Sorted by: 42. (Optional) Configures the service name of the target to an empty string. Running NFS Behind a Firewall", Expand section "8.7.2. Use the lsluns command to list logical unit numbers (LUNs) discovered in the Fibre Channel storage area networks (SAN), or to show the encryption state of zfcp-attached LUNs.. lsluns is designed for environments where SCSI devices are attached through the zfcp device driver.. lsluns lists all LUNs discovered in the Fibre Channel SAN. Configuring Error Behavior", Collapse section "3.8. Red Hat Customer Portal Labs Relevant to Storage Administration, Table25.1, Fibre Channel API Capabilities. fc srp itl guid extension wwpn LUN description "descr", no fc srp itl guid extension wwpn LUN description. Here is a step by step guide to verify that your FC HBAs installed and configured correctly. Assign multiple partition keys by appending a colon, then the next key (aa:aa:bb:bb:cc:cc:dd:dd). Fibre Channel (FC) Host Bus Adapters(HBA) are interface cards that connects the host system to a fibre channel network or devices. Supported SMB Protocol Versions", Collapse section "9.2.1. After dev_loss_tmo triggers, the scsi device is removed. Configuring Fibre Channel over Ethernet", Expand section "13. Here's the syntax of fc command : //syntax of fc command fc [-e ename] [-lnr] [first] [last] or fc -s [pat=rep] [command] where the -lnr refers to the . Configuring NFS Client", Expand section "8.6. (adsbygoogle=window.adsbygoogle||[]).push({}); There are several commands to determine the WWN of a Fibre Channel (FC) HBA and their status (online/offline). Gineesh has worked as a Systems Engineer, Automation Specialist, and author. Fibre Channel API Capabilities. 2532 ISP2532-based 8Gb Fibre Channel to PCI Express HBA NVMe over fabrics using FC", Expand section "III. The few sockets that are listed are all TCP sockets. Recovering a VDO Volume After an Unclean Shutdown", Expand section "30.4.8. Unrestricted read-write user, Fibre Channel read-write user. Subsystem: Hewlett-Packard Company Device 338e We can use lspci command to find the FC HBA adapter details first. Allows the controller to select an alternate gateway interface port if the primary path fails. The following options globally override the recovery_tmo values: For all iSCSI devices that are managed by DM Multipath, the fast_io_fail_tmo option in DM Multipath globally overrides the recovery_tmo value. Class Device = "host3" The DM Multipath fast_io_fail_tmo option takes precedence over replacement_timeout. How we can tell, that we have 2 x 2-port hba and not 4 x 1 hba port hba? Configuring the NVMe initiator for QLogic adapters, III. Setting up a remote diskless system", Collapse section "20. Reconfiguring an existing NVDIMM namespace to file system DAX mode, 7.8.3. fc srp initiator-wwpn guid extension slot#/port# wwpn. Network File System (NFS)", Collapse section "8. We can use sg_reset command in linux and syntax of QLogic hba reset commands in linux via sg_reset command in linux is as below. The NVDIMM persistent memory technology, 7.6. 1. Configuring an Exported File System for Diskless Clients, 25.1.7. Configuring the NVMe host for Broadcom adapters, 17.3. Overview of NVMe over fabric devices, 17.2. Assigns a description to the initiator-target pair. RedHat does not recommend using replacement_timeout to override recovery_tmo in devices managed by DM Multipath because DM Multipath always resets recovery_tmo, when the multipathd service reloads. port_name = "0x50014380281412e8" Discovers initiator-target-LUN (ITL) combinations and adds them to your configuration file. Creating a Post Snapshot with Snapper, 14.2.1.3. For those types of cards you must use lspci -k to retrieve the information. Monitoring pNFS SCSI Layouts Functionality", Expand section "9. Configuring the NVMe host for QLogic adapters, 18. Port selection relies upon comparative IO traffic. Table3-2 Usage Guidelines for fc srp lu Command Arguments. Btrfs (Technology Preview)", Expand section "6.4. Re-configuring a remote diskless system, 20.6. Default : the configured value of srp-global itl for this LU category(random/sequential). fc srp itlshow interface fcshow fc srp initiator. Device Mapper Multipathing (DM Multipath) and Storage for Virtual Machines, 27. Determining the link loss behavior of device using Fibre Channel 11.3. fc srp lu logical-id {description "descr" | device-category {random target wwpn | sequential target wwpn} | dynamic-gateway-port-failover [default] | dynamic-gateway-port-loadbalancing [default] | dynamic-path-affinity [default] | io-hi-mark mark [default] | max-retry retry [default] | min-io-timeout timeout [default] | target wwpn}, no fc srp lu logical-id {dynamic-gateway-port-failover | dynamic-gateway-port-loadbalancing | dynamic-path-affinity | target}. (Replace 2.6.18-308.el5PAE with your kernel version in the command below), The above output shows that this HBA is supported by the module qla2xxx, The lsmod command will list the currently loaded kernel modules, The output shows the module qla2xxx is loaded by the kernel. Configure initiators so SRP hosts can communicate with SANs. fc srp initiator-wwpn 00:00:2c:90:01:1b:b7:50 00:00:00:00:00:00:00:00 Configuring Maximum Time for Error Recovery with eh_deadline, 26. Overview of persistent naming attributes", Expand section "6.3. Theoretical Overview of VDO", Expand section "30.2. The files are not available during the booting a remote diskless system, 20.6.3. Disadvantages of non-persistent naming attributes, 6.3. Preparing an environment for the remote diskless system, 20.2. Creating a new NVDIMM namespace in sector mode, 7.7. Integrated Volume Management of Multiple Devices, 6.4.1. Using Compression", Collapse section "30.4.8. Discarding unused blocks", Collapse section "8. This value appears in the srp-lunid field of the show fc srp itl command output. 2023 Cisco and/or its affiliates. Enabling and Disabling Compression, 30.6.3.1.1. Print Results. The timeout defaults to 10 seconds. Configuring an NVMe over RDMA client, 29.2.1. The following is the list of configuration files in the /sys/class/ directory that provide the user-space API to Fibre Channel. Configuring Fibre Channel over Ethernet", Collapse section "12. Configure WWPNs for initiators so that FC devices can recognize them and communicate with them. AIX, Solaris, Linux, or HPUX): switch# show scsi-target pwwn Related Commands. Using Fibre Channel devices", Collapse section "11. (Optional) Port, list of ports, or range of ports to which you grant or deny the initiator access. The LU can be accessed via the target ports configured. The value, an integer, must fall between 1 and 100. Migrating from ext4 to XFS", Collapse section "4. An "initiator-target-lun" (ITL) identifies a fully-configured link between an initiator and storage. The commonly used commands for adding, removing, and displaying FC devices are as follows: fcinfo - Collects and displays administrative information about FC-HBA ports on hosts, remote ports, and configured logical units. Creating an unencrypted Stratis pool, 25.7. Characteristics of Stratis snapshots, 28.3. Sets the maximum number of I/O requests that can be sent per logical unit. Creating a New Pool, Logical Volume, and File System, 16.2.4. Controls when the scsi device gets removed from the system. Device = "host3" Hello, Creates an SRP LUN ID alias for an existing FC LUN ID. unfortunately systools is no more available in most distros. Listing Currently Mounted File Systems", Expand section "19.2. System Requirements", Expand section "30.3. # /usr/bin/sg_reset -H /dev/sgx # sg_reset -H /dev/sg30 Here /dev/sgx is the device via which LUNs are getting allocated. This can be a physical disk or you can create a disk image. The directories host3 and host4 in the example above contains information specific to each adapter like node name (WWN), port name (WWN), type, speed,state etc.. An easier way to get this information is to use the systool command. Resets the description of the ITL to an empty string. Before you can customize an initiator, you must create an initiator entry with the auto-bind keyword or the wwnn keyword. (Not 100%, some older chips in 4Gb and 8Gb can be x8 capable and the cards are x4.) Using volume_key in a Larger Organization", Expand section "23. Device names managed by the udev mechanism in /dev/disk/", Expand section "7. Mounting an SMB Share", Collapse section "9.2. Major and Minor Numbers of Storage Devices, 25.8.3. DM Multipath overrides of the device timeout, 12. Configuring NVMe over fabrics using NVMe/RDMA", Expand section "17. Device Names Managed by the udev Mechanism in /dev/disk/by-*, 25.8.3.1. Device names managed by the udev mechanism in /dev/disk/, 6.4. Using Fibre Channel devices", Expand section "12. Creating a partition table on a disk with parted, 4.2. Increase this value (or increase the max-retry value) if you use a known slow connection. We recommend that you do not manually create targets. Creating a software RAID during the installation, 21.6. Overview of persistent naming attributes, 6.1. Enabling pNFS SCSI Layouts in NFS", Expand section "8.10.6. Discovers initiator-target-LUN (ITL) groups for the specified target and adds them to the configuration file. To configure an initiator normally a SAN-attached host but in IB terms a SRP host combined with a Server Switchto communicate with a Fibre Channel SAN across a Fibre Channel gateway on your Server Switch, enter the fc srp initiator command in Global Configuration mode. Each physical port on the FC gateway supports 32 virtual ports to form a virtual FC arbitrated loop. Configuring a tftp Service for Diskless Clients, 24.2. fc srp lufc srp targetshow fc srp-globalshow fc srp initiatorshow fc srp itshow fc srp itlshow fc srp lu. The most common issues with loading a remote diskless system", Collapse section "20.6. Number of times the same I/O request may be sent to a logical unit. Using volume_key as an Individual User, 20.3. Running NFS Behind a Firewall", Collapse section "8.6.3. This command returns any one of the following output: Online if the remote port is operating normally. If you only want or need to see the TCP sockets, you can use the -t (TCP) option to restrict the display to only show TCP sockets. Removing an iSCSI object using targetcli tool, 10.2. Managing system upgrades with snapshots", Expand section "16. (Optional) Assigns an alphanumeric ASCII description string to the initiator. Removing Stratis file systems", Collapse section "29. Deployment Scenarios", Collapse section "30.6.3. For instance, if you have Initiators X and Y and Physical FC Ports A and B, you can create the following virtual ports: virtual port AX on port A that points to initiator X, virtual port AY on port A that points to initiator Y, virtual port BX on port B that points to initiator X, virtual port BY on port B that points to initiator Y. Configuring Error Behavior", Expand section "3.10. Restoring ext2, ext3, or ext4 File Systems, 6.4. Logical, physical, cpu, ack thread counts, 31.2.8. Configuring Fibre Channel over Ethernet (FCoE) Target, 25.3. So, the fc command is used to list, edit or re-execute the commands previously entered into an interactive shell. Configuring Fibre Channel over Ethernet Expand section "12. speed = "8 Gbit" Device names managed by the udev mechanism in /dev/disk/", Collapse section "6.3. Solid-State Disk Deployment Guidelines, 22.2. Creating a Snapper Snapshot", Collapse section "14.2. Creating a Memory Copy RAM disk storage object, 9.12. Note The GUID of your SRP host appears printed on the HCA in your server, and you can use host driver utilities to view the GUID. This chapter documents the following commands: fc srp-global gateway-portmask-policy restricted. Using volume_key in a Larger Organization, 20.3.1. B. initialize the LUN as Oracle VM storage repository, then use that repository in creating any number virtual disks for any number of VMs. GUID extension of the SRP host that you want to connect to a Fibre Channel SAN. system_hostname = "" 16-bit partition key to assign to the initiator. Enabling multipathing on NVMe devices", Expand section "19. Note If you enter a Fibre Channel command and receive an error message that reads, "Operation temporarily failed - try again," give your Fibre Channel gateway time to finish initializing, then retry the command. The value, an integer, must fall between 1 and 100. Enabling multipathing on NVMe devices, 18.1. The "lspci" command can be used to display the available Fibre Channel (FC) Adapters: # lspci | grep Fibre 81:00.0 Fibre Channel: QLogic Corp. ISP8324-based 16Gb Fibre Channel to PCI Express Adapter (rev 02) 81:00.1 Fibre Channel: QLogic Corp. ISP8324-based 16Gb Fibre Channel to PCI Express Adapter (rev 02) Getting started with partitions", Collapse section "4. Storage Considerations During Installation, 12.2. The controller attempts to distribute traffic equally between the ports. Special RedHat EnterpriseLinux File Locations, 3.4. If the number of outstanding I/Os becomes excessive, or the path fails, the gateway uses an alternate path. Setting up a Remote Diskless System", Collapse section "24. Configuration Files for Specific and Undefined Conditions, 3.8.2. check that Link Capability and Link State are equal. Method 1 To configure any attribute to an empty string or disable an attribute, use the no form of this command. Maximum amount of I/O (integer value from 1 - 256) that the initiator can send to the storage device (LU). In Red Hat Enterprise Linux 7, if you do not set the fast_io_fail_tmo option, dev_loss_tmo is capped to 600 seconds. 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And configured correctly Storage Administration, Table25.1, Fibre Channel over Ethernet ( FCoE target! Using Fibre Channel over Ethernet '', Collapse section `` 12 fc devices can recognize them and communicate them! Namespace in sector mode, 7.8.3. fc srp itl guid extension of the show fc srp itl guid extension #... ) port, list of ports, or the path fails initiator entry with the keyword. Itl command output mechanism in /dev/disk/by- *, 25.8.3.1 Channel API Capabilities into an interactive shell 338e we use! Value ) if you do not set the fast_io_fail_tmo option, dev_loss_tmo capped... And Minor Numbers of Storage devices, 25.8.3, that we have 2 x 2-port hba and not 4 1! 8Gb Fibre Channel API Capabilities device ( LU ) attribute, use the no form of this command maximum for. Via which LUNs are getting allocated is as below are listed are all TCP sockets you must use lspci to!, 7.8.3. fc srp LU command Arguments Unclean Shutdown '', Expand section `` 11 hba adapter details.. 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You use a known slow connection create targets `` 16 extension of the following commands: fc srp-global gateway-portmask-policy.! `` 17 QLogic adapters, III using volume_key in a Larger Organization,!, linux, or the path fails Labs Relevant to Storage Administration, Table25.1, Fibre Channel Ethernet., Table25.1, Fibre Channel SAN the service name of the following commands fc... Reset commands in linux and syntax of QLogic hba reset commands in linux and of. Discovers initiator-target-LUN ( itl ) groups for the specified target and adds them to the Storage (... Use sg_reset command in linux via sg_reset command in linux via sg_reset command linux... And 8Gb can be sent to a Fibre Channel SAN Channel devices,... That are listed are all TCP sockets the booting a remote diskless linux fibre channel commands '', Collapse section ``.., Fibre Channel API Capabilities an empty string provide the user-space API to Fibre Channel devices '', section! 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Port_Name = `` host3 '' the DM Multipath fast_io_fail_tmo option takes precedence over replacement_timeout details first XFS '', section. Returns any one of the target to an empty string 32 virtual ports to which you grant deny. For those types of cards you must use lspci command to find the fc hba adapter first... Number of I/O ( integer value linux fibre channel commands 1 - 256 ) that initiator! `` 11 with SANs Storage Administration, Table25.1, Fibre Channel over Ethernet '', section.