70 lines
3.8 KiB
Markdown
70 lines
3.8 KiB
Markdown
# Stratis Cheatsheet for RHEL 10
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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.
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**Prerequisites**: Ensure block devices are available and not in use. Stratis requires stratisd service running.
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## Installation
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- Install packages: `sudo dnf install stratisd stratis-cli`
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- Enable and start service: `sudo systemctl enable --now stratisd`
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- Verify: `sudo systemctl status stratisd`
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## Pool Management
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- Create a pool: `sudo stratis pool create <pool_name> /dev/<blockdev> [/dev/<another>]`
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- Example: `sudo stratis pool create mypool /dev/sdb`
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- List pools: `sudo stratis pool list`
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- Destroy pool: `sudo stratis pool destroy <pool_name>` (unmount filesystems first)
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- Add data device: `sudo stratis pool add-data <pool_name> /dev/<blockdev>`
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- Initialize cache: `sudo stratis pool init-cache <pool_name> /dev/<cachedev>`
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- Add cache device: `sudo stratis pool add-cache <pool_name> /dev/<cachedev>`
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## Filesystem Management
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- Create filesystem: `sudo stratis filesystem create <pool_name> <fs_name>`
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- Example: `sudo stratis filesystem create mypool myfs`
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- List filesystems: `sudo stratis filesystem list [<pool_name>]`
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- Destroy filesystem: `sudo stratis filesystem destroy <pool_name> <fs_name>`
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- Mount: Filesystems are at `/stratis/<pool_name>/<fs_name>`. Use `sudo mount /stratis/<pool_name>/<fs_name> /mnt/point`
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- Unmount: `sudo umount /mnt/point`
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## Snapshot Management
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- Create snapshot: `sudo stratis filesystem snapshot <pool_name> <source_fs> <snapshot_name>`
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- Example: `sudo stratis filesystem snapshot mypool myfs mysnapshot`
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- List snapshots: Included in `stratis filesystem list`
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- Revert to snapshot: Destroy current FS and rename snapshot, or use as needed (snapshots are writable)
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- Destroy snapshot: `sudo stratis filesystem destroy <pool_name> <snapshot_name>`
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## Encryption
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Stratis supports encrypted pools (available in RHEL 9+ and confirmed for 10).
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- Create encrypted pool: `sudo stratis key set --keyfile-path <keyfile> <key_desc>`
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- Then: `sudo stratis pool create --key-desc <key_desc> <pool_name> /dev/<blockdev>`
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- Unlock pool: `sudo stratis pool unlock <key_desc>`
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- List keys: `sudo stratis key list`
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- For TPM: Use `--capture-key` or specific options for binding.
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## Monitoring and Status
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- List block devices: `sudo stratis blockdev list [<pool_name>]`
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- Daemon rediscover: `sudo stratis daemon rediscover`
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- Version: `sudo stratis daemon version`
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- Check service: `sudo systemctl status stratisd`
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- Debug: `sudo journalctl -u stratisd`
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## Advanced Features
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- Thin provisioning: Enabled by default; overprovision with care (pools can grow dynamically).
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- Expand pool: Add devices with `add-data` or `add-cache`.
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- Rename pool: Not directly supported; export/import or recreate.
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- Integration with VDO: Can be used underlying, but Stratis manages on top.
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## Tips and Best Practices
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- Always back up data before destructive operations.
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- Monitor pool usage: Use `stratis pool list` for free space.
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- For RHEL 10 specifics: Commands are consistent with RHEL 9; check `man stratis` for updates.
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- Resources: Red Hat Documentation (Chapter on Stratis in Managing File Systems), stratis-storage.github.io.
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- Common error: If pool not found, run `stratis daemon rediscover`.
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## Troubleshooting
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- Service issues: `journalctl -u stratisd`
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- Rediscover devices: `sudo stratis daemon rediscover`
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- Encryption unlock: `sudo stratis pool unlock`
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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)."
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