# Stratis Cheatsheet for RHEL 10

This cheatsheet covers common Stratis commands for storage management on Red Hat Enterprise Linux 10, based on official documentation and recent guides (e.g., RHEL 9/10 RHCSA resources from 2025). Stratis simplifies local storage with pools, thin provisioning, snapshots, and encryption. It builds on LVM and XFS.

**Prerequisites**: Ensure block devices are available and not in use. Stratis requires stratisd service running.

## Installation
- Install packages: `sudo dnf install stratisd stratis-cli`
- Enable and start service: `sudo systemctl enable --now stratisd`
- Verify: `sudo systemctl status stratisd`

## Pool Management
- Create a pool: `sudo stratis pool create <pool_name> /dev/<blockdev> [/dev/<another>]`
  - Example: `sudo stratis pool create mypool /dev/sdb`
- List pools: `sudo stratis pool list`
- Destroy pool: `sudo stratis pool destroy <pool_name>` (unmount filesystems first)
- Add data device: `sudo stratis pool add-data <pool_name> /dev/<blockdev>`
- Initialize cache: `sudo stratis pool init-cache <pool_name> /dev/<cachedev>`
- Add cache device: `sudo stratis pool add-cache <pool_name> /dev/<cachedev>`

## Filesystem Management
- Create filesystem: `sudo stratis filesystem create <pool_name> <fs_name>`
  - Example: `sudo stratis filesystem create mypool myfs`
- List filesystems: `sudo stratis filesystem list [<pool_name>]`
- Destroy filesystem: `sudo stratis filesystem destroy <pool_name> <fs_name>`
- Mount: Filesystems are at `/stratis/<pool_name>/<fs_name>`. Use `sudo mount /stratis/<pool_name>/<fs_name> /mnt/point`
- Unmount: `sudo umount /mnt/point`

## Snapshot Management
- Create snapshot: `sudo stratis filesystem snapshot <pool_name> <source_fs> <snapshot_name>`
  - Example: `sudo stratis filesystem snapshot mypool myfs mysnapshot`
- List snapshots: Included in `stratis filesystem list`
- Revert to snapshot: Destroy current FS and rename snapshot, or use as needed (snapshots are writable)
- Destroy snapshot: `sudo stratis filesystem destroy <pool_name> <snapshot_name>`

## Encryption
Stratis supports encrypted pools (available in RHEL 9+ and confirmed for 10).
- Create encrypted pool: `sudo stratis key set --keyfile-path <keyfile> <key_desc>`
- Then: `sudo stratis pool create --key-desc <key_desc> <pool_name> /dev/<blockdev>`
- Unlock pool: `sudo stratis pool unlock <key_desc>`
- List keys: `sudo stratis key list`
- For TPM: Use `--capture-key` or specific options for binding.

## Monitoring and Status
- List block devices: `sudo stratis blockdev list [<pool_name>]`
- Daemon rediscover: `sudo stratis daemon rediscover`
- Version: `sudo stratis daemon version`
- Check service: `sudo systemctl status stratisd`
- Debug: `sudo journalctl -u stratisd`

## Advanced Features
- Thin provisioning: Enabled by default; overprovision with care (pools can grow dynamically).
- Expand pool: Add devices with `add-data` or `add-cache`.
- Rename pool: Not directly supported; export/import or recreate.
- Integration with VDO: Can be used underlying, but Stratis manages on top.

## Tips and Best Practices
- Always back up data before destructive operations.
- Monitor pool usage: Use `stratis pool list` for free space.
- For RHEL 10 specifics: Commands are consistent with RHEL 9; check `man stratis` for updates.
- Resources: Red Hat Documentation (Chapter on Stratis in Managing File Systems), stratis-storage.github.io.
- Common error: If pool not found, run `stratis daemon rediscover`.

## Troubleshooting
- Service issues: `journalctl -u stratisd`
- Rediscover devices: `sudo stratis daemon rediscover`
- Encryption unlock: `sudo stratis pool unlock`

For more details, refer to `man stratis` or Red Hat's official docs (https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/managing_file_systems/setting-up-stratis-file-systems_managing-file-systems)."