Returning Copy Exported Volumes To The Library - IBM TS7700 Series User Manual

August 15, 2017

Returning Copy Exported Volumes to the Library

There are two reasons for returning physical volumes that have been exported using the copy export
operation to their source library. 1) They no longer contain any data and are to be re-used or 2) the primary
copy of a logical volume is not accessible and the copy exported volume contains the only valid copy.
Normally, after the copy exported volumes are reclaimed; they are returned to the source TS7700 and re-
used. You can identify which physical volumes can be brought back using any of the methods described in
the section on Checking the Status of Copy Exported Physical Volumes. Once the volumes to return have
been identified, you add them back to the library through the I/O station. These volumes should only be
returned after the next copy export is executed and the volumes are taken off-site.
If the primary copy of a logical volume cannot be accessed because of a problem with the physical volume
it was on and, in a Grid configuration, there is no other valid copy of the volume, the copy exported physical
volume that contains the secondary logical volume copy must be brought back. You have several options
available to identify the physical volume to return (easiest is first). 1) Use the host console request function
to obtain the logical volume information. For example, say you need access to logical volume Z09866 in
library PROD001 and need to bring back the copy exported physical volume it is on. Here is the information
returned to the Library Request,PROD001,lvol,Z09866 console command:
LOGICAL VOLUME INFORMATION V1
LOGICAL VOLUME:
MEDIA TYPE:
COMPRESSED SIZE (MB):
MAXIMUM VOLUME CAPACITY (MB): 800
CURRENT OWNER:
MOUNTED LIBRARY:
MOUNTED VNODE:
MOUNTED DEVICE:
TVC LIBRARY:
MOUNT STATE:
CACHE PREFERENCE:
CATEGORY:
LAST MOUNTED (UTC):
LAST MODIFIED (UTC):
LAST MODIFIED VNODE:
LAST MODIFIED DEVICE:
TOTAL REQUIRED COPIES:
KNOWN CONSISTENT COPIES:
IMMEDIATE-DEFERRED:
DELETE EXPIRED:
RECONCILIATION REQUIRED:
----------------------------------------------------------------------
LIBRARY RQ CACHE PRI PVOL
PROD001 N
The physical volume to be returned is shown in the 'Sec PVOL' field, which in this example is A04500.
The other methods are to refer to the status file records when the logical volume was last exported or use of
© Copyright IBM Corporation, 2017
Z09866
ECST
792
PROD001
PROD001
PG1
1111
2007-07-02 02:06:20
2007-07-02 01:40:47
00
30
1
1
N
N
N
SEC PVOL
N S70421 A04500
COPY ST COPY Q
CMPT -
COPY CP
DEF
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