User Manual

SCSI Commands Reference Manual, Rev. J 339
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5.2.13 Logical Block Provisioning log page (0Ch/00h)
5.2.13.1 Logical Block Provisioning log page overview
Using the format defined in table182, the Logical Block Provisioning log page reports the logical block provisioning status of the
logical unit. The parameter codes for the Logical Block Provisioning log page are listed in table 313.
The Logical Block Provisioning log page has the format defined in table 314.
DS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field
The DS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field are described in 5.2.2. The DS bit, the SPF bit, the PAGE CODE
field, and the SUBPAGE CODE field shall be set to the values shown in table 314 for the Logical Block Provisioning log page.
Table 313 Logical Block Provisioning log page parameters
Parameter code
[a]
Description
Resettable or
Changeable
[b]
Reference
Support
Required
Resources that are associated with thresholds (0000h to 00FFh)
0000h Reserved
0001h Available LBA Mapping Resource Count Never 5.2.13.1
Optional
[c]
0002h Used LBA Mapping Resource Count Never 5.2.13.1
0003h Available Provisioning Resource Percentage Never 5.2.13.1
0004h - 00FFh Reserved
Resources that are not associated with thresholds (0000h to 00FFh)
0100h De-duplicated LBA Resource Count Never 5.2.13.1
Optional0101h Compressed LBA Resource Count Never 5.2.13.1
0102h Total Efficiency LBA Resource Count Never 5.2.13.1
0103h - FFEFh Reserved
FFF0h - FFFFh Vendor Specific
[a] Parameter codes 0000h to 00FFh are coordinated with the THRESHOLD RESOURCE field in the threshold descriptor of the
Logical Block Provisioning mode page (see 5.3.19).
[b] The keywords in this column – Always, Reset Only, and Never – are defined in 5.2.2.3.
[c] If this log page is supported, then at least one parameter shall be supported. A logical block provisioning log parameter in
the range 0001h to 00FFh should be provided to report resource usage for each threshold resource for which a threshold
descriptor in the Logical Block Provisioning mode page (see 5.3.19) is available.
Table 314 Logical block provisioning log page
Bit
Byte
7 6 5 4 3 2 1 0
0 DS (1b) SPF (0b) PAGE CODE (0Ch)
1 SUBPAGE CODE (00h)
2 (MSB)
PAGE LENGTH (n-3)
3 (LSB)
Logical block provisioning log parameter
4
Logical block provisioning log parameter [first] (if any) (see table 313)
. . .
. . .
. . .
Logical block provisioning log parameter [last] (if any) (see table 313)
n