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NAME

na_reboot - stop and then restart the filer

SYNOPSIS

reboot [ -t minutes ]
reboot [ -s ]
reboot [ -r ]
reboot [ -d dump_string ]

DESCRIPTION

reboot halts the filer and then restarts it. reboot is commonly used to allow modified configuration files to take effect or to run a newly installed version of Data ONTAP.

NFS clients can maintain use of a file over a halt or reboot, although the filer will fail to respond during that time. CIFS, FCP, and iSCSI clients cannot safely maintain use of a file over a halt or reboot. If the filer is running CIFS, FCP or iSCSI, you may use the -t option to specify the time before shutdown. If reboot is invoked without -t, it displays the number of CIFS users, the number of open CIFS files, the number of mapped LUNs and the number of connected FCP and iSCSI clients. Then it prompts you for the number of minutes to delay. cifs terminate automatically notifies all CIFS clients that a CIFS shut-down is scheduled in mins minutes, and asks them to close their open files. CIFS files that are still open at the time the filer reboots will lose writes that had been cached but not written. FCP and iSCSI will not notify clients, but will allow administrators to confirm that the mapped LUNs are not in use. LUNs that are in use at the time the filer reboots will result in client failures.

reboot logs a message in the /etc/messages file (see messages(5)) file to indicate that the filer was rebooted on purpose.

OPTIONS

-t minutes
Reboots after the indicated number of minutes. Applies only if the filer is running CIFS, FCP or iSCSI.

-s
Initiates a clean system shutdown, followed by a power cycle reboot. (When the -s flag is omitted, reboot performs a clean shutdown but does not power cycle the appliance.) The reboot -s command is equivalent to physically turning the power to the head off and back on after typing "halt".

The reboot -s command does not power cycle the appliance shelves.

-r
Bypasses the shutdown process and initiates a power cycle reboot, without first performing a clean system shutdown. (When the -r flag is omitted, reboot performs a clean shutdown but does not power cycle the appliance.) The reboot -r command is equivalent to physically turning the power to the head off and back on, without first halting the system.

Use this command only when instructed to do so by technical support.

The reboot -r command does not power cycle the appliance shelves.

-d dump_string
Dumps system core and reboots the filer. This results in a dirty shutdown; cached data will not be flushed to disk. The dump_string should indicate the reason for the core dump. Because it results in a dirty shutdown, the -d option generally should not be used for normal maintenance (see NOTES in na_halt(1)).

CLUSTER CONSIDERATIONS

You cannot use the reboot command in partner mode to reboot a failed filer.

If you reboot the live filer that has taken over the failed filer, after the reboot, the live filer reinitiates the takeover process.

SEE ALSO

na_download(1), na_halt(1), na_partner(1), na_savecore(1), na_setup(1)


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