Initial commit: Hermes Agent Skills collection

2026-07-12 19:02:59 +00:00
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+# Live Discovery Patterns for Storage Migrations
+
+## Discovery commands for storage migration planning
+
+When planning to move disks between systems (ZFS → Ceph, decommission, etc.), always run these live first:
+
+### Ceph OSD Discovery
+```bash
+# Full OSD info
+ceph osd tree
+ceph osd df
+
+# Single OSD metadata (shows device path, size, rotational, hostname)
+ceph osd metadata osd.N --conf /etc/pve/ceph.conf --keyring /etc/pve/priv/ceph.client.admin.keyring
+
+# Device path tells you if disk is USB-backed:
+# USB: "/dev/disk/by-path/pci-*usb-*"
+# Native SATA: "/dev/disk/by-path/pci-*ata-*"
+# NVMe: "/dev/disk/by-path/pci-*nvme-*"
+
+# Pool-to-Crush-Rule mapping
+ceph osd pool ls detail | grep -E "pool_name|crush_rule"
+```
+
+### ZFS Discovery
+```bash
+zpool status          # Which disks are members?
+zpool list            # Capacity info
+zfs list              # Datasets and usage
+```
+
+### Smart Health
+```bash
+smartctl -a /dev/sdX | grep -E "Model|Serial|Rotation|Reallocated|Power_On|Temp"
+```
+
+## Ceph Pool Details (from session 2026-07-03)
+
+| Pool | Rule | Size | Applied To |
+|------|------|------|------------|
+| cephfs_data | replicated_rule (host) | 3 | CephFS |
+| cephfs_metadata | replicated_ssd (host) | 3 | CephFS meta |
+| vm_disks | replicated_ssd (host) | 3 | VM disks |
+| rbd | replicated_hdd (host) | 3 | RBD |
+| hdd_disk | replicated_hdd (host) | 3 | General storage |
+| tm_disks | replicated_hdd (host) | 2 | TimeMachine |
+
+CRUSH rules: `replicated_rule` = default (host), `replicated_ssd` = SSD-only, `replicated_hdd` = HDD-only.
+
+## Ceph Version
+Squid 19.2.4 (stable), on Proxmox VE cluster "pve" with nodes proxmox3-7 + n5pro.