DLM_CONTROLD(8)

💖 DLM_CONTROLD 💖 (that's section 8 of the dlm manual, bestie)

okay so real talk — this page is about the dlm cluster control daemon and it's genuinely iconic, let's get into it 🫶

---

✨ NAME ✨

dlm_controld — the dlm cluster control daemon 💅

---

🦋 SYNOPSIS 🦋

dlm_controld [OPTIONS]

---

🌸 DESCRIPTION 🌸

so the kernel dlm cannot do this part by itself, okay? it literally needs a user daemon to manage lockspace membership, and that daemon is dlm_controld. no cap.

here's the vibe: dlm_controld manages lockspace membership using corosync cpg groups, and then it translates membership changes into dlm kernel recovery events. it's giving translator, it's giving middle-manager, it's giving essential.

dlm_controld also manages posix locks for cluster file systems that use the dlm. so yeah, it does both. main character energy fr fr 👑

---

🎀 OPTIONS 🎀

heads up bestie: command line options override a corresponding setting in dlm.conf(5). and if you wanna see the default settings? run dlm_controld -h. periodt.

• --daemon_debug | -D — enable debugging to stderr, and don't fork. it stays right there with you, clingy (affectionate).
• --foreground — don't fork. that's it. that's the whole thing. simple, clean, slay.
• --log_debug | -K — enable kernel dlm debugging messages 🔥
• *--protocol | -r *str — dlm kernel lowcomms protocol. your choices are tcp, sctp, or detect. pick your fighter 💀
• --debug_logfile | -L — write debugging to log file 📝
• *--enable_plock | -p *0|1 — enable/disable posix lock support for cluster fs
• --plock_debug | -P — enable plock debugging
• *--plock_rate_limit | -l *int — limit rate of plock operations (0 for none, i.e. no limit, go feral)
• *--plock_ownership | -o *0|1 — enable/disable plock ownership
• *--drop_resources_time | -t *int — plock ownership drop resources time (milliseconds) ⏱️
• *--drop_resources_count | -c *int — plock ownership drop resources count
• *--drop_resources_age | -a *int — plock ownership drop resources age (milliseconds)
• *--post_join_delay | -j *int — seconds to delay fencing after cluster join 🕐
• *--enable_fencing | -f *0|1 — enable/disable fencing
• --enable_concurrent_fencing 0|1 — enable/disable concurrent fencing
• *--enable_startup_fencing | -s *0|1 — enable/disable startup fencing
• *--enable_quorum_fencing | -q *0|1 — enable/disable quorum requirement for fencing
• --enable_quorum_lockspace 0|1 — enable/disable quorum requirement for lockspace operations
• --enable_helper 0|1 — enable/disable helper process for running commands
• --repeat_failed_fencing 0|1 — enable/disable retrying after fencing fails (it said try again, and it meant it 🙈)
• --fence_all str — fence all nodes with this agent
• --unfence_all — enable unfencing self with fence_all agent
• --help | -h — print this help, then exit 🫡
• --version | -V — print program version information, then exit

---

🌈 SEE ALSO 🌈

dlm_tool(8), dlm.conf(5)

go read those too, iykyk 💜

---

okay that's the whole page, you ate that 🍓 this was dlm, version dated 2012-04-05, straight from section 8 of the manual — mwah, bye bestie! 🧚✨