nvme-sanitize - Man Page

nvme sanitize <device> [--no-dealloc | -d] [--oipbp | -i]
                        [--owpass=<overwrite-pass-count> | -n <overwrite-pass-count>]
                        [--ause | -u] [--sanact=<action> | -a <action>]
                        [--ovrpat=<overwrite-pattern> | -p <overwrite-pattern>]
                        [--emvs | -e] [--force]
                        [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

For the NVMe device given, sends a Sanitize command and provides the result.

The <device> parameter is mandatory NVMe character device (ex: /dev/nvme0).

On success it returns 0, error code otherwise.

-d,  --no-dealloc

No Deallocate After Sanitize: If set, then the controller shall not deallocate any logical blocks as a result of successfully completing the sanitize operation. If cleared, then the controller should deallocate logical blocks as a result of successfully completing the sanitize operation. This bit shall be ignored if the Sanitize Action field is set to 001b (i.e., Exit Failure Mode).

-i,  --oipbp

Overwrite Invert Pattern Between Passes: If set, then the Overwrite Pattern shall be inverted between passes. If cleared, then the overwrite pattern shall not be inverted between passes. This bit shall be ignored unless the Sanitize Action field is set to 011b (i.e., Overwrite).

-n <overwrite-pass-count>, --owpass=<overwrite-pass-count>

Overwrite Pass Count: This field specifies the number of overwrite passes (i.e., how many times the media is to be overwritten) using the data from the Overwrite Pattern field of this command. A value of 0 specifies 16 overwrite passes. This field shall be ignored unless the Sanitize Action field is set to 011b (i.e., Overwrite).

-u,  --ause

Allow Unrestricted Sanitize Exit: If set, then the sanitize operation is performed in unrestricted completion mode. If cleared then the sanitize operation is performed in restricted completion mode. This bit shall be ignored if the Sanitize Action field is set to 001b (i.e., Exit Failure Mode).

-a <action>, --sanact=<action>

Sanitize Action:

Value	Definition
0x00	Reserved
0x01 | exit-failure	Exit Failure Mode
0x02 | start-block-erase	Start a Block Erase sanitize operation
0x03 | start-overwrite	Start an Overwrite sanitize operation
0x04 | start-crypto-erase	Start a Crypto Erase sanitize operation
0x05 | exit-media-verification	Exit Media Verification State

-p <overwrite-pattern>, --ovrpat=<overwrite-pattern>

Overwrite Pattern: This field is ignored unless the Sanitize Action field in Command Dword 10 is set to 011b (i.e., Overwrite). This field specifies a 32-bit pattern that is used for the Overwrite sanitize operation.

-e,  --emvs

Enter Media Verification State: If set, then the Media Verification state shall be entered if sanitize processing completes successfully. If cleared, then this bit shall have no effect. If SANACT field does not specify starting a sanitize operation (i.e., is set to any value other than 010b, 011b, or 100b), then this bit shall be ignored by the controller.

--force

Ignore namespace is currently busy and performed the operation even though.

-o <fmt>, --output-format=<fmt>

Set the reporting format to normal, json or binary. Only one output format can be used at a time.

-v,  --verbose

Increase the information detail in the output.

• Has the program issue Sanitize Command :

  # nvme sanitize /dev/nvme0 -a 0x02
  # nvme sanitize /dev/nvme0 --sanact=0x01
  # nvme sanitize /dev/nvme0 --sanact=start-overwrite

Part of the nvme-user suite.