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SAN hosts and cloud clients

Use Solaris 11.4 with ONTAP

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You can use the ONTAP SAN host configuration settings to configure Solaris 11.4 with ONTAP as the target.

Install the Solaris Host Utilities

You can download the compressed file containing the Host Utilities software packages from the NetApp Support Site. After you download the file, you must extract the zip file to get the software packages you need to install the Host Utilities.

Steps

  1. Download a copy of the compressed file containing the Host Utilities from the NetApp Support Site to a directory on your host.

  2. Go to the directory containing the download.

  3. Decompress the file.

    The following example decompresses files for a SPARC system. For x86-64 platforms, use the x86/x64 package.

    gunzip netapp_solaris_host_utilities_6_2N20170913_0304_sparc.tar.gz

  4. Use the tar xvf command to extract the file.

    tar xvf netapp_solaris_host_utilities_6_2N20170913_0304_sparc.tar

  5. Add the packages that you extracted from the .tar file to your host.

    pkgadd -d NTAPSANTool.pkg

    The packages are added to the /opt/NTAP/SANToolkit/bin directory.

    To complete the installation, you must configure the host parameters for your environment (Oracle Solaris I/O Multipathing or MPxIO in this case) by using the host_config command.

    The host_config command has the following format:

    /opt/NTAP/SANToolkit/bin/host_config ←setup> ←protocol fcp|iscsi|mixed> ←multipath mpxio|dmp| non> [-noalua] [-mcc 60|90|120]

    The host_config command does the following:

    • Changes the FC and SCSI driver settings for x86 and SPARC systems

    • Provides SCSI timeout settings for both MPxIO configurations

    • Sets the VID/PID information

    • Enables or disables ALUA

    • Configures the ALUA settings used by MPxIO and the SCSI drivers for both x86 and SPARC systems

  6. Reboot the host.

SAN toolkit

The tool kit is installed automatically when you install the NetApp Host Utilities package. This kit provides the sanlun utility, which helps you manage LUNs and HBAs. The sanlun command returns information about the LUNs mapped to your host, multipathing, and information necessary to create initiator groups.

Example

In the following example, the sanlun lun show command returns LUN information.

#sanlun lun show

controller(7mode)/                 device                                            host             lun
vserver(Cmode)     lun-pathname    filename                                         adapter protocol  size  mode
------------------------------------------------------------------------------------------------------
data_vserver       /vol/vol1/lun1  /dev/rdsk/c0t600A098038314362692451465A2F4F39d0s2  qlc1  FCP       60g   C
data_vserver       /vol/vol2/lun2  /dev/rdsk/c0t600A098038314362705D51465A626475d0s2  qlc1  FCP       20g   C

SAN booting

What you'll need

If you decide to use SAN booting, it must be supported by your configuration. You can use the NetApp Interoperability Matrix Tool to verify that your OS, HBA, HBA firmware and the HBA boot BIOS, and ONTAP version are supported.

SAN booting is the process of setting up a SAN-attached disk (a LUN) as a boot device for a Solaris host.

You can set up a SAN boot LUN to work in a Solaris MPxIO environment using the FC protocol and running Solaris Host Utilities. The method you use to set up a SAN boot LUN can vary depending on your volume manager and file system. See Install Solaris Host Utilities for details on a SAN boot LUNs in a Solaris MPIO (Multipath I/O) environment.

Multipathing

Multipathing enables you to configure multiple network paths between the host and storage systems. If one path fails, traffic continues on the remaining paths. Oracle Solaris I/O Multipathing or MPxIO is enabled by default for Solaris 11.4. The default setting in /kernel/drv/fp.conf changes to mpxio-disable="no".

Non-ASA configurations

For non-ASA configurations, there should be two groups of paths with different priorities. The paths with higher priorities are Active/Optimized, meaning they are serviced by the controller where the aggregate is located. The paths with lower priorities are active but are non-optimized because they are served from a different controller. The non-optimized paths are only used when optimized paths are not available.

Example

The following example displays the correct output for an ONTAP LUN with two Active/Optimized paths and two Active/Non-Optimized paths:

The path priorities are displayed against the Access State section for each LUN in the OS native mpathadm show lu <LUN> command.

All SAN Array configurations

In All SAN Array (ASA) configurations, all paths to a given LUN are active and optimized. This improves performance by serving I/O operations through all paths at the same time.

Example

The following example displays the correct output for an ONTAP LUN:

The output for the sanlun command is the same for ASA and non-ASA configurations.

The path priorities are displayed against the Access State section for each LUN in the OS native mpathadm show lu <LUN> command.

#sanlun lun show -pv sparc-s7-16-49:/vol/solaris_vol_1_0/solaris_lun

                    ONTAP Path: sparc-s7-16-49:/vol/solaris_vol_1_0/solaris_lun
                           LUN: 0
                      LUN Size: 30g
                   Host Device: /dev/rdsk/c0t600A098038314362692451465A2F4F39d0s2
                          Mode: C
            Multipath Provider: Sun Microsystems
              Multipath Policy: Native
Note All SAN Arrays (ASA) configurations are supported beginning ONTAP 9.8 for Solaris hosts.

NetApp recommends using the following parameter settings for Solaris 11.4 SPARC and x86_64 with NetApp ONTAP LUNs. These parameter values are set by Host Utilities. For additional Solaris 11.4 system settings, see Oracle DOC ID: 2595926.1.

Parameter Value

throttle_max

8

not_ready_retries

300

busy_retries

30

reset_retries

30

throttle_min

2

timeout_retries

10

physical_block_size

4096

All Solaris OS versions (including Solaris 10.x and Solaris 11.x) support Solaris HUK 6.2.

  • For Solaris 11.4, the FC driver binding is changed from ssd to sd. The following configuration files get partially updated during the HUK 6.2 installation process:

    • /kernel/drv/sd.conf

    • /etc/driver/drv/scsi_vhci.conf

  • For Solaris 11.3, the FC driver binding uses ssd. The following configuration files get partially updated during the HUK 6.2 installation process:

    • /kernel/drv/ssd.conf

    • /etc/driver/drv/scsi_vhci.conf

  • For Solaris 10.x, the following configuration files get fully updated during the HUK 6.2 installation process:

    • /kernel/drv/sd.conf

    • /kernel/drv/ssd.conf

    • /kernel/drv/scsi_vhci.conf

To resolve any configuration issues, see the Knowledge Base article What are the Solaris host recommendations for supporting HUK 6.2.

NetApp recommends the following for a successful 4KB aligned I/O with zpools using NetApp LUNs:

  • Verify that you are running a recent enough Solaris OS to ensure that all Solaris features supporting 4KB I/O size alignment are available.

  • Verify that the Solaris 10 update 11 is installed with latest kernel patches and Solaris 11.4 with the latest Support Repository Update (SRU).

  • The NetApp logical unit must have lun/host-type as Solaris regardless of the LUN size.

By default, the Solaris OS will fail to execute the I/O operations after 20s if all paths to a LUN are lost. This is controlled by the fcp_offline_delay parameter. The default value for fcp_offline_delay is appropriate for standard ONTAP clusters. However, in MetroCluster configurations the value of fcp_offline_delay must be increased to 120s to ensure that I/O does not prematurely time out during operations including unplanned fail overs. For additional information and recommended changes to default settings, see the Knowledge Base article Solaris host support considerations in a MetroCluster configuration.

Oracle Solaris virtualization

  • Solaris virtualization options include Solaris Logical Domains (also called LDOMs or Oracle VM Server for SPARC), Solaris Dynamic Domains, Solaris Zones, and Solaris Containers. These technologies have been re-branded generally as "Oracle Virtual Machines" despite the fact that they are based on different architectures.

  • In some cases, multiple options can be used together such as a Solaris Container within a particular Solaris Logical Domain.

  • NetApp generally supports the use of these virtualization technologies where the overall configuration is supported by Oracle and any partition with direct access to LUNs is listed on the NetApp Interoperability Matrix in a supported configuration. This includes root containers, LDOM I/O domains, and LDOM using NPIV to access LUNs.

  • Partitions or virtual machines that use only virtualized storage resources, such as a vdsk, do not need specific qualifications as they do not have direct access to NetApp LUNs. Only the partition or virtual machine that has direct access to the underlying LUN, such as an LDOM I/O domain, must be found in the NetApp Interoperability Matrix Tool.

When LUNs are used as virtual disk devices within an LDOM, the source of the LUN is masked by virtualization and the LDOM will not properly detect the block sizes. To prevent this issue, the LDOM OS must be patched for Oracle Bug 15824910 and a vdc.conf file must be created that sets the block size of the virtual disk to 4096. See Oracle DOC: 2157669.1 for more information.

To verify the patch do the following:

Steps

  1. Create a zpool.

  2. Run zdb -C against the zpool and verify that the value of ashift is 12.

    If the value of ashift is not 12, verify that the correct patch was installed and recheck the contents of vdc.conf.

    Do not proceed until ashift shows a value of 12.

Note Patches are available for Oracle bug 15824910 on various versions of Solaris. Contact Oracle if assistance is required in determining the best kernel patch.

In order to verify that the Solaris client applications are non-disruptive when an unplanned site failover switchover occurs in a SnapMirror active sync environment, you must configure the following setting on the Solaris 11.4 host. This setting overrides the failover module f_tpgs to prevent the execution of the code path that detects the contradiction.

Note Beginning with ONTAP 9.9.1, SnapMirror active sync setting configurations are supported in the Solaris 11.4 host.

Follow the instructions to configure the override parameter:

Steps

  1. Create the configuration file /etc/driver/drv/scsi_vhci.conf with an entry similar to the following for the NetApp storage type connected to the host:

    scsi-vhci-failover-override =
"NETAPP  LUN","f_tpgs"

  2. Use the devprop and mdb commands to verify that the override parameter has been successfully applied:

    root@host-A:~# devprop -v -n /scsi_vhci scsi-vhci-failover-override scsi-vhci-failover-override=NETAPP LUN + f_tpgs
    root@host-A:~# echo "*scsi_vhci_dip::print -x struct dev_info devi_child | ::list struct dev_info devi_sibling| ::print struct dev_info devi_mdi_client| ::print mdi_client_t ct_vprivate| ::print struct scsi_vhci_lun svl_lun_wwn svl_fops_name"| mdb -k

    svl_lun_wwn = 0xa002a1c8960 "600a098038313477543f524539787938"
svl_fops_name = 0xa00298d69e0 "conf f_tpgs"
Note After scsi-vhci-failover-override has been applied, conf is added to svl_fops_name. For additional information and recommended changes to default settings, refer to the NetApp Knowledge Base article Solaris Host support recommended settings in SnapMirror active sync configuration.

Known issues

The Solaris 11.4 with ONTAP release has the following known issues:

NetApp Bug ID Title Description Oracle ID

1362435

HUK 6.2 and Solaris_11.4 FC driver binding changes

Refer to Solaris 11.4 and HUK recommendations. FC driver binding is changed from ssd (4D) to sd (4D). Move the existing configuration from ssd.conf to sd.conf as mentioned in Oracle DOC: 2595926.1). The behavior varies across newly installed Solaris 11.4 systems and systems upgraded from Solaris 11.3 or earlier versions.

(Doc ID 2595926.1)

1366780

Solaris LIF issue noticed during storage failover (SFO) giveback operation with Emulex 32G host bus adapter (HBA) on x86 Arch

Solaris LIF issue noticed with Emulex firmware version 12.6.x and later on the x86_64 platform.

SR 3-24746803021

1368957

Solaris 11.x cfgadm -c configure resulting in I/O error with end-to-end Emulex configuration

Running cfgadm -c configure on Emulex end-to-end configuration results in an I/O error. This is fixed in ONTAP 9.5P17, 9.6P14 , 9.7P13, and 9.8P2

Not Applicable

1345622

Abnormal path reporting on Solaris hosts with ASA/PPorts using OS native commands

Intermittent path reporting issues are noticed on Solaris 11.4 with All SAN Array (ASA).

Not Applicable