nvme-error-log − Send NVME Error log page request, return result and log
nvme
error−log <device>
[−−log−entries=<entries> | −e
<entries>]
[−−raw−binary | −b]
[−−output−format=<fmt> | −o
<fmt>]
Retrieves NVMe Error 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 error 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.
−e <entries>, −−log−entries=<entries>
Specifies how many log entries the program should request from the device. This must be at least one, and shouldn’t exceed the device’s capabilities. Defaults to 64 log entries.
−b, −−raw−binary
Print the raw error log buffer to stdout.
−o <format>, −−output−format=<format>
Set the reporting format to normal, json, or binary. Only one output format can be used at a time.
• Get the error log and print it in a human readable format:
# nvme error−log /dev/nvme0
• Print the raw output to a file:
# nvme error−log /dev/nvme0 −−raw−binary > error_log.raw
It is probably a bad idea to not redirect stdout when using this mode.
Part of the nvme−user suite