Use the lsdrivelba command to map array MDisk logical block address
(LBA) to a set of drives.
Syntax
lsdrivelba [ -nohdr ] [ -delimdelimiter ] { -mdisklbalba } { -mdisk { mdisk_id | mdisk_name } }
Parameters
- -nohdr
- (Optional) By default, headings are displayed for each column of data in a concise style view,
and for each item of data in a detailed style view. The -nohdr parameter
suppresses the display of these headings.
Note: If there is no data to be displayed, headings are not
displayed.
- -delimdelimiter
- (Optional) By default in a concise view, all columns of data are space-separated. The
width of each column is set to the maximum width of each item of data. In a detailed view, each item
of data has its own row, and if the headers are displayed, the data is separated from the header by
a space. The -delim parameter overrides this behavior. Valid input for the
-delim parameter is a 1-byte character. If you enter -delim
: on the command line, the colon character (:) separates all items of data
in a concise view; for example, the spacing of columns does not occur. In a detailed view, the data
is separated from its header by the specified delimiter.
- -mdisklba lba
- (Required) The logical block address (LBA) on the MDisk. The LBA must be specified in hex, with a 0x prefix.
- -mdiskmdisk_id | mdisk_name
- (Required) The ID or name of the MDisk.
Description
This
command maps the array MDisk LBA to a set of drives.
The system provides volumes that have
LBAs for 512-byte block sizes, but back-end disks that have a block
size of either 512 or 4096 bytes can also be used. Drives are listed
in their physical size.
Use
the lsdrive command to display the drive block
size, and use the lsdrive or lsarray command
to list each object (the drive and the MDisk).
lsdrivelba output describes possible
outputs.
Table 1. lsdrivelba outputserial-attached SCSI |
| | (SAS)
Attribute |
Value |
|---|
| drive_id |
The ID of drive; blank if no configured
array member exists (for example, in a degraded array). |
| type |
The type of information on the disk: - parity, in which LBA range contains parity (RAID
levels 5 and 6 only)
- qparity, in which LBA range contains qparity (RAID
level 6 only)
- data, in which LBA range contains data
|
| drive_lba |
The LBA on the drive. |
| drive_start |
The start of range of LBAs (strip) on the
drive. |
| drive_end |
The end of range of LBAs (strip) on the
drive. |
| mdisk_start |
The start of range of LBAs (strip) on the
array MDisk. |
| mdisk_end |
The end of range of LBAs (strip) on the
array MDisk. |
An invocation example
lsdrivelba -delim : -mdisklba 0x000 -mdisk 2
The resulting output:
drive_id:type:drive_lba:drive_start:drive_end:mdisk_start:mdisk_end
0:data:0x0000000000000000:0x0000000000000000:0x0000000000000200:0x0000000000000000:0x0000000000000200
4:parity:0x0000000000000000:0x0000000000000000:0x0000000000000200:0x0000000000000000:0x0000000000000200