nvme-error-log (1) Linux Manual Page
nvme-error-log – Send NVME Error log page request, return result and log
Synopsis
nvme error-log <device> [–namespace-id=<nsid> | -n <nsid>]
[–log-entries=<entries> | -e <entries>]
[–raw-binary | -b]
Description
Retrieves NVMe Error log page from an NVMe device and provides the retuned 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.
Options
-n <nsid>, –namespace-id=<nsid>- Retrieve the Error Log for the given nsid. This is optional and its success may depend on the device’s capabilities to provide this log on a per-namespace basis (see the NVMe Identify Controller for this capability). The default nsid to use is 0xffffffff for the device global error log.
-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.
Examples
- • 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.