When running Linux COBMR with Cohesity Block-Based backups, there’s an extra file required to be generated when the COBMR config (cobmrcfg) runs on the source machine (system being backed up).
To setup the pre-script, see: CoBMR Cohesity Pre-script
The full pre-script command used when backing up with Cohesity block based protection jobs is:
cobmrcfg --cobmr_boot_backup
The extra file is called: ‘boot.tar.xz’ and saved in /COBMRCFG. This file should also be backed up (it is by default under the ‘COBMRCFG’ folder).