload_mod -s lsi_mr3 vmkload_mod module information input file: /usr/lib/vmware/vmkmod/lsi_mr3 Version: 7.700.50.00-1OEM.650.0.0.4598673 Build Type: release License: Proprietary Required name-spaces: com.vmware.vmkapi#v2_4_0_0 Parameters: lb_pending_cmds: int Change raid-1 load balancing outstanding threshold.Valid Values are 1-128. Default: 4 max_msix_count: int To change MSI-X vector count. Default: No. of Physical Sockets disable_1MB_IO: int Disable 1MB IO support. Default: 0 disable_dual_qd: int Disable dual queue depths. Default: 0 class_event_print: int To print Event details. Default: 2 disable_TB_support: int Disable TB support. Default: 0 mfiDumpFailedCmd: int Hex dump of failed command in driver log max_sectors: int Maximum number of sectors per IO command

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    vmkload_mod -s lsi_mr3 vmkload_mod module information input file: /usr/lib/vmware/vmkmod/lsi_mr3 Version: 7.700.50.00-1OEM.650.0.0.4598673 Build Type: release License: Proprietary Required name-spaces:   com.vmware.vmkapi#v2_4_0_0 Parameters:   lb_pending_cmds: int     Change raid-1 load balancing outstanding threshold.Valid Values are 1-128. Default: 4   max_msix_count: int     To change MSI-X vector count. Default: No. of Physical Sockets   disable_1MB_IO: int     Disable 1MB IO support. Default: 0   disable_dual_qd: int     Disable dual queue depths. Default: 0   class_event_print: int     To print Event details. Default: 2   disable_TB_support: int     Disable TB support. Default: 0   mfiDumpFailedCmd: int     Hex dump of failed command in driver log   max_sectors: int     Maximum number of sectors per IO command

    
    

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