Hitachi AMS 2000 Reference Manual page 41

Table 1-6: Pairresync Command Parameters (Continued)
Parameter
Options -FMRCF [MU#] or -FBC [MU#]: Forcibly specifies a cascading ShadowImage
(continued) or SnapShot volume for specified pair logical volumes in a TrueCopy or TCE
environment (see example in
Pairresync", on page 1-24
). If the -l option is specified, this option resyncs a cascading ShadowImage or
SnapShot volume on a local host. If no -l option is specified, this option resyncs
a cascading ShadowImage or SnapShot volume on a remote host. The target
ShadowImage or SnapShot volume must be a P-VOL.
-d[g] <seq#> <LDEV#> [MU#]: Searches a group on the configuration
definition file (local instance) for the specified LDEV, and if the specified LDEV
is contained in the group, the target volume is executed as the paired logical
volume (-d) or group (-dg). This option is effective without specification of the
"-g <group>" option. If the specified LDEV is contained in two or more groups,
the command is executed on the first group. The <seq #> <LDEV #> values
can be specified in hexadecimal (by addition of "0x") or decimal notation.
<seq #> <LDEV #> values can be specified in hexadecimal (by addition of
"0x ") or decimal notation.
-c <size>: You can use this option to specify the copying pace for the resync
operation (range = 1 to 15). If omitted, the value used for paircreate or at
previous pairresync will be used. (1 to 5: slow, 6 to 10: normal, 11 to 15: prior)
-fq <mode>: Specify "normal" or "quick" with "-split".
-nomsg: Suppresses messages to be displayed when this command is
executed. It is used to execute this command from a user program. This option
must be specified at the beginning of a command argument. The command
execution log is not affected by this option.
-l: When this command cannot utilize the remote host for host down, this
option enables a pairresync operation by the local host only. The target volume
of the local host can be P-VOL or S-VOL.
-restore: Performs reverse resync (from secondary volume to primary
volume).-swaps (TrueCopy only): Executed from the S-VOL side when there is
no host on the P-VOL side to help. Typically executed in PSUS state to facilitate
"fast failback" without requiring a full copy. In
Command", on page
(before command execution), and the right side shows T1, after the command
has executed. For both -swaps and -swapp, the delta data from the original S-
VOL becomes dominant and is copied to the original P-VOL, the S/P-VOL
designations are swapped.
-swapp (TrueCopy only): Executes the equivalent of a -swaps from the original
P-VOL side. Unlike -swaps, -swapp does require the cooperation of hosts at both
sides.
Returned Normal termination: 0. When resynchronizing groups, 0 = normal termination
Values for all pairs.
Abnormal termination: Returns a common error code and a unique error code
for this command. For details on error codes, see
NOTE: During TrueCopy and TCE pair operations, there are cases where
pair operations fail when high volume host I/O or frequent change of pair
status is occurring on both local and remote array. If pair operation fails
and state transition is not done, then retry the pair operation (pairvolchk
command can be used to check the state transition). If pair operation fails
partially when doing pair operation by groups, then pair operation needs to
be done per each pair logical volume within that group.
Hitachi AMS 2000 Family Command Control Interface (CCI) Reference Guide
Value
Figure 1-16, "Example of -FHORC Option for
1-24, the left side shows T0 for both the P-VOL and S-VOL
Performing CCI Operations
Figure 1-18, "Pairresync
Chapter 2, Troubleshooting.
1–23