I had a big problem Monday AM on one of my core SAP VM instances, that also happens to have a SQL DB server on it. Our VCB process finishes up on late Sunday night, if you’re not aware of how VCB works, it basically creates a snapshot of the Virtual Machine, then mounts the now readable VMDK parent to a proxy server where your backup agent resides. Once the backup is complete the snapshot is committed. This wasn’t the case Monday AM — the VM crashed and I was paged. Snapshot didn’t commit, parent VMDK could not be found, had to manually set Parent CID in the delta VMDK file then finally when I got it back online the SQL DB was corrupt :( — luckily I had a full SQL backup from the night before.
This is where VMware KB 1007969 comes into the story…
Posted under ESX 3.5 Tips, ESXi 3.5 Tips, Storage
This post was written by Rick Scherer on April 14, 2009


