All posts - Page 35

Operating systems, infrastructure, emulation, and technical history.

FreeBSDFix July 11, 2026 5 min read

Fixing pf State Table Exhaustion on FreeBSD

How to confirm PF state exhaustion, identify the responsible rules and sources, size memory safely, apply limits, and validate a ruleset reload.

#fix#pf#firewall

FreeBSDFix July 11, 2026 7 min read

How to measure FreeBSD boot delays with boottrace, inspect rcorder dependencies, isolate blocking services, and repair ordering safely.

#rc.d#boot#performance

FreeBSDFix July 11, 2026 5 min read

How to distinguish healthy ZFS ARC caching from real FreeBSD memory pressure, measure reclamation, and set a tested ARC ceiling safely.

#fix#zfs#memory

FreeBSDFix July 11, 2026 6 min read

How to preserve and classify a FreeBSD ZFS assertion panic, protect the pool, test hardware, recover data, and report a reproducible bug.

#zfs#panic#kernel

FreeBSDDeep Dive July 11, 2026 7 min read

How HAST replication modes, role changes, fencing, and CTL iSCSI targets fit together without confusing replication with failover.

#hast#storage#iscsi

FreeBSDHow-To July 11, 2026 5 min read

How to enable FreeBSD BSM auditing, select useful event classes, protect trail storage, rotate safely, filter records, and verify capture.

#audit#security#logging

FreeBSDHow-To July 11, 2026 4 min read

How to inspect ZFS boot-environment coverage, create and verify a bectl rollback point, activate it safely, and reclaim space afterward.

#howto#zfs#boot-environments

FreeBSDHow-To July 11, 2026 5 min read

How to adapt a FreeBSD program for Capsicum by pre-opening resources, limiting descriptor rights, entering capability mode, and testing denial.

#howto#capsicum#security

FreeBSDHow-To July 11, 2026 6 min read

How to configure modern FreeBSD CARP on two hosts, control election and preemption, test failover, synchronize PF state, and monitor HA.

#carp#high-availability#networking

FreeBSDHow-To July 11, 2026 6 min read

A production-safe FreeBSD DTrace workflow for loading providers, narrowing probes, aggregating syscalls and stacks, and controlling tracing overhead.

#dtrace#debugging#performance