#storage

In-depth engineering analysis: Post-mortem: RAID controller battery failure disabling write-back cache. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Docker devicemapper loop-lvm: legacy production node crashes and migration to overlay2. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Deleted unlinked files holding 200 GB disk space: tracking open fds with lsof. Practical diagnostics, logs and production configuration.

A classic war story: why 400 GB of free disk space could not prevent 'No space left on device' when ext4 inode table hit 100% capacity.