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Operating Systems AIX [ASK] - AIX Fibre Channel behavior Post 303031938 by Phat on Friday 8th of March 2019 02:41:19 AM
Old 03-08-2019
Hi Bakunin,

You are right. I'm not so understand well the FC work, zoning work, and IBM virtualization work.
Just want to know the FC port work and multipath(redundant) work.

We talk about another aspect. For example, if you have 2 FC cards, each has 2 ports. So 4 ports are connected to the LUN. Assuming that, 3 ports failed and we have only 1 port. So we still can see the LUN? and in case 2 ports failed, we can see the LUN? In regard redundant, with 4 line connected to LUN, the system is only down if 4 lines were down/broken, even if 1 line is still available, the system still running. Please correct me this.

I'm surprised is that in my environment I can see the LUN on 2 still-working FC cards, but not boot device. After 1 more FC is up again, I can see. So confused about this.
 

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fcinfo(1M)																fcinfo(1M)

NAME
fcinfo - Fibre Channel HBA Port Command Line Interface SYNOPSIS
fcinfo hba-port [-l] [HBA_port_WWN...] fcinfo remote-port [-ls] [-p HBA_port_WWN] [REMOTE_port_WWN...] fcinfo [-V] fcinfo [-?] fcinfo is a command line interface that collects administrative information on fibre channel host bus adapter (HBA) ports on a host. It also collects data on any fibre channel targets that may be connected to those ports in a Storage Area Network (SAN). SUBCOMMANDS The following subcommands are supported: hba-port Lists information for the HBA port referenced by the specified HBA_port_WWN. If HBA_port_WWN is not specified, all fibre channel HBA ports on the host will be listed. remote-port Lists the remote-port information for those remote ports that are specified. If no REMOTE_port_WWN is specified, all remote ports that are visible through HBA_port_WWN are listed. OPTIONS
The following options are supported: -l, --linkstat Lists the link error statistics information for the port referenced by the specified HBA_port_WWN or REMOTE_port_WWN. -p HBA_port_WWN, --port HBA_port_WWN Retrieve remote port information from the HBA_port_WWN of the local HBA port on the host. The -p option can only be used with the remote-port subcommand and is a mandatory option. -s, --scsi-target Lists the SCSI target information for all remote ports the user has asked for. The -p, --port option must always be specified and must be a valid HBA port on the host. This HBA port will be used as the initiator for which to retrieve the SCSI level target information. Note that this will only function on remote port fibre channel World-Wide Names that support an FC4 type of SCSI. -V, --version Prints the version information. -?, --help Prints the usage information. EXAMPLES
Example 1: Listing all HBA ports The following command lists all fibre channel HBA ports on the host: # fcinfo hba-port HBA Port WWN: 210000e08b074cb5 OS Device Name: /dev/cfg/c1 Manufacturer: QLogic Corp. Model: 375-3108-xx Type: N-port State: online Supported Speeds: 1Gb 2Gb Current Speed: 2Gb Node WWN: 200000e08b074cb5 HBA Port WWN: 210100e08b274cb5 OS Device Name: /dev/cfg/c2 Manufacturer: QLogic Corp. Model: 375-3108-xx Type: N-port State: online Supported Speeds: 1Gb 2Gb Current Speed: 2Gb Node WWN: 200100e08b274cb5 HBA Port WWN: 210000e08b072ab5 OS Device Name: /dev/cfg/c3 Manufacturer: QLogic Corp. Model: 375-3108-xx Type: L-port State: online Supported Speeds: 1Gb 2Gb Current Speed: 2Gb Node WWN: 200000e08b072ab5 HBA Port WWN: 210100e08b272ab5 OS Device Name: /dev/cfg/c4 Manufacturer: QLogic Corp. Model: 375-3108-xx Type: N-port State: online Supported Speeds: 1Gb 2Gb Current Speed: 2Gb Node WWN: 200100e08b272ab5 Example 2: Listing HBA ports and link statistics The following command lists information for the HBA ports and the link statistics for those ports: # fcinfo hba-port -l 210000e08b074cb5 210100e08b274cb5 HBA Port WWN: 210000e08b074cb5 OS Device Name: /dev/cfg/c1 Manufacturer: QLogic Corp. Model: 375-3108-xx Type: N-port State: online Supported Speeds: 1Gb 2Gb Current Speed: 2Gb Node WWN: 200000e08b074cb5 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 HBA Port WWN: 210100e08b274cb5 OS Device Name: /dev/cfg/c2 Manufacturer: QLogic Corp. Model: 375-3108-xx Type: N-port State: online Supported Speeds: 1Gb 2Gb Current Speed: 2Gb Node WWN: 200100e08b274cb5 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Example 3: Listing all remote ports The following command lists all remote ports that are visible through the given HBA port: # fcinfo remote-port -p 210100e08b274cb5 Remote Port WWN: 50020f230000b4af Active FC4 Types: SCSI SCSI Target: yes Node WWN: 50020f200000b4af Remote Port WWN: 210000e08b07daa6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200000e08b07daa6 Remote Port WWN: 20030003ba27c788 Active FC4 Types: SCSI SCSI Target: yes Node WWN: 10000003ba27c788 Remote Port WWN: 210000e08b096a60 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200000e08b096a60 Example 4: Listing remote ports and link statistics The following command lists information for the remote ports and the link statistics for those ports: # fcinfo remote-port -l -p 210100e08b272ab5 Remote Port WWN: 210100e08b296a60 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200100e08b296a60 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 20030003ba27d56d Active FC4 Types: SCSI SCSI Target: yes Node WWN: 10000003ba27d56d Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 4765165 Loss of Signal Count: 4765165 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 210100e08b27f7a6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b27f7a6 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 50020f230000b897 Active FC4 Types: SCSI SCSI Target: yes Node WWN: 50020f200000b897 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 7 Loss of Signal Count: 7 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 210100e08b27daa6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b27daa6 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 210000e08b074cb5 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200000e08b074cb5 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 210100e08b296060 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b296060 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Example 5: Listing all SCSI targets and link statistics The following command lists all remote ports as well as the link statistics and scsi-target information: # fcinfo remote-port -sl -p 210100e08b272ab5 Remote Port WWN: 210100e08b296a60 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200100e08b296a60 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 20030003ba27d56d Active FC4 Types: SCSI SCSI Target: yes Node WWN: 10000003ba27d56d Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 4765165 Loss of Signal Count: 4765165 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 LUN: 0 Vendor: SUN Product: T4 OS Device Name: /dev/rdsk/c4t20030003BA27D56Dd0s2 LUN: 1 Vendor: SUN Product: T4 OS Device Name: /dev/rdsk/c4t20030003BA27D56Dd1s2 Remote Port WWN: 210100e08b27f7a6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b27f7a6 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 50020f230000b897 Active FC4 Types: SCSI SCSI Target: yes Node WWN: 50020f200000b897 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 7 Loss of Signal Count: 7 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 LUN: 0 Vendor: SUN Product: T300 OS Device Name: Unknown LUN: 1 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d1s2 LUN: 2 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d2s2 LUN: 3 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d3s2 LUN: 4 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d4s2 LUN: 5 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d5s2 LUN: 6 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d6s2 LUN: 7 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d7s2 LUN: 8 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d8s2 LUN: 9 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d9s2 LUN: 10 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d10s2 LUN: 11 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d11s2 LUN: 12 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d12s2 LUN: 13 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d13s2 LUN: 14 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d14s2 LUN: 15 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d15s2 Remote Port WWN: 210100e08b27daa6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b27daa6 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 210000e08b074cb5 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200000e08b074cb5 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Remote Port WWN: 210100e08b296060 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b296060 Link Error Statistics: Link Failure Count: 0 Loss of Sync Count: 0 Loss of Signal Count: 0 Primitive Seq Protocol Error Count: 0 Invalid Tx Word Count: 0 Invalid CRC Count: 0 Example 6: Listing SCSI target information The following command lists all remote ports as well as the scsi-target information: # fcinfo remote-port -s -p 210100e08b272ab5 Remote Port WWN: 210100e08b296a60 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200100e08b296a60 Remote Port WWN: 20030003ba27d56d Active FC4 Types: SCSI SCSI Target: yes Node WWN: 10000003ba27d56d LUN: 0 Vendor: SUN Product: T4 OS Device Name: /dev/rdsk/c4t20030003BA27D56Dd0s2 LUN: 1 Vendor: SUN Product: T4 OS Device Name: /dev/rdsk/c4t20030003BA27D56Dd1s2 Remote Port WWN: 210100e08b27f7a6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b27f7a6 Remote Port WWN: 50020f230000b897 Active FC4 Types: SCSI SCSI Target: yes Node WWN: 50020f200000b897 LUN: 0 Vendor: SUN Product: T300 OS Device Name: Unknown LUN: 1 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d1s2 LUN: 2 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d2s2 LUN: 3 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d3s2 LUN: 4 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d4s2 LUN: 5 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d5s2 LUN: 6 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d6s2 LUN: 7 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d7s2 LUN: 8 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d8s2 LUN: 9 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d9s2 LUN: 10 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d10s2 LUN: 11 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d11s2 LUN: 12 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d12s2 LUN: 13 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d13s2 LUN: 14 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d14s2 LUN: 15 Vendor: SUN Product: T300 OS Device Name: /dev/rdsk/c4t50020F230000B897d15s2 Remote Port WWN: 210100e08b27daa6 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b27daa6 Remote Port WWN: 210000e08b074cb5 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200000e08b074cb5 Remote Port WWN: 210100e08b296060 Active FC4 Types: SCSI SCSI Target: no Node WWN: 200100e08b296060 See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNW | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ attributes(5) ERROR MESSAGES
Errors that can occur in addition to the errors normally associated with system administration commands: HBA_port_WWN: not found REMOTE_port_WWN: not found 17 Feb 2005 fcinfo(1M)
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