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RESTORE-FROM-CLONE Reconstructs an original from a clone unit

Storage system:

ETERNUS DX/AF, Symmetrix/VMAX3

Domain:

DEVICE

Privileges:

TSOS


/RESTORE-FROM-CLONE
reconstructs the original unit of a clone pair from the clone unit.

When the command is executed, the data is copied from the clone unit to the original unit. No other access may take place to either of these units. The original unit can be accessed again after the copy process has been started.

The original units of the clone pairs are specified in the UNIT operand.

When the original units are selected via a pubset (UNIT=*BY-PUBSET), clone units must exist for all units of the pubset.

The clone units can be selected for reconstruction either explicitly (e.g. via the catalog ID of a renamed pubset) or implicitly according to their position in a SYSOUT output (*FROM-SHOW-OUTPUT(...) operand).

SHC-OSD checks the global and task-specific security settings before this command is executed (see "Security settings of SHC-OSD"). The current security settings can be displayed with /SHOW-SHC-PROCESSING (see also "SHOW-SHC-PROCESSING Displays settings of SHC-OSD"). They can be changed in the SHC-OSD parameter file (see "Configuration of SHC-OSD") for the next time SHC-OSD is started or with /MODIFY-SHC-PROCESSING for ongoing operations (see "MODIFY-SHC-PROCESSING Changes settings of SHC-OSD").

For QuickOPC clones on ETERNUS DX/AF

After reconstruction has been completed, the clone pairs are still in the SPLIT status.

The pubset has to be exported for a restore on the pubset. The consistency for pubsets is enabled by the assignment of all original and clone units.

When the REC function is used, the original unit can also be the source unit of a remote copy pair. The target unit can also be the original unit of a clone pair. However, no reconstruction to the original unit is possible on the target unit.

For EC clones on ETERNUS DX/AF

Reconstruction takes place in SHC-OSD in several steps which are combined in the command.

After reconstruction has been completed, the clone pairs are still in the SPLIT status.

When the REC function is used, the original unit can also be the source unit of a remote copy pair. The target unit can also be the original unit of a clone pair. However, no reconstruction to the original unit is possible on the target unit.

For TimeFinder/Clone on Symmetrix/VMAX3

If multiple clone sessions exist for the same original unit and all of these are in the COPIED status, the command is executed for the selected units. If any of the unit’s clone sessions is in the RESTORED status, the command can only be executed for this session’s clone unit. The processing depends on the RESTORED-SESSION operand.

If the original unit also has snap units, the command is rejected.

If the original unit is also the target unit of a remote copy pair, the remote copy status must be IN-HOLD or ERROR, and TARGET-ACCESS must be DIRECT.

When the SRDF function is used, the original unit can also be the source unit of a remote copy pair. The target unit can also be the original unit of a clone pair. In this case the source unit is specified in the UNIT operand, and the clone pair of the target unit is selected using the SELECT=*TARGET-UNIT operand.

After the command has been executed the clone session is in the RESTORED status and cannot be used directly for anything else. Only the commands /STOP-CLONE-SESSION, /RESTART-CLONE-SESSION ... RESTORED-SESSION=*SPLIT-ONLY/*ACCEPT and another/RESTORE-FROM-CLONE ... RESTORED-SESSION=*ACCEPT are possible (see also "Re-creating a clone pair" and "Reconstructing the unit for Symmetrix/VMAX3"). While the clone session is in the RESTORED status, no other clone or snap session can be started with the same original unit.

WAIT=*UNTIL-RESTORED / *NO specifies whether the command waits (synchronous command execution) or not (asynchronous command execution) for reconstruction to be completed.

RESTORE-FROM-CLONE

UNIT = *BY-VOLUME(...) / *BY-PUBSET(...) / *BY-SYMMETRIX(...) / *BY-STORAGE(...) /




<alphanum-name 2..2> / <x-text 4..4>


*BY-VOLUME(...)



|

VOLUME = <vsn 1..6>


*BY-PUBSET(...)



|

PUBSET = <cat-id 1..4>



|

,RENAME-PUBSET = *NO / *SAME / <cat-id 1..4>


*BY-SYMMETRIX(...)



|

SERIAL-NUMBER = <alphanum-name 3..12>



|

,LOGICAL-VOLUME = <x-text 1..4>


*BY-STORAGE(...)



|

SERIAL-NUMBER = <alphanum-name 3..14>



|

,LOGICAL-VOLUME = <x-text 1..4>

,CLONE-UNIT = *FIRST-POSSIBLE / *FROM-SHOW-OUTPUT(...) / *BY-PUBSET(...) /





*BY-SYMMETRIX(...) / *BY-STORAGE(...) /





list-poss(256): <alphanum-name 2..2> / <x-text 4..4>


*FROM-SHOW-OUTPUT(...)



|

POSITION = <integer 1..16> / *LAST


*BY-PUBSET(...)



|

CLONE-PUBSET = <cat-id 1..4>


*BY-SYMMETRIX(...)



|

CLONE-LOGICAL-VOLUME = <x-text 1..4>


*BY-STORAGE(...) 1



|

CLONE-LOGICAL-VOLUME = <x-text 1..4>

,CLONE-TYPE = *UNIQUE / *COPY / *MIRROR

,RESTORED-SESSION = *REJECT / *ACCEPT

,WAIT = *STD / *NO / *UNTIL-RESTORED

,SELECT = *STD / *TARGET-UNIT(...)


*TARGET-UNIT(...)



|

RA-GROUP = *UNIQUE / <integer 1..250>

,FORCE = *NO / *YES


UNIT =

Selects the units by means of a particular VSN (*BY-VOLUME), a particular catalog ID (*BY-PUBSET), by means of the serial number and the internal number of the logical volume in the storage system (*BY-SYMMETRIX/*BY-STORAGE), or directly by means of the logical volume's mnemonic device name.

UNIT = *BY-VOLUME(...)
Selects the units by means of a particular VSN.

VOLUME = <vsn 1..6>
Specifies the volume’s VSN.

UNIT = *BY-PUBSET(...)
Selects units by means of a pubset ID or volume set ID. The pubset is protected against reconfiguration during command processing. The relevant clone pubset is found automatically.

PUBSET = <cat-id 1..4>
Specifies the pubset ID or volume set ID.


CAUTION!
When a pubset is reconstructed from the clone units using UNIT=*BY-PUBSET(...), it may not have been reconfigured or, in particular, not have been reduced in size in the meantime. The clone units selected must contain a consistent pubset.


RENAME-PUBSET =
Specifies the pubset ID or volume set ID of the reconstructed pubset.

RENAME-PUBSET = *NO
The reconstructed pubset is not renamed. The pubset ID of the clone pubset is implicitly taken over.

RENAME-PUBSET = *SAME
The reconstructed pubset is renamed with the pubset ID or volume set ID of the original pubset.

RENAME-PUBSET = <cat-id 1..4>
The reconstructed pubset is renamed with the specified pubset ID or volume set ID.

UNIT = *BY-SYMMETRIX(...)
Only relevant for Symmetrix/VMAX3.
Selects the unit by means of the serial number of the storage system and the internal number of the logical volume in the storage system.

SERIAL-NUMBER = <alphanum-name 3..12>
Specifies the serial number of the storage system (make sure it is unique!).

LOGICAL-VOLUME = <x-text 1..4>
Specifies the internal number of the logical volume in the storage system.

UNIT = *BY-STORAGE(...)
Only relevant for ETERNUS DX/AF.
Selects the unit by means of the serial number and the internal number of the logical volume in the storage system.

SERIAL-NUMBER = <alphanum-name 3..14>
Specifies the serial number of the storage system (make sure it is unique!).

LOGICAL-VOLUME = <x-text 1..4>
Specifies the internal number of the logical volume in the storage system.

UNIT = <alphanum-name 2..2> / <x-text 4..4>
Selects the unit by means of the mnemonic device name of the logical volume.


CLONE-UNIT =

Selects the clone unit. If more than one clone unit exists for a unit, a specific clone unit must be selected.

CLONE-UNIT = *FIRST-POSSIBLE
Selects the first possible clone unit for the command.

CLONE-UNIT = *FROM-SHOW-OUTPUT(...)
Selects the clone unit via its position in the output list of /SHOW-CLONE-SESSION-STATUS.

POSITION = <integer 1..16>
Specifies the position of the clone unit.

POSITION = *LAST
Selects the last clone unit in the output list.

CLONE-UNIT = *BY-PUBSET(...)
Selects the clone unit via the pubset ID of the activated and renamed pubset.

CLONE-PUBSET = <cat-id 1..4>
Specifies the pubset ID.

CLONE-UNIT = *BY-SYMMETRIX(...)
Only relevant for Symmetrix/VMAX3.
Selects the clone unit by means of the internal number of the logical volume in the storage system.

CLONE-LOGICAL-VOLUME = <x-text 1..4>
Specifies the internal number of the logical volume in the storage system.

CLONE-UNIT = list-poss(256): <alphanum-name 2..2> / <x-text 4..4>
Specifies the mnemonic device name of the logical volume.


CLONE-TYPE=

Only relevant for ETERNUS DX/AF.
Specifies the clone type (and thus also the replication function) that is used.

CLONE-TYPE = *UNIQUE
Selects the clone type that is determined clearly by the explicit selection at CLONE-UNIT.

CLONE-TYPE = *COPY
The COPY clone type (and thus the QuickOPC replication function) is selected.

CLONE-TYPE = *MIRROR
The MIRROR clone type (and thus the replication function EC) is selected.


RESTORED-SESSION =

Only relevant for Symmetrix/VMAX3.
Controls how a clone session or a session’s pairs are to be treated in the RESTORED status.

RESTORED-SESSION = *REJECT
For clone pairs in the RESTORED status the command is rejected with the message NDE2003.

RESTORED-SESSION = *ACCEPT
The command is executed for clone pairs in the RESTORED status. The clone pair is initially briefly placed in the SPLIT status, and then ultimately in the RESTORED status.


WAIT =

Specifies whether or not the command waits for reconstruction to be completed.

WAIT = *STD
For ETERNUS DX/AF only WAIT=*UNTIL-RESTORED can be used for a replication with EC. WAIT=*NO is used for Symmetrix/VMAX3.

WAIT = *NO
The command does not wait for reconstruction to be completed.

WAIT = *UNTIL-RESTORED
The command waits for reconstruction to be completed.
WAIT=*UNTIL-RESTORED
facilitates the programming of test procedures for recovery operations because no complex inquiries regarding the progress of reconstruction are required for the clone pairs.


SELECT =

Selects the clone pairs.

SELECT = *STD
Selects the clone pairs which were defined using the UNIT operand.

SELECT = *TARGET-UNIT(...)
Selects the clone pairs which are assigned to the target unit of a remote copy pair. The relevant source unit is specified in the UNIT operand.

RA-GROUP =
Only relevant for Symmetrix/VMAX3.
Selects the target unit using the RA group in the case of concurrent target units.

RA-GROUP = *UNIQUE
Selects the one existing target unit.

RA-GROUP = <integer 1..250>
Specifies the RA group for selecting the target unit.


FORCE =

Only relevant for Symmetrix/VMAX3.
FORCE controls the reconstruction of a clone unit which is also an SRDF source unit in the remote copy status ACTIVE.

FORCE = *NO
Reconstruction is rejected.

FORCE = *YES
Reconstruction is executed.

Command processing

The following messages are output to SYSOUT for each director and distributed via routing code 0, i.e. they are logged in the CONSLOG file only. You will find detailed information on the CONSLOG file (log file) in the “Introduction to System Administration” manual [5].

  • For successful processing NDE1073

  • For unsuccessful processing NDE2007

Examples

/RESTORE-FROM-CLONE UNIT=*BY-PUBSET(PUBSET=TFC),CLONE-UNIT=*FIRST-POSSIBLE
/RESTORE-FROM-CLONE UNIT=*BY-VOLUME(VOLUME=TFC.00)

Command return codes

(SC2)

SC1

Maincode

Meaning


0

CMD0001

Command executed successfully

1

0

NDE2003

Command successfully executed, no processing necessary

2

0

NDE2004

Command successfully executed but not yet completed


1

CMD0202

Syntax error


32

NDE2002

Internal error


64

CMD0087

Function not permitted in the current input mode or with the current task privileges


64

CMD0216

Required privilege not available


64

NDE1000

Device not found or not in the storage system


64

NDE1001

Device not attached


64

NDE1003

Data medium not online or not unique


64

NDE1004

Pubset not found or wrong pubset type


64

NDE1005

Pubset not homogeneous


64

NDE1006

Pubset/volume is allocated


64

NDE1008

Volume cannot be allocated


64

NDE1010

Enginuity version is not supported (too low)


64

NDE1015

Device not defined in BS2000


64

NDE1043

Pubset type not supported


64

NDE1100

Invalid pubset state


64

NDE1102

Not all volumes could be allocated


64

NDE1103

No reconfiguration lock for pubset


64

NDE1105

Inconsistent pubset


64

NDE1108

SELECT=*TARGET-UNIT: UNIT is not a source unit


64

NDE1109

SELECT=*TARGET-UNIT: TARGET-UNIT not found


64

NDE1114

Serial number not found


64

NDE1115

Serial number not unique


64

NDE1116

Storage system’s logical volume not found


64

NDE1143

Error occurred during processing of mirror pair


64

NDE1153

Symmetrix device lock set


64

NDE1154

Disk belongs to a meta-disk


64

NDE1171

Target unit is not unique


64

NDE1172

RA group invalid for the specified unit


64

NDE1531

Different number of devices for units and clone unit


64

NDE1535

Device is a clone unit


64

NDE1540

Incorrect state of unit


64

NDE1541

Incorrect state of clone unit


64

NDE1542

Unit is an SRDF target unit and unit is not in *READY state


64

NDE1548

Clone type cannot be determined clearly


64

NDE1549

No clone unit assigned for clone unit selection


64

NDE1553

Device is not a clone unit


64

NDE1702

Connection to SYMAPI server aborted


64

NDE1800

Device not found or not in the storage system


64

NDE1802

Error communicating with StorMan server


64

NDE1803

Management instance not available


64

NDE1810

Storage system’s operating system version not supported


64

NDE1811

Function not supported for storage system


64

NDE1812

StorMan server switched off by command


64

NDE1814

Storage system’s serial number not found


64

NDE1815

Storage system’s serial number not unique


64

NDE1816

Storage system’s logical volume not found


64

NDE1822

Reconstruction step RESTART-CLONE aborted


64

NDE1823

Reconstruction step ACTIVATE-CLONE aborted


64

NDE1824

Reconstruction step SWAP-CLONE aborted


64

NDE1833

No suitable Storman server found


64

NDE1853

Storage unit locked


64

NDE2009

Command aborted with K2 key


64

NDE2011

Symmetrix license not entered


64

NDE2013

SYMAPI error in command


64

NDE2014

StorMan error in command


64

NDE2017

Command not possible for current status of the replication


64

NDE2018

Error on SYMAPI server during the current editing


130

NDE1082

Memory bottleneck during processing of command


130

NDE2005

Command cannot be executed at the moment