ADIC Time Clock 6-00028-01 Rev A Manual De Usuario

4-48

Utility Reference

6-00028-01 Rev A

Output for streaming tape I/O (

quedisplay

 

-c

) 

looks similar to the example shown in the following 
example: 

# quedisplay -c

VOLUME vid=7, num_reads=0, num_writes=30

WRITEQ rid=27931, 
fptr=0xc00000000031c078, vol=3, 
fnode_flags=0xb040804
Request Cache blocks:
~
cbq_ptr: 0x04030c90

UNADJ_cbque_flink: 0x04030cb
UNADJ_cbque_blink: 0x04030c
tp_sblk : 0x0000260f
tp_eblk : 0x0000264e
tp_iocc : 0x01000000
cbq_stat: PEND
cbq_cbdata:

c_blno: 0x00230010
c_bcnt: 0x01000000
c_boff: 0x27000000

>
cbq_ptr: 0x04030cb8

UNADJ_cbque_flink: 0x04030c
UNADJ_cbque_blink: 0x04030c
tp_sblk : 0x0000264f
tp_eblk : 0x00000000
tp_iocc : 0x00e00000
cbq_stat: QUED
cbq_cbdata:

c_blno: 0x40230010
c_bcnt: 0x01000000

The tp_sblk and tp_eblk fields are the start 
and end archive device block locations 
where the cache block is written. 

The cbq_stat field is the current 
state of the streaming cache block.

The tp_iocc field is the byte count 
associated with the cache block.

Cache block 0x40230010 is currently 
being copied.   (This can be deduced from 
(cbq_stat == QUED) && (tp_iocc > 0) && 
(tp_iocc < c_bcnt)).

Cache block number (c_blno) 0x00230010 
is pending physical I/O completion. 

The cbq_cbdata field is an I/O descriptor 
containing the device number, block address 
offset, byte count, and file offset of the cache 
device data being copied to tape.