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truenas-migration: mdadm boot mirror, clean zfs export step

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Use TrueNAS boot-pool SSDs as mdadm RAID1 for NixOS root to keep
the boot path ZFS-independent. Added zfs export step before shutdown.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Torjus Håkestad
2026-02-20 01:28:02 +01:00
parent 09ce018fb2
commit c9f47acb01
1 changed files with 5 additions and 3 deletions
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8
docs/plans/truenas-migration.md
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@@ -92,8 +92,10 @@ Expand storage capacity for the main hdd-pool. Since we need to add disks anyway
- Configure monitoring (node-exporter, promtail, smartctl-exporter) - Configure monitoring (node-exporter, promtail, smartctl-exporter)
3. **Install NixOS**: 3. **Install NixOS**:
- Install NixOS on boot drive (SSD/NVMe, separate from ZFS pool) - `zfs export hdd-pool` on TrueNAS before shutdown (clean export)
- Import existing ZFS pool - Wipe TrueNAS boot-pool SSDs, set up as mdadm RAID1 for NixOS root
- Install NixOS on mdadm mirror (keeps boot path ZFS-independent)
- Import hdd-pool via `boot.zfs.extraPools`
- Verify all datasets mount correctly - Verify all datasets mount correctly
4. **Service migration**: 4. **Service migration**:
@@ -148,7 +150,7 @@ will function fine with uneven distribution, just slightly suboptimal for perfor
- [ ] Hostname for new NAS host? (nas1? storage1?) - [ ] Hostname for new NAS host? (nas1? storage1?)
- [ ] IP address allocation (keep 10.69.12.50 or new IP?) - [ ] IP address allocation (keep 10.69.12.50 or new IP?)
- [ ] Boot drive: which SSD/NVMe for NixOS root? - [x] Boot drive: Reuse TrueNAS boot-pool SSDs as mdadm RAID1 for NixOS root (no ZFS on boot path)
- [ ] Retire old 8TB drives? (SMART looks healthy, keep unless chassis space is needed) - [ ] Retire old 8TB drives? (SMART looks healthy, keep unless chassis space is needed)
- [ ] Drive trays: do new 24TB drives fit, or order trays from abroad? - [ ] Drive trays: do new 24TB drives fit, or order trays from abroad?
- [ ] Timeline/maintenance window for NixOS swap? - [ ] Timeline/maintenance window for NixOS swap?