STRUCT CEPH_SUBVOL_METRIC_SNAPSHOT(9)

💖 NAME 💖

okay bestie, welcome to the struct ceph_subvol_metric_snapshot(9) page from the Kernel API Manual — it’s literally a point-in-time snapshot of subvolume metrics, and it’s giving “little struct, big main character energy.” 🫶✨

🦋 SYNOPSIS 🦋

       struct ceph_subvol_metric_snapshot {
           u64 subvolume_id;
           u64 read_ops;
           u64 write_ops;
           u64 read_bytes;
           u64 write_bytes;
           u64 read_latency_us;
           u64 write_latency_us;
        };

🎀 Members 🎀

• subvolume_id — the subvolume identifier, aka the inode number of the subvolume root. iykyk 💅
• read_ops — number of read operations since the last snapshot. not me keeping count, but she is 🔥
• write_ops — number of write operations since the last snapshot. write it down, bestie ✍️
• read_bytes — total bytes read since the last snapshot. bytes bytes bytes 🍓
• write_bytes — total bytes written since the last snapshot. data goes brrr 💀
• read_latency_us — sum of read latencies in microseconds, for avg calculation. math girl summer 😭
• write_latency_us — sum of write latencies in microseconds, for avg calculation. latency said “notice me” ✨

🌈 SEE ALSO 🌈

• Kernel file ./fs/ceph/subvolume_metrics.h struct ceph_subvolume_metrics_tracker(9) — go read this next, bestie, it’s the linked lore 👑🦋

xoxo, this page is brought to you by ./fs/ceph, dated October 2026 — periodt, mwah 💋🎀