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docs: add OCI storage volume expansion guide

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JaniSoto 2026-08-11 11:45:13 -04:00
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docs/infrastructure-base.md
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@ -4,6 +4,7 @@
* **Provider**: Oracle Cloud Infrastructure (OCI) * **Provider**: Oracle Cloud Infrastructure (OCI)
* **Architecture**: Ampere A1 Flex (`aarch64` / ARM64) * **Architecture**: Ampere A1 Flex (`aarch64` / ARM64)
* **Resources**: 4 OCPUs (Neoverse N1), 24 GB System RAM * **Resources**: 4 OCPUs (Neoverse N1), 24 GB System RAM
* **Storage Allocation**: 200 GB Always Free Block Volume (Resized Boot Volume)
* **Memory Strategy**: * **Memory Strategy**:
* Container JVM Heap (`-Xmx12G -Xms12G`): Allocated per instance manifest * Container JVM Heap (`-Xmx12G -Xms12G`): Allocated per instance manifest
* Host OS & Page Cache: Minimum 12 GB reserved for kernel, filesystem page cache, and Docker daemon overhead * Host OS & Page Cache: Minimum 12 GB reserved for kernel, filesystem page cache, and Docker daemon overhead
@ -46,3 +47,33 @@ Ensure host user retains ownership of container data to prevent `PermissionError
sudo chown -R $USER:$USER ./data sudo chown -R $USER:$USER ./data
chmod -R u+rwX ./data chmod -R u+rwX ./data
``` ```
---
## 4. OCI Storage Volume Expansion (Always Free Tier)
Oracle Cloud allows up to 200 GB of Always Free block volume storage per tenancy. To expand the default 47 GB boot volume on Ubuntu instances without reinstalling:
### Phase 1: OCI Console Allocation
1. In OCI Console, navigate to **Compute** $\rightarrow$ **Instances** $\rightarrow$ `[Your Instance]` $\rightarrow$ **Storage** / **Boot Volume**.
2. Select **View boot volume details** $\rightarrow$ **Edit**.
3. Change volume size from `47 GB` up to `200 GB` and save.
### Phase 2: Live Kernel Rescan & Partition Growth (Ubuntu)
Execute on the host terminal to rescan the block device and resize the online `ext4` filesystem:
```bash
# 1. Force kernel rescan of resized OCI paravirtualized disk
sudo dd iflag=direct if=/dev/oracleoci/oraclevda of=/dev/null count=1
echo "1" | sudo tee /sys/class/block/`readlink /dev/oracleoci/oraclevda | cut -d'/' -f 2`/device/rescan
# 2. Grow partition 1 on /dev/sda
sudo apt-get update && sudo apt-get install -y cloud-guest-utils
sudo growpart /dev/sda 1
# 3. Resize ext4 filesystem online
sudo resize2fs /dev/sda1
# 4. Verify capacity (Target: ~190G+ available)
df -h /
```