HP XP Continuous Access Software - Manual (Page 165)

165
pairresync
Resynchronize a pair
Description
The pairresync command resumes updating the secondary volume based
on the primary volume to reestablish pairing. If no data has been written in
the secondary volume, differential P-VOL data is copied. If data has been
written in the secondary volume, differential data from the P-VOL is
copied to the S-VOL. The changes on the SVOL are overwritten. The
–swap option updates the PVOL based on the SVOL so that the PVOL
becomes the SVOL and the SVOL becomes the PVOL. Pair
resynchronization can be specified even while the primary volume is being
accessed. When the pairresync command is issued, any write access to the
secondary volume is disabled.
The pairresync command puts a paired volume currently in the suspend
state [PSUS or SSUS] into a PAIR state.
This command can be applied to each paired logical volume or each group.
Continuous Access
This command is rejected if any P-VOL or S-VOL is undergoing
maintenance, such as copy resynchronization. If the P-VOL or S-VOL is in
a blocked state, an error code is returned.
UNIX
Caution
Because data in the secondary volume is renewed by pairresync, the
secondary volume must be not be in a mounted state on any UNIX system.
MPE/iX
Caution
Before issuing this command, ensure that the secondary volume is not
mounted on any MPE/iX system. If it is, VSCLOSE that volume set and
de-configure the LDEVs using IOCONFIG, the online device configuration
utility program.