pair showpairio
Function
The pair showpairio command is used to query the host I/O list and dual-write I/O list on a specified LUN.
Format
pair showpairio lunid
Parameters
Parameter |
Description |
Value |
|---|---|---|
lunid |
LUN ID. |
To obtain the value, run "show lun general" as the administrator. |
reqType |
I/O type to be displayed. |
|
Views
Diagnostic view
Usage Guidelines
- This command must be executed on the working controller of a LUN.
- When "reqType" is set to "1", a host I/O list is displayed. When "reqType" is set to "2", a dual-write I/O list is displayed.
Example
- Query the host I/O list on a specified LUN.
ibc_os_hs:/diagnose>pair showpairio 0 1 Num objId objLba len opCode result PreCnt PostCnt QueueCnt SetDclCnt SetDclRet Flag timePoint logId reqType ------ ---------- ---------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---- ---------------- ---------------- -------
- Query the dual-write I/O list on a specified LUN.
ibc_os_hs:/diagnose>pair showpairio 0 2 Num objId objLba len opCode result PairType Flag PairStatus DclId WaitingCnt ChunkNum QueueFlag WaitCkCnt FlyingCnt PostCnt PairId SrcLun DstLun Status ------ ---------- ---------- ------ ---------- ---------- -------- -------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ------
System Response
The following table describes the parameter meanings.
Parameter |
Meaning |
|---|---|
num |
I/O number. |
objId |
LUN ID corresponding to an I/O. |
PostCnt |
Number of REQs that are processing dual-write. |
PreCnt |
Count of write preprocessing. |
result |
I/O result. |
opCode |
Command word corresponding to an I/O. |
objLba |
LBA offset corresponding to an I/O (unit: sector). |
len |
I/O length (unit: sector). |
QueueCnt |
Count of deleting dual-write REQ from a queue. |
SetDclCnt |
Count of writing DCL in postprocessing. |
SetDclRet |
Result of writing DCL in postprocessing. |
Flag |
Status of the source REQ. |
timePoint |
Point in time of an I/O. |
logId |
ID of a log in the log zone. |
reqType |
I/O object type (LUN or file system). |
PairType |
Pair type. |
PairStatus |
Pair status when an I/O is delivered. |
DclId |
DCL ID of a pair. |
WaitingCnt |
Count of I/Os that have been delivered. |
PairId |
Pair ID. |
SrcLun |
Source LUN ID of a pair. |
DstLun |
Target LUN ID of a pair. |
Status |
Current status of a pair. |
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