raid.read events

12/07/2023 Contributors

raid.read.cksum.blk.err

Deprecated: Deprecated as of version 9.9.1 because this EMS does not appropriately describe the checksum block error.
Severity: NOTICE
Description: This message occurs when the system detects a checksum block media error in an advanced zoned checksums(AZCS) RAID group during a read operation. Data ONTAP® takes appropriate recovery actions. Other events describe those actions.
Corrective Action: (None).
Syslog Message: Checksum block read error on %s%s for blocks [#%llu - #%llu] during RAID group I/O.
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Information about the disk object, including disk name, path, shelf, bay, serial number, vendor, model, RPM, and carrier serial number.
blockNum (LONGINT): First physical disk block number containing the error.
LblockNum (LONGINT): Last physical disk block number containing the error.

Severity: NOTICE
Description: This message occurs when the system detects a checksum block media error in an advanced zoned checksums(AZCS) RAID group during a read operation. As a result checksum information is not available. Data ONTAP® takes appropriate recovery actions to reconstruct the block. Other events describe those actions.
Corrective Action: (None).
Syslog Message: Checksum block is not available on %s%s for blocks [#%llu - #%llu] during RAID group I/O.
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Information about the disk object, including disk name, path, shelf, bay, serial number, vendor, model, RPM, and carrier serial number.
blockNum (LONGINT): First physical disk block number containing the error.
LblockNum (LONGINT): Last physical disk block number containing the error.

Severity: NOTICE
Description: This message occurs when the system detects a block number mismatch during a read operation. The expected Virtual Block Number (VBN)/Disk Block Number (DBN) is not the same as the stored VBN/DBN from the checksum entry, indicating that the block is read from the wrong location. Data ONTAP® makes appropriate recovery actions. Other events describe those actions.
Corrective Action: (None).
Syslog Message: Block number mismatch on %s%s: stored_dbn = %u, expected_dbn = %llu; stored_vbn = %llu, expected_vbn = %llu during a read operation.
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Information about the disk object, including disk name, path, shelf, bay, serial number, vendor, model, RPM, and carrier serial number.
stored_dbn (INT): Physical disk block number stored in the checksum entry.
expected_dbn (LONGINT): Expected physical disk block number.
stored_vbn (LONGINT): Volume block number stored in the checksum entry.
expected_vbn (LONGINT): Expected volume block number.

Severity: NOTICE
Description: This message occurs when the system detects an invalid checksum entry during a read operation. The embedded checksum computed over the checksum entry do not match, indicating the corruption of the checksum entry. Data ONTAP® makes appropriate recovery actions. Other events describe those actions.
Corrective Action: (None).
Syslog Message: Invalid checksum entry on %s%s, block #%llu, during a read operation.
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Information about the disk object, including disk name, path, shelf, bay, serial number, vendor, model, RPM, and carrier serial number.
blockNum (LONGINT): Physical disk block number containing the error.

Severity: NOTICE
Description: This message occurs when the system detects a checksum error during a read operation. The checksum computed does not match the stored checksum, indicating that the block is corrupted. Data ONTAP® makes appropriate recovery actions. Other events describe those actions.
Corrective Action: (None).
Syslog Message: Checksum error on %s%s, block #%llu.
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Information about the disk object, including disk name, path, shelf, bay, serial number, vendor, model, RPM, and carrier serial number.
blockNum (LONGINT): Physical block number containing the error.

Severity: NOTICE
Description: This message occurs when the system detects an empty checksum entry during a read operation. The checksum entry is zeroed, but the corresponding block is not zeroed. Data ONTAP® makes appropriate recovery actions. Other events describe those actions.
Corrective Action: (None).
Syslog Message: Empty checksum entry for non-zeroed block on %s%s, block #%llu, during a read operation.
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Information about the disk object, including disk name, path, shelf, bay, serial number, vendor, model, RPM, and carrier serial number.
blockNum (LONGINT): Physical disk block number containing the error.

Severity: NOTICE
Description: This message occurs when rg i/o detects a single-disk medium error
Corrective Action: (None).
Syslog Message: Read error on %s%s, block #%llu
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Formatted information of disk object that contains the error.
blockNum (LONGINT): The physical block number containing the error.
shelf (STRING): Shelf identifier where the disk is located
bay (STRING): Disk bay within the shelf where disk is located
vendor (STRING): Name of the vendor of the disk
model (STRING): Model string of the disk drive
firmware_revision (STRING): Firmware revision number of the disk
serialno (STRING): Serial number of the disk
disk_type (INT): Type of disk drive
disk_rpm (STRING): Rotational speed of disk in RPM
carrier (STRING): Unique ID of the carrier in which the disk is installed.
site (STRING): For a MetroCluster(tm) configuration, indicates the site {Local|Remote} where the disk is located. For non-MetroCluster configurations, site is 'Local'.

Severity: NOTICE
Description: This message occurs when rg i/o detects a single-disk recommend reassign error
Corrective Action: (None).
Syslog Message: Block recommended for reassignment on %s%s, block #%llu
Parameters: owner (STRING): Owner of the affected aggregate.
disk_info (STRING): Formatted information of the disk object that contains the error.
blockNum (LONGINT): The physical block number containing the error.
shelf (STRING): Shelf identifier where the disk is located
bay (STRING): Disk bay within the shelf where disk is located
vendor (STRING): Name of the vendor of the disk
model (STRING): Model string of the disk drive
firmware_revision (STRING): Firmware revision number of the disk
serialno (STRING): Serial number of the disk
disk_type (INT): Type of disk drive
disk_rpm (STRING): Rotational speed of disk in RPM
carrier (STRING): Unique ID of the carrier in which the disk is installed.
site (STRING): For a MetroCluster(tm) configuration, indicates the site {Local|Remote} where the disk is located. For non-MetroCluster configurations, site is 'Local'.