dumpmdiskbadblocks

Use the dumpmdiskbadblocks command to write the bad block counts and locations that are on a specified MDisk to a dump file for use by fix procedures.

Syntax

dumpmdiskbadblocks { object_id | object_name }

Parameters

object_id | object_name: (Required) Specifies the MDisk for which you need to dump the bad block record table.

Description

Use the dumpmdiskbadblocks command to write the bad block counts and locations that are on a specified MDisk to a readable ASCII dump file for use by fix procedures. The output consists of bad blocks for which an event log has been raised.

Use lsdumps-prefix/dumps/mdisk to list the output files. Use cleardumps-prefix/dumps/mdisk to clear the output files.

The reported event log sequence numbers correspond to the first event seen in the bad block record, which is a 512-block region.

If there are multiple event logs in the same region, the earliest event sequence is used.
If there are event logs of different types in the same region, event sequence numbers for bad blocks caused by medium errors on RAID member drives take precedence.
If a range of bad blocks runs across record boundaries, the sequence number corresponding to the last record is used.

The maximum number of dump files is 20.

An invocation example

dumpmdiskbadblocks 3

The resulting output if the MDisk has bad blocks:

Cluster name: my_cluster
Timestamp of dump: Fri Oct 31 11:27:33 2009 UTC

Mdisk id: 3
Mdisk name: mdisk3
Number of bad blocks: 6

Start LBA: 0x1234123412341234
Length: 2
Event log sequence number: 1

Start LBA: 0x5678567812341234
Length: 4
Event log sequence number: 2

The resulting output if the MDisk has no bad blocks:

Cluster name: my_cluster
Timestamp of dump: Fri Oct 31 11:27:33 2009 UTC

Mdisk id: 3
Mdisk name: mdisk3
Number of bad blocks: 0