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Maxtor Atlas 10K V 5-137
Table 5-184 Extent Descriptors-Data Format
The Reservation Type field defines the type of reservation in effect for the extent
being reserved. Available types of reservations are shown in Table 5-185.
Table 5-185 Reservation Types
RelAdr is always 0: The Maxtor Atlas 10K V hard disk drive does not support relative
addressing.
If both the LongID and the Extent bits = 1, then the parameter list takes the format
shown in Table 5-186.
Table 5-186 Parameter List When LongID and Extent Bits = 1-Data Format
If the LongID bit = 1 and the Extent bit = 0, then the parameter list length is eight
and the parameter list has the format shown in Table 5-187.
Table 5-187 RESERVE (10) ID Only Parameter List-Data Format
Bit
Byte
76543210
0 Reserved RelAdr Reservation Type
1 - 3
(MSB)
Number of Blocks
(LSB)
4 - 7
(MSB)
Logical Block Address
(LSB)
Reservation Type Description
00b
READ shared. No write operations are permitted by any initiator to the re-
served extent. Any initiator may read from the extent.
01b
WRITE exclusive. No other initiator may write to the indicated extent.
Any initiator may read from the extent.
10b
READ exclusive. While this reservation is active, no other initiator may be
permitted to read to the indicated extent.
11b
Exclusive access. While this reservation is active, no other initiator is per-
mitted any access to the reserved extent.
Bit
Byte
7654321 0
0 - 7
(MSB)
Third Party Device ID
(LSB)
8 - n
(MSB)
Extent Descriptors
(See Figure 5-91 Above)(LSB)
Bit
Byte
76543210
0 - 7
(MSB)
Third Party Device ID
(LSB)