nvme_error_log_page - Man Page

struct nvme_error_log_page {
   __le64 error_count;
   __le16 sqid;
   __le16 cmdid;
   __le16 status_field;
   __le16 parm_error_location;
   __le64 lba;
   __le32 nsid;
   __u8 vs;
   __u8 trtype;
   __u8 csi;
   __u8 opcode;
   __le64 cs;
   __le16 trtype_spec_info;
   __u8 rsvd[21];
   __u8 log_page_version;
};

error_count

Error Count: a 64-bit incrementing error count, indicating a unique identifier for this error. The error count starts at 1h, is incremented for each unique error log entry, and is retained across power off conditions. A value of 0h indicates an invalid entry; this value is used when there are lost entries or when there are fewer errors than the maximum number of entries the controller supports. If the value of this field is FFFFFFFFh, then the field shall be set to 1h when incremented (i.e., rolls over to 1h). Prior to NVMe 1.4, processing of incrementing beyond FFFFFFFFh is unspecified.

sqid

Submission Queue ID: indicates the Submission Queue Identifier of the command that the error information is associated with. If the error is not specific to a particular command, then this field shall be set to FFFFh.

cmdid

Command ID: indicates the Command Identifier of the command that the error is associated with. If the error is not specific to a particular command, then this field shall be set to FFFFh.

status_field

Bits 15-1: Status Field: indicates the Status Field for the command that completed. If the error is not specific to a particular command, then this field reports the most applicable status value. Bit 0: Phase Tag: may indicate the Phase Tag posted for the command.

parm_error_location

Parameter Error Location: indicates the byte and bit of the command parameter that the error is associated with, if applicable. If the parameter spans multiple bytes or bits, then the location indicates the first byte and bit of the parameter. Bits 10-8: Bit in command that contained the error. Valid values are 0 to 7. Bits 7-0: Byte in command that contained the error. Valid values are 0 to 63.

lba

LBA: This field indicates the first LBA that experienced the error condition, if applicable.

nsid

Namespace: This field indicates the NSID of the namespace that the error is associated with, if applicable.

vs

Vendor Specific Information Available: If there is additional vendor specific error information available, this field provides the log page identifier associated with that page. A value of 0h indicates that no additional information is available. Valid values are in the range of 80h to FFh.

trtype

Transport Type (TRTYPE): indicates the Transport Type of the transport associated with the error. The values in this field are the same as the TRTYPE values in the Discovery Log Page Entry. If the error is not transport related, this field shall be cleared to 0h. If the error is transport related, this field shall be set to the type of the transport - see enum nvme_trtype.

csi

Command Set Indicator: This field contains command set indicator for the command that the error is associated with.

opcode

Opcode: This field contains opcode for the command that the error is associated with.

cs

Command Specific Information: This field contains command specific information. If used, the command definition specifies the information returned.

trtype_spec_info

Transport Type Specific Information

rsvd

Reserved: [62:42]

log_page_version

This field shall be set to 1h. If set, csi and opcode will have valid values.