From 5b7ddc4bd2dcdde201ffa2681ede9a0a029bad96 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 2 Jul 2021 22:47:46 +0200 Subject: Adding upstream version 1.14. Signed-off-by: Daniel Baumann --- Documentation/nvme-persistent-event-log.txt | 76 +++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/nvme-persistent-event-log.txt (limited to 'Documentation/nvme-persistent-event-log.txt') diff --git a/Documentation/nvme-persistent-event-log.txt b/Documentation/nvme-persistent-event-log.txt new file mode 100644 index 0000000..833491f --- /dev/null +++ b/Documentation/nvme-persistent-event-log.txt @@ -0,0 +1,76 @@ +persistent-event-log(1) +======================= + +NAME +---- +nvme-persistent-event-log - Send NVMe persistent event log page request, +returns result and log + +SYNOPSIS +-------- +[verse] +'nvme persistent-event-log' [--action= | -a ] + [--log-len= | -l ] + [--raw-binary | -b] + [--output-format= | -o ] + +DESCRIPTION +----------- +Retrieves the NVMe persistent event log page from an NVMe device +and provides the returned structure. + +The 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=:: + 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=:: + Allocates a buffer of bytes size and requests this + many bytes be returned in the constructed NVMe command. This + param is mandatory. If 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 :: +--output-format=:: + Set the reporting format to 'normal', 'json', or 'binary'. + Only one output format can be used at a time. + +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 -- cgit v1.2.3