NAME

       nvme-persistent-event-log - Send NVMe persistent event log page request, returns result and log

SYNOPSIS

       nvme persistent-event-log <device> [--action=<action> | -a <action>]
                               [--log-len=<log-len> | -l <log-len>] [--raw-binary | -b]
                               [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

DESCRIPTION

       Retrieves the NVMe persistent event log page from an NVMe device and provides the returned structure.

       The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a
       namespace block device (ex: /dev/nvme0n1).

       On success, the returned persistent event log structure may be returned in one of several ways depending
       on the option flags; the structure may parsed by the program and printed in a readable format or the raw
       buffer may be printed to stdout for another program to parse.

OPTIONS

       -a <action>, --action=<action>
           While try to retrieve this log action the controller shall take during processing this persistent log
           page command. This mandatory field, based on the value issued it may Read Log Data, Establish Context
           and Read Log Data or Release Context can occur. For More details see NVM Express 1.4 Spec. Section
           5.14.1.13 Persistent Event Log (Log Identifier 0Dh)

       -l <log-len>, --log-len=<log-len>
           Allocates a buffer of <log-len> bytes size and requests this many bytes be returned in the
           constructed NVMe command. This param is mandatory. If <log-len> given is 0 and action is 0, it will
           read the Total Log Length(TLL) of the page.

       -b, --raw-binary
           Print the raw persistent event log buffer to stdout.

       -o <fmt>, --output-format=<fmt>
           Set the reporting format to normal, json or binary. Only one output format can be used at a time.

       -v, --verbose
           Increase the information detail in the output.

EXAMPLES

       •   Print the persistent event log page in a human readable format:

               # nvme persistent-event-log /dev/nvme0

       •   Print the raw persistent event log to a file:

               # nvme persistent-event-log /dev/nvme0 --raw-binary > persistent_log.raw

           It is probably a bad idea to not redirect stdout when using this mode.

NVME

       Part of the nvme-user suite

NVMe                                               05/02/2025                              PERSISTENT-EVENT-L(1)