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Pairsyncwait, Pairsyncwait 184 – HP XP RAID Manager Software User Manual

Page 184

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184

HP StorageWorks Disk Array XP RAID Manager: User’s Guide

pairsyncwait

Synchronization waiting command

Description

The pairsyncwait command is used to confirm that a mandatory write (and
all writes before it) has been stored in the DFW (write) cache area of the
RCU.

The command gets the latest P-VOL async-CA sequence # of the main
control unit (MCU) side file and the sequence # of the most recently
received write at the RCU DFW (with the correct CTGID, group or
raw_device

) and compares them at regular intervals.

If the RCU sequence # exceeds the value of the designated MCU sequence
# within the time specified, this command reports a 0 return code (meaning
P-VOL/S-VOL synchronization to the desired point is achieved).

The –nowait option shows the latest sequence # (Q-marker) of the
designated MCU P-VOL and CTGID. The Q-marker is displayed in 10
hexadecimal characters.

Syntax

pairsyncwait

{ –nomsg | –d pair_vol | –d[g] raw_device [ MU# ] | –d[g]

seq# LDEV#

[ MU# ] | -fq | –g group | -h | –m marker | –nowait | -q |

–t timeout | -z[x] }

Arguments

–nomsg

Suppresses messages to be displayed. It is used to
execute a command from a user program.

If used, this argument must be specified at the
beginning of a command argument.

–d

pair_vol

Used to specify a logical (named) volume that is
defined in the configuration definition file. When this
option is specified, the command is executed for the
specified paired logical volumes.

–d[g]

raw_device [ MU# ]