Use the lsmdisklba command to
list the MDisk and logical block address (LBA) for the specified volume LBA.
Syntax
lsmdisklba
-vdisklbavdisklba
[ -copyid ]
[ -delim
delimiter ]
[ - nohdr ]
-vdisk { vdisk_id | vdisk_name }
Parameters
- -vdisklbavdisklba
- (Required) Specifies the 64bit hexadecimal logical block address (LBA) on the volume. The LBA must be specified in hex, with a 0x prefix.
- -copyid
- (Optional) Specifies the volume copy ID to
list the MDisk and LBA for. If this parameter is not specified, the
command lists MDisks and LBAs for all volume copies.
- -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 possible 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 one-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.
- vdisk_id | vdisk_name
- (Required) Specifies the volume name or ID.
Description
The lsmdisklba command
returns the logical block address (LBA) of the MDisk that is
associated with the volume LBA. For mirrored volume, the command lists the MDisk LBA for both
the primary and the copy.
If applicable, the command also lists
the range of LBAs on both the volume and MDisk
that are mapped in the same extent, or for thin-provisioned disks,
in the same grain. If a thin-provisioned volume is offline and the specified LBA is not allocated, the command displays
the volume LBA range only.
The mdisk_lba field provides the corresponding
LBA on the real capacity for the input LBA. For compressed volume
copies it is empty, and the system displays only the range of physical
LBAs where the compressed input LBA is located.
Table 1 summarizes the data that
can be returned with this command.
Table 1. lsmdisklba command output
| Field |
Fully allocated, single
copy volume |
LBA not allocated on
thin-provisioned volume |
Mirrored volume with
one normal copy and one offline thin-provisioned copy |
| Normal copy |
Thin-provisioned copy |
| copy_id |
yes |
yes |
yes |
yes |
| mdisk_id |
yes |
no |
yes |
no |
| mdisk_name |
yes |
no |
yes |
no |
| type |
allocated |
unallocated |
allocated |
offline |
| mdisk_lba |
yes |
no |
yes |
no |
| mdisk_start |
yes |
no |
yes |
no |
| mdisk_end |
yes |
no |
yes |
no |
| vdisk_start |
yes |
yes |
yes |
yes |
| vdisk_end |
yes |
yes |
yes |
yes |
An invocation example
lsmdisklba -vdisk 0 -vdisklba 0x123
The resulting output:
copy_id mdisk_id mdisk_name type mdisk_lba mdisk_start mdisk_end vdisk_start vdisk_end
0 1 mdisk1 allocated 0x0000000000100123 0x0000000000100000 0x00000000001FFFFF 0x00000000 0x000FFFFF