nvme-pred-lat-event-agg-log - Man Page

nvme pred-lat-event-agg-log <device>
                        [--log-entries=<log_entries> | -e <log_entries>]
                        [--rae | -r] [--raw-binary | -b]
                        [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

Retrieves the NVMe Predictable Latency Event Aggregate 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 Predictable Latency Event Aggregate Log Page 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​.

-e <log_entries>, --log-entries=<log_entries>

Retrieve the Predictable Latency Event Aggregate Log pending entries​. This argument is mandatory and its success may depend on the device’s statistics to provide this log For More details see NVM Express 1​.4 Spec​. Section 5​.14​.1​.11​. The maximum number of log entries supported is 2044 for the device​.

-r,  --rae

Retain an Asynchronous Event​.

-b,  --raw-binary

Print the raw Predictable Latency Event Aggregate 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​.

• Print the Predictable Latency Event Aggregate Log page in a human readable format:

  # nvme pred-lat-event-agg-log /dev/nvme0

• Print the raw Predictable Latency Event Aggregate log to a file:

  # nvme pred-lat-event-agg-log /dev/nvme0 --raw-binary > pred_lat_agg_log​.raw

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

Part of the nvme-user suite

nvme(1).