3.8 KiB
3.8 KiB
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
- Example:
- 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
- Example:
- 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>. Usesudo 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
- Example:
- 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-keyor 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-dataoradd-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 listfor free space. - For RHEL 10 specifics: Commands are consistent with RHEL 9; check
man stratisfor 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)."