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host utilities, veritas, infoscale, 6.x, netapp, ontap, san, lun, multipathing, iscsi |
Provides guidance on ONTAP SAN host configuration settings for the Veritas Infoscale 6 series release |
This document provides guidance on ONTAP SAN host configuration settings for the Veritas Storage Foundation 6 series release for Red Hat Enterprise Linux & Oracle Linux (RHCK based) platforms with FC, FCoE and iSCSI protocols.
In the following illustration, the sanlun show command returns LUN information.
# sanlun show -p -v SFRAC:/vol/fen1/lun1
ONTAP Path: SFRAC:/vol/fen1/lun1
LUN: 0
LUN Size: 10g
Product: cDOT
DMP NODE: sfrac0_47
Multipath Provider: Veritas
---------- ------ --------- ------ -------------------------------------
Veritas host vserver host:
path path path /dev/ chan: vserver major:
state state type node id:lun LIF minor
---------- ------ --------- ------ -------------------------------------
enabled up active/non-optimized sdea 14:0:1:0 lif_10 128:32
enabled (a) up active/optimized sdcj 14:0:0:0 lif_2 69:112
enabled (a) up active/optimized sdb 13:0:0:0 lif_1 8:16
enabled up active/non-optimized sdas 13:0:1:0 lif_9 66:192
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.
Refer to Veritas Support Portal (Product Matrix, Platform Lookup, HCL Matrix) to verify SAN Boot configuration supportability and known caveats.
You must verify that your configuration meets the system requirements. For more information, see the NetApp Interoperability Matrix Tool and the Veritas HCL Matrix.
In this example, the vxdmpadm command is used to verify that the VxDMP Multipath has the ONTAP target array attached.
# vxdmpadm listenclosure ENCLR_NAME ENCLR_TYPE ENCLR_SNO STATUS ARRAY_TYPE LUN_COUNT FIRMWARE ===================================================================================== sfrac0 SFRAC 804Xw$PqE52h CONNECTED ALUA 43 9800
# vxdmpadm getdmpnode NAME STATE ENCLR-TYPE PATHS ENBL DSBL ENCLR-NAME =================================================================== sfrac0_47 ENABLED SFRAC 4 4 0 sfrac0
With Veritas Dynamic Multipathing (VxDMP), you must perform configuration tasks to claim NetApp LUNs as Veritas Multipath Devices. You must have the Array Support Library (ASL) and the Array Policy Module (APM) packages installed that Veritas provides for NetApp storage systems. While the Veritas Software Installation loads the default ASL APM packages along with the product, it is recommended to use the latest supported packages listed on Veritas support portal.
The following example displays the Veritas Support Library (ASL) and the Array Policy Module (APM) configuration.
# vxdmpadm list dmpnode dmpnodename=sfrac0_47 | grep asl asl = libvxnetapp.so
# vxddladm listversion |grep libvxnetapp.so libvxnetapp.so vm-7.4-rev-1 6.1 # rpm -qa |grep VRTSaslapm VRTSaslapm-x.x.x.0000-RHEL8.X86_64
vxddladm listsupport libname=libvxnetapp.so ATTR_NAME ATTR_VALUE ========================================= LIBNAME libvxnetapp.so VID NETAPP PID All ARRAY_TYPE ALUA, A/A
# vxdmpadm getsubpaths dmpnodename-sfrac0_47 NAME STATE[A] PATH-TYPE[M] CTLR-NAME ENCLR-TYPE ENCLR-NAME ATTRS PRIORITY =================================================================================== sdas ENABLED Active/Non-Optimized c13 SFRAC sfrac0 - - sdb ENABLED(A) Active/Optimized c14 SFRAC sfrac0 - - sdcj ENABLED(A) Active/Optimized c14 SFRAC sfrac0 - - sdea ENABLED Active/Non-Optimized c14 SFRAC sfrac0 - -
The following Veritas VxDMP tunables are recommended by NetApp for optimum system configuration in storage failover operations.
| Parameter | Setting |
|---|---|
dmp_lun_retry_timeout |
60 |
dmp_path_age |
120 |
dmp_restore_interval |
60 |
DMP tunables are set online by using the vxdmpadm command as follows:
# vxdmpadm settune dmp_tunable=value
The values of these tunable can be verified dynamically by using #vxdmpadm gettune.
The following example shows the effective VxDMP tunables on the SAN host.
# vxdmpadm gettune Tunable Current Value Default Value dmp_cache_open on on dmp_daemon_count 10 10 dmp_delayq_interval 15 15 dmp_display_alua_states on on dmp_fast_recovery on on dmp_health_time 60 60 dmp_iostats_state enabled enabled dmp_log_level 1 1 dmp_low_impact_probe on on dmp_lun_retry_timeout 60 30 dmp_path_age 120 300 dmp_pathswitch_blks_shift 9 9 dmp_probe_idle_lun on on dmp_probe_threshold 5 5 dmp_restore_cycles 10 10 dmp_restore_interval 60 300 dmp_restore_policy check_disabled check_disabled dmp_restore_state enabled enabled dmp_retry_count 5 5 dmp_scsi_timeout 20 20 dmp_sfg_threshold 1 1 dmp_stat_interval 1 1 dmp_monitor_ownership on on dmp_monitor_fabric on on dmp_native_support off off
-
For FC/FCoE only: Use the default timeout values.
-
For iSCSI only: Set the
replacement_timeoutparameter value to 120.The iSCSI
replacement_timeoutparameter controls how long the iSCSI layer should wait for a timed-out path or session to reestablish itself before failing any commands on it. Setting the value ofreplacement_timeoutto 120 in the iSCSI configuration file is recommended.
# grep replacement_timeout /etc/iscsi/iscsid.conf node.session.timeo.replacement_timeout = 120
For Red Hat Enterprise Linux 7 and 8 series, you must configure udev rport values to support the Veritas Infoscale environment in storage failover scenarios. Create the file /etc/udev/rules.d/40-rport.rules with the following file content:
# cat /etc/udev/rules.d/40-rport.rules KERNEL=="rport-*", SUBSYSTEM=="fc_remote_ports", ACTION=="add", RUN+=/bin/sh -c 'echo 20 > /sys/class/fc_remote_ports/%k/fast_io_fail_tmo;echo 864000 >/sys/class/fc_remote_ports/%k/dev_loss_tmo'"
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Note
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For all other settings specific to Veritas, refer to the standard Veritas Infoscale product documentation. |
If you have a heterogenous multipath environment including Veritas Infoscale, Linux Native Device Mapper, and LVM volume manager, please refer to the Veritas Product Administration guide for configuration settings.