Shadow Server Messages

Shadow server operations can display the following status messages on the system console (OPA0) and on terminals enabled to receive operator messages.

Shadow server messages are always informational messages and include the prefix %SHADOW_SERVER-I-SSRVmessage-abbreviation. The following example includes the OPCOM banner and the shadow server message to illustrate what the messages look like when they are output to the console:

%%%%%%%%%%%   OPCOM 24-MAR-1990 15:01:30.99   %%%%%%%%%%%
 (from node SYSTMX at 24-MAR-1990 15:01:31.36)
Message from user SYSTEM on SYSTMX
%SHADOW_SERVER-I-SSRVINICOMP, shadow server has completed initialization.

The following messages are returned by the shadow server in response to shadow set operations. Several of the messages refer to a copy thread number; this is a unique identifier denoting a copy or merge operation. The messages in this section are listed in alphabetical order by message abbreviation. For simplicity, the messages shown here do not include the SHADOW_SERVER-I- prefix.

SSRVCMPFCPY, completing copy operation on device _virtual-unit: at LBN: LBN-location, ID number: copy-thread-number

Explanation: The copy operation has completed.

User Action: None.

SSRVCMPMRG, completing merge operation on device _virtual-unit: at LBN: LBN-location, ID number: copy-thread-number

Explanation: The merge operation has completed.

User Action: None.

SSRVCOMPLYFAIL, still out of compliance for per-disk license units, new shadow members may be immediately removed

Explanation: The number of shadow set members on the node has exceeded the number of VOLSHAD-DISK license units for more than 60 minutes. Attempts to bring the node into compliance by removing unlicensed members from their shadow sets have failed. If any new members are mounted, they might be removed immediately.

User Action: Ensure that the number of VOLSHAD-DISK license units on each node is equal to the number of shadow set members mounted on that node. If necessary, dismount shadow set members until the number of mounted members equals the number of VOLSHAD-DISK license units loaded on the node. If you require more VOLSHAD-DISK license PAKs, contact a Digital support representative.

SSRVINICOMP, shadow server has completed initialization

Explanation: The shadow server has been initialized at boot time.

User Action: None.

SSRVINICPY, initiating copy operation on device _virtual-unit: at LBN: LBN-location, I/O Size: number-of-blocks blocks, ID number: copy-thread-number

Explanation: A copy operation is beginning on the shadow set whose virtual unit number is listed in the message.

User Action: None.

SSRVINIMRG, initiating merge operation on device _virtual-unit: at LBN logical-block-number, I/O Size: number-of-blocks blocks, ID number: copy-thread-number

Explanation: A merge operation is beginning on the shadow set. The merge can occur after a copy operation has completed.

User Action: None. )

SSRVINIMMRG, initiating minimerge operation on device _virtual-unit: at LBN LBN-location, I/O size: number-of-blocks blocks, ID number: copy-thread-number

Explanation: A shadowing minimerge is beginning on the device indicated. The message identifies the minimerge with the name of the shadow set virtual unit, and the LBN location of the minimerge, the size of the I/O request (in blocks), and the ID number of the copy thread. For example:

%SHADOW_SERVER-I-SSRVINIMMRG, initiating minimerge  operation on device _DSA2: at LBN 0, I/O size: 105 blocks, ID number: 33555161 

User Action: None.

SSRVINSUFPDL, insufficient per-disk license units loaded,shadow set member(s) are removed in number minutes

Explanation: The number of shadow set members mounted exceeds the number of VOLSHAD-DISK license units loaded on the node. If this condition is not corrected before the number of minutes displayed in this message has elapsed, Volume Shadowing removes unlicensed members from shadow sets in an attempt to make the node compliant with the number of loaded VOLSHAD-DISK license units.

User Action: Dismount shadow set members until the number of mounted members is equal to the number of VOLSHAD-DISK license units on the node.

SSRVNORMAL, successful completion of operationon device _virtual-unit: at LBN LBN-location, ID number: copy-thread-number

Explanation: The copy or merge operation has completed.

User Action: None.

SSRVRESCPY, resuming copy operation on device _virtual-unit: at LBN: logical-block-number I/O size: number-of-blocks blocks, ID number: copy-thread-number

Explanation: A copy operation is resuming. The message identifies the copy with a unique sequence number, the name of the shadow set virtual unit, the LBN location of the copy, and the size of the I/O request (in blocks). For example:

%SHADOW_SERVER-I-SSRVRESFCPY, resuming Full-Copy copy sequence number 
16777837 on device _DSA101:, at LBN 208314  I/O size: 71 blocks

User Action: None.

SSRVSPNDCPY, suspending operation on device _virtual-unit: at LBN: logical-block-number, ID number: copy-thread-number

Explanation: A copy operation is being interrupted before it completes. (If a crash occurs during a copy operation, a minimerge assist can interrupt the copy operation to resolve inconsistencies. The shadowing software can resume the copy operation when the minimerge completes.) The following message identifies the copy operation with the name of the shadow set virtual unit, the LBN location of the copy, and a unique ID number.

%SHADOW_SERVER-I-SSRVSPNDCPY, suspending operation on device _DSA101:. at LBN: 208314, ID    number: 16777837 

User Action: None.

SSRVSPNDMMRG, suspending minimerge operation on device _virtual-unit: at LBN: logical-block-number ID number: copy-thread-number

Explanation: A minimerge is interrupted before it completes. The message identifies the minimerge with the name of the shadow set virtual unit, the LBN location of the minimerge, and a unique ID number. For example:

%SHADOW_SERVER-I-SSRVSPNDMMRG, suspending minimerge operation on device _DSA101:. at LBN:   3907911, ID number: 16777837 

User Action: None.

SSRVSPNDMRG, suspending merge operation on device _virtual-unit: at LBN: LBN-location, ID number: copy-thread-number

Explanation: A merge operation has been suspended while the shadow set undergoes a copy operation.

User Action: None.

SSRVTRMSTS, reason for termination of operation on device: _virtual-unit:, abort status

Explanation: This message always accompanies the SSRVTERM message to provide further information about the copy termination.

User Action: Possible actions vary depending on the reason for the error. You might need to check and repair hardware or restart the copy operation.

SSRVTERMCPY, terminating operation on device: _virtual-unit:, ID number:copy-thread-number

Explanation: The copy thread is aborting. See the accompanying SSRVTRMSTS message for more information.

User Action: None.

SSRVTERMMRG, terminating operation on device: _virtual-unit:, ID number:copy-thread-number

Explanation: The merge thread is aborting. See the accompanying SSRVTRMSTS message for more information.

User Action: None.

SSRVTERMMMRG, terminating operation on device: _virtual-unit:, ID number: copy-thread-number

Explanation: The minimerge thread is aborting. See the accompanying SSRVTRMSTS message for more information.

User Action: None.