nvme-registry-update1
Write an attribute to a controller's registry entry
Usage
nvme {[<global-options>]
registry
update
<device>
--attr=<ATTR> | -a
<ATTR>
--value=<VAL> | -V
<VAL>}
Overview
Write an attribute to the ownership registry entry for an NVMe-oF controller. The registry is stored under /run/nvme/registry/ as one directory per live controller, with one plain-text file per attribute. The entry directory is created if it does not already exist.
The <device> is the NVMe controller name (e.g. nvme3), given as a positional argument; the /dev/ prefix is optional.
The owner attribute is normally recorded when the connection is created (e.g. by nvme connect --owner). Changing it by hand can stop an orchestrator from protecting the controller, so updating owner prompts for confirmation when run interactively; non-interactive callers (scripts) proceed without prompting. This is a guard against accidental mistakes, not access control — a user with root can edit the files under /run/nvme/registry/ directly.
Writes are atomic: a temporary file is written and synced, then renamed into place, preventing corruption under concurrent access.
Options
-
-a <ATTR>, --attr=<ATTR> -
Attribute name to write (e.g. note, owner).
-
-V <VAL>, --value=<VAL> -
New attribute value.
Options
The following options are defined at the top-level nvme command and are available to this subcommand:
-
--dry-run -
Print the command that would be executed, but do not actually execute it.
-
--no-ioctl-probing -
Disable probing for 64-bit IOCTL support.
-
--no-retries -
Disable retry logic on transient errors.
-
-o <fmt>, --output-format=<fmt> -
Set the reporting format to normal, tabular, 'json, or binary. Only one output format may be used at a time.
-
--output-format-version=<version> -
Select the output format version. Version 1 uses the original field naming, while version 2 (default) provides more consistent and script-friendly field names. Other versions are rejected.
-
--quiet -
Suppress informational messages. Errors are still reported, and --quiet cancels any --verbose for the library log level.
-
--set-options=<key=value>[,<key=value>...] -
Set libnvme library options for this invocation. Supported keys are force-4k, mi-probe-enabled, test-base-dir and test-sysfs-dir.
-
--timeout=<ms> -
Set the timeout for the command in milliseconds. infinite or -1 waits without a time limit (0xffffffff).
-
-v, --verbose -
Increase the level of detail in the output. May be specified multiple times to further increase verbosity.
These options can also be set as machine-wide defaults in nvme-cli.conf(5). A command-line flag always overrides the file.
Examples
• Attach a free-form note to nvme3:
# nvme registry update nvme3 --attr note --value "maintenance 2026-07"
• Update a previously written note:
# nvme registry update nvme3 --attr note --value "released"
Nvme
Part of the nvme-user suite