QUORU...KSTART(3)

💖 quorum_trackstart — from the Corosync Cluster Engine Programmer's Manual (section 3) 💖

okay bestie, so this is the page for quorum_trackstart(3) and it's genuinely not that deep, but it IS important so let's go ✨

---

🌸 NAME 🌸

quorum_trackstart — Enable callbacks notification.

like, it turns the notifications ON. that's the whole vibe. 👑

---

✨ SYNOPSIS ✨

#include <corosync/quorum.h>

int quorum_trackstart(quorum_handle_t *handle, unsigned int flags);

---

🦋 DESCRIPTION 🦋

okay so the quorum_trackstart function is the one you call when you wanna enable callbacks notification from the quorum API. that's it. that's the function. 🎀

and here's the tea: every single time the voting configuration changes — like when a node joins the cluster or leaves the cluster (the manpage says "leave", we're not gonna fight it) — OR when the quorum status changes, the notification gets queued. queued! not delivered instantly. sit with that. 🙈

then, that queued notification gets dispatched via the quorum_dispatch() function, and that is what actually executes the callback. so like, quorum_trackstart is the "hey can I get notifications pls" and quorum_dispatch is the "okay here's your notification bestie". teamwork. 💅

now, the flags argument — you define it with one or more of these values, and the values can be bitwise-or'd together. iconic behavior fr fr:

#define CS_TRACK_CURRENT      0x01
#define CS_TRACK_CHANGES      0x02
#define CS_TRACK_CHANGES_ONLY 0x04

---

🌈 RETURN VALUE 🌈

this call returns the CS_OK value if it went well, and otherwise, an error comes back at you. no in-between. 😭

---

💀 ERRORS 💀

here's the full roster of ways it can go wrong, no skips:

• CS_ERR_TRY_AGAIN — Resource temporarily unavailable
• CS_ERR_INVALID_PARAM — Invalid argument
• CS_ERR_ACCESS — Permission denied
• CS_ERR_LIBRARY — The connection failed
• CS_ERR_INTERRUPT — System call interrupted by a signal
• CS_ERR_NOT_SUPPORTED — The requested protocol/functionality not supported
• CS_ERR_MESSAGE_ERROR — Incorrect auth message received
• CS_ERR_NO_MEMORY — Not enough memory to complete the requested task

bestie if you're getting one of these, it's giving "read the error, it literally tells you what's wrong" 💖

---

👑 SEE ALSO 👑

go read these too, they're all in the same friendship group 🫶

• quorum_overview(3)
• quorum_initialize(3)
• quorum_model_initialize(3)
• quorum_finalize(3)
• quorum_getquorate(3)
• quorum_trackstop(3)
• quorum_fd_get(3)
• quorum_dispatch(3)
• quorum_context_set(3)
• quorum_context_get(3)

---

and that's the whole page, no cap. this lil gem came from the corosync Man Page, dated 2026-09-04. mwah, go write some cluster code, you're doing amazing sweetie 💅✨🌸💖