Dell EqualLogic PS6210XS EqualLogic Host Integration Tools for Linux Version 1 - Page 111
ehcmcli Diagnostic Output
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Subcommands Optional help Options none dm create dm cleanup dm unload_switch logout status none none none --target --no-login-at-boot --verbose Argument subcommand none none none none none Description Displays a list of the ehcmcli commands and syntax. Specify a subcommand to list the syntax (for example, ehcmcli help pr). Builds the initial DM devices for all current EqualLogic devices. Removes any unmanaged DM devices (/dev/mapper devices created by ehcmd) that are no longer needed. Replaces all switch DM targets and unloads the dmswitch kernel module. Logs out and removes the given device target. Specify -no-login-at-boot to set the node.startup values for the given target to not perform the login at the next reboot. Instructs ehcmcli to gather diagnostic data and report the current multipathing status. With --verbose, enables verbose output. The following table lists the optional persistent reservation (PR) management commands. Table 44. Persistent Reservation (PR) Management Commands Subcommands pr init pr remove pr status Options --key --key none Argument key-name key-name none Description Manages the given PR key on all volumes that have the key registered on at least one path. Removes the given PR key from all volumes. Lists persistent status reservation information. The following table lists the commands related to enabling the capability to import EqualLogic storage to PowerStore. Table 45. Enabling Import Capability to PowerStore Commands Subcommands log_show Options none Argument none Description Displays Log Level and Log Location. server_port --change server_port no Displays server port that is used for communication and gives option to change to desired port. mhd_status none none Displays microhttpd status. restart_webServer none none Restarts web server in case of microhhtpd failure. recover_device --device source_wwid Recovers specified device from hung state. ehcmcli Diagnostic Output The ehcmcli diagnostic tool provides an option to gather and display diagnostic information about the status of MPIO sessions. The output includes a list of the adapters for iSCSI sessions and a list of all volumes for which multipathing is configured by ehcmd. If the list does not contain all the adapters you expect, some might be excluded from MPIO usage. Common causes for adapters to be excluded are subnet, adapter speed, or IP protocol version. Reporting verbose diagnostic information ( ehcmcli status --verbose) will include the list of excluded adapters and the reason for exclusion. To modify the adapter exclusion parameters, use rswcli -P (see Setting MPIO Parameters). Troubleshooting 111