Cisco Catalyst 9500 Manual page 278

Monitoring and Troubleshooting the Feature
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Step 3
debug archive versioning
Use this command to enable debugging of the Cisco IOS configuration archive activities to help monitor and
troubleshoot configuration replace and rollback.
Example:
Device# debug archive versioning
Jan 9 06:46:28.419:backup_running_config
Jan 9 06:46:28.419:Current = 7
Jan 9 06:46:28.443:Writing backup file flash:myconfiguration-7
Jan 9 06:46:29.547: backup worked
Step 4
debug archive config timestamp
Use this command to enable debugging of the processing time for each integral step of a configuration replace
operation and the size of the configuration files being handled.
Example:
Device# debug archive config timestamp
Device# configure replace flash:myconfiguration force
Timing Debug Statistics for IOS Config Replace operation:
Time to read file usbflash0:sample_2.cfg = 0 msec (0 sec)
Number of lines read:55
Size of file
Starting Pass 1
Time to read file system:running-config = 0 msec (0 sec)
Number of lines read:93
Size of file
Time taken for positive rollback pass = 320 msec (0 sec)
Time taken for negative rollback pass = 0 msec (0 sec)
Time taken for negative incremental diffs pass = 59 msec (0 sec)
Time taken by PI to apply changes = 0 msec (0 sec)
Time taken for Pass 1 = 380 msec (0 sec)
Starting Pass 2
Time to read file system:running-config = 0 msec (0 sec)
Number of lines read:55
Size of file
Time taken for positive rollback pass = 0 msec (0 sec)
Time taken for negative rollback pass = 0 msec (0 sec)
Time taken for Pass 2 = 0 msec (0 sec)
Total number of passes:1
Rollback Done
Step 5 exit
Use this command to exit to user EXEC mode.
Example:
System Management Configuration Guide, Cisco IOS XE Amsterdam 17.2.x (Catalyst 9500 Switches)
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Configuration Replace and Configuration Rollback