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Dell PowerStore 5200T EMC PowerStore Host Configuration Guide - Page 64

Updating iSCSI Configuration File, Parameter, Description, Value

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● Repeat the above to connect from the second subnet: # iscsiadm -m discovery -t st -p 1.1.2.1 -I vlan12 -l 1.1.1.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-a-2ab6c956 1.1.2.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-a-2ab6c956 1.1.1.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-b-2e098984 1.1.2.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-b-2e098984 Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstorefnm00191800733-a-2ab6c956, portal: 1.1.1.1,3260] Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstorefnm00191800733-a-2ab6c956, portal: 1.1.2.1,3260] Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstorefnm00191800733-b-2e098984, portal: 1.1.1.2,3260] Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstorefnm00191800733-b-2e098984, portal: 1.1.2.2,3260] iscsiadm: Could not login to [iface: vlan12, target: iqn.2015-10.com.dell:dellemcpowerstore-fnm00191800733-a-2ab6c956, portal: 1.1.1.1,3260]. iscsiadm: initiator reported error (8 - connection timed out) Login to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstorefnm00191800733-a-2ab6c956, portal: 1.1.2.1,3260] successful. iscsiadm: Could not login to [iface: vlan12, target: iqn.2015-10.com.dell:dellemcpowerstore-fnm00191800733-b-2e098984, portal: 1.1.1.2,3260]. iscsiadm: initiator reported error (8 - connection timed out) Login to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstorefnm00191800733-b-2e098984, portal: 1.1.2.2,3260] successful. ● Verify that the sessions are properly configured: # iscsiadm --m session tcp: [1] 1.1.1.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733b-2e098984 (non-flash) tcp: [2] 1.1.2.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733b-2e098984 (non-flash) tcp: [3] 1.1.1.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733a-2ab6c956 (non-flash) tcp: [4] 1.1.2.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733a-2ab6c956 (non-flash) NOTE: The configurations in this example may differ based on your host and PowerStore configuration. Updating iSCSI Configuration File To configure the PowerStore disk device, modify the configuration file with the following parameters. The configuration file for the multipath daemon is multipath.conf. It is used to overwrite the integrated configuration table of the multipath daemon. When iSCSI is used with PowerStore, the iscsi.conf file is used to overwrite iSCSI specific multipathing related settings. To configure the PowerStore disk device, modify the /etc/iscsi/iscsid.conf file, using the following parameters: NOTE: The example below is based on RedHat. For details about configuring PowerStore disk device with iSCSI, see the specific instructions of your operating system. Parameter Description Value node.session.timeo.replacement_timeout Specifies the number of seconds the iSCSI layer waits for 15 a timed-out path/session to reestablish before failing any commands on that path/session. The default value is 120. node.startup Defines whether the session should be established manually or automatically when the system starts from a power off state or when rebooted Default value for RedHat: automatic, Default value for SUSE: manual automatic Using these settings prevents commands from being split by the iSCSI initiator and enables instantaneous mapping from the host to the volume. 64 Host Configuration for Linux

Section	Page
Dell EMC PowerStore Host Configuration Guide	1
Contents	3
Additional Resources	7
Introduction	8
Purpose	8
Best Practices for Storage Connectivity	9
General SAN Guidelines	9
Using LUN 0 with PowerStore	9
Using LUNs 254 and 255 with PowerStore	9
Fibre Channel SAN Guidelines	10
Recommended Configuration Values Summary	10
Recommended Configuration	10
Additional Considerations	11
Zoning using SCSI WWN	11
NVMe/FC SAN Guidelines	11
Recommended Configuration Values Summary	12
Recommended Configuration	12
Additional Considerations	12
Zoning using NVMe WWN	13
iSCSI SAN Guidelines	13
Recommended Configuration Values Summary	13
Recommended Configuration	14
Additional Considerations	15
NVMe over TCP (NVMe/TCP) SAN Guidelines	15
Recommended Configuration Values Summary	15
Recommended Configuration	16
Additional Considerations	17
NVMe-oF General Guidelines	17
SAN Connectivity Best Practices	18
Direct Attach	18
SAN - Minimal Configuration	18
SAN - Recommended Configuration	19
Single Appliance Cluster	19
Two Appliance Cluster	20
Three Appliance Cluster	20
Four Appliance Cluster	21
Host Configuration for VMware vSphere ESXi	23
Related E-Lab Host Connectivity Guide	23
Chapter Scope	23
Recommended Configuration Values Summary	23
Boot from SAN	25
Fibre Channel (FC) Configuration	25
Pre-Requisites	25
Known Issues	25
NVMe over Fibre Channel Configuration	25
Pre-Requisites	26
Setting the ESXi Host NVMe Qualified Name	26
Setting up NVMe HBAs	26
Setting Up Marvell (QLogic) HBAs	26
Setting Up Emulex HBAs	27
Known Issues	27
iSCSI Configuration	27
Pre-Requisites	27
Network Configuration for iSCSI	27
PowerStore Operating System 1.x	28
PowerStore Operating System 2.x and Above	28
Example - Configuring iSCSI Networking	29
iSCSI Software Adapter Configuration	31
Jumbo Frames	31
Delayed ACK	32
Login Timeout	32
No-Op Interval	32
Known Issues	33
NVMe/TCP Configuration	33
Pre-Requisites	33
Setting the ESXi Host NVMe Qualified Name	33
Network Configuration for NVMe/TCP	34
PowerStore Operating System 2.x and Above	34
Example - Configuring NVMe/TCP Networking	35
NVMe/TCP Software Adapter Configuration	36
Using CLI	37
Known Issues	38
vStorage API for System Integration (VAAI) Settings	38
Confirming that VAAI is Enabled on the ESXi Host	38
Setting the Maximum I/O	39
Confirming UNMAP Priority	39
Configuring VMware vSphere with PowerStore Storage in a Multiple Cluster Configuration	40
Multipathing Software Configuration	41
Configuring Native Multipathing (NMP) with SCSI	41
Configuring NMP Round Robin as the Default Pathing Policy for All PowerStore Volumes	41
Configuring NMP Round Robin on a PowerStore Volume Already Presented to the ESXi Host	42
Configuring High Performance Multipathing (HPP) with NVMe	43
Configuring HPP Round Robin as the Default Pathing Policy for All PowerStore Volumes	43
Configuring HPP Round Robin on a PowerStore Volume Already Presented to the ESXi Host	44
Configuring PowerPath Multipathing	45
PowerStore Considerations	45
Presenting PowerStore Volumes to the ESXi Host	45
Disk Formatting	45
Virtual Volumes	46
AppsOn: Virtual Machine Compute and Storage Collocation Rules for PowerStore X Clusters	46
vSphere Considerations	46
VMware Paravirtual SCSI Controllers	46
Virtual Disk Provisioning	46
Virtual Machine Guest Operating System Settings	47
Creating a File System	47
Host Configuration for Microsoft Windows	48
Related E-Lab Host Connectivity Guide	48
Recommended Configuration Values Summary	48
Boot from SAN	49
Fibre Channel Configuration	49
Pre-Requisites	49
iSCSI Configuration	49
Pre-Requisites	50
PowerStore Operating System 1.x Only - Single Subnet	50
PowerStore Operating System 2.x and Above - Multi Subnet	51
Multipathing Software Configuration	51
Configuring Native Multipathing Using Microsoft Multipath I/O (MPIO)	51
Enabling MPIO on the Windows Host and Configuring MPIO for PowerStore Volumes Presented to the Host	52
PowerPath Configuration with PowerStore Volumes	52
Post-Configuration Steps - Using the PowerStore system	53
Presenting PowerStore Volumes to the Windows Host	53
Creating a File System	53
Host Configuration for Linux	54
Related E-Lab Host Connectivity Guide	54
Recommended Configuration Values Summary	54
Boot from SAN	55
Fibre Channel (FC) Configuration	56
Pre-Requisites	56
NVMe over Fibre Channel Configuration	56
Pre-Requisites	56
Known Issues	56
NVMe/FC Configuration on Linux Hosts	57
Setting the Linux Host NVMe Qualified Name	57
Setting Up Marvell Qlogic HBAs	57
Setting Up Emulex HBAs	57
iSCSI Configuration	58
Pre-Requisites	58
PowerStore Operating System 1.x Only - Single Subnet	58
Policy-Based Routing	59
Bonding/Teaming	59
Disabling Reverse Path Filtering	60
PowerStore Operating System 2.x and Later - Multi Subnet	60
Configuration Sample	61
iSCSI Session Configuration	63
Updating iSCSI Configuration File	64
Multipathing Software Configuration	65
Pre-Requisites	65
Configuration with Device Mapper Multipathing for SCSI	65
Configuring with Device Mapper Multipathing for NVMe	67
Configuration with PowerPath	67
Configuring Oracle ASM	67
Post-Configuration Steps - Using the PowerStore system	68
Presenting PowerStore Cluster Volumes to the Linux Host	68
Partition Alignment in Linux	68
Creating a File System	69
Mounting iSCSI File Systems	69
Host Configuration for AIX	71
Related E-Lab Host Connectivity Guide	71
Recommended Configuration Values Summary	71
2 TB LUN Size Support	72
Boot from SAN	72
Fibre Channel Configuration	72
Pre-Requisites	72
Queue Depth	73
Setting the Queue Depth	73
Fast I/O Failure for Fibre Channel Devices	73
Dynamic Tracking	74
Fibre Channel Adapter Device Driver Maximum I/O Size	74
Dell EMC AIX ODM Installation	75
Dell EMC AIX ODM Installation Requirements	75
Host Configuration for Solaris	76
Related E-Lab Host Connectivity Guide	76
Recommended Configuration Values Summary	76
Boot from SAN	77
Fibre Channel Configuration	77
Pre-Requisites	78
Queue Depth	78
Solaris Host Parameter Settings	78
Configuring Solaris native multipathing	78
Enable Solaris native multipathing on Solaris 10 and 11.0-11.4 hosts (SPARC and x86)	78
Updating scsi_vhci.conf configuration file	79
PowerPath Configuration with PowerStore Volumes	79
Host storage tuning parameters	80
Updating fp.conf configuration file	80
Creating PowerStore System Configuration File	81
Updating fcp.conf configuration file	81
Updating ssd.conf configuration file (Solaris 10 and 11.0-11.3 SPARC)	82
Updating sd.conf configuration file (Solaris 11.x x86 and 11.4 SPARC)	83
Post configuration steps - using the PowerStore system	83
Partition alignment in Solaris	84
Host Configuration for HP-UX	85
Related E-Lab Host Connectivity Guide	85
Recommended Configuration Values Summary	85
Boot from SAN	86
Fibre Channel Configuration	86
Pre-Requisites	86
HP-UX Host Parameter Settings	87
Maximum Transfer Length	87
Multipathing Software Configuration	87
Configuring Native Multipathing Using HP-UX Multipath I/O (MPIO)	87
Post-Configuration Steps - Using the PowerStore System	88
Presenting PowerStore Volumes to the HP-UX Host	88
Creating a file system	88
Considerations for Boot from SAN with PowerStore	90
Consideration for Boot from SAN with PowerStore	90
Troubleshooting	91
View Configured Storage Networks for NVMe/TCP	91
View Configured Storage Networks for iSCSI	91
View NVMe/FC and SCSI/FC Target Ports	92
View Physical Ethernet Ports Status	92
View Discovered Initiators	93

Match case Limit results 1 per page

●

Repeat the above to connect from the second subnet:

# iscsiadm -m discovery -t st -p 1.1.2.1 -I vlan12 -l

1.1.1.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-a-2ab6c956

1.1.2.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-a-2ab6c956

1.1.1.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-b-2e098984

1.1.2.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-b-2e098984

Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstore-

fnm00191800733-a-2ab6c956, portal: 1.1.1.1,3260]

Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstore-

fnm00191800733-a-2ab6c956, portal: 1.1.2.1,3260]

Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstore-

fnm00191800733-b-2e098984, portal: 1.1.1.2,3260]

Logging in to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-powerstore-

fnm00191800733-b-2e098984, portal: 1.1.2.2,3260]

iscsiadm: Could not login to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-

powerstore-fnm00191800733-a-2ab6c956, portal: 1.1.1.1,3260].

iscsiadm: initiator reported error (8 - connection timed out)

fnm00191800733-a-2ab6c956, portal: 1.1.2.1,3260] successful.

iscsiadm: Could not login to [iface: vlan12, target: iqn.2015-10.com.dell:dellemc-

powerstore-fnm00191800733-b-2e098984, portal: 1.1.1.2,3260].

iscsiadm: initiator reported error (8 - connection timed out)

fnm00191800733-b-2e098984, portal: 1.1.2.2,3260] successful.

●

Verify that the sessions are properly configured:

# iscsiadm --m session

tcp: [1] 1.1.1.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-

b-2e098984 (non-flash)

tcp: [2] 1.1.2.1:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-

b-2e098984 (non-flash)

tcp: [3] 1.1.1.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-

a-2ab6c956 (non-flash)

tcp: [4] 1.1.2.2:3260,1 iqn.2015-10.com.dell:dellemc-powerstore-fnm00191800733-

a-2ab6c956 (non-flash)

NOTE:

The configurations in this example may differ based on your host and PowerStore configuration.

Updating iSCSI Configuration File

To configure the PowerStore disk device, modify the configuration file with the following parameters.

The configuration file for the multipath daemon is multipath.conf. It is used to overwrite the integrated configuration table of

the multipath daemon.

When iSCSI is used with PowerStore, the iscsi.conf file is used to overwrite iSCSI specific multipathing related settings.

To configure the PowerStore disk device, modify the

/etc/iscsi/iscsid.conf

file, using the following parameters:

NOTE:

The example below is based on RedHat. For details about configuring PowerStore disk device with iSCSI, see the

specific instructions of your operating system.

Parameter

Description

Value

node.session.timeo.replacement_timeout

Specifies the number of seconds the iSCSI layer waits for

a timed-out path/session to reestablish before failing any

commands on that path/session. The default value is 120.

node.startup

Defines whether the session should be established manually or

automatically when the system starts from a power off state or

when rebooted

Default value for RedHat: automatic, Default value for SUSE:

manual

automatic

Using these settings prevents commands from being split by the iSCSI initiator and enables instantaneous mapping from the

host to the volume.

Host Configuration for Linux