cryptsetup-refresh - Linux
Overview
cryptsetup-refresh is a command-line tool for resuming previously suspended encrypted volumes in Linux. It is commonly used by administrators to mount encrypted partitions or devices without the need to re-enter the passphrase or encryption key.
Syntax
cryptsetup-refresh [OPTIONS] <device>
Options/Flags
- -d, –device
: Specify the device or partition to be resumed (e.g., /dev/sda3). - -i, –iter-time : Set the iteration time in milliseconds for the key derivation function (default: 2000).
- -p, –parallel-jobs
: Set the maximum number of parallel jobs to use for key derivation (default: 1). - -y, –yes: Automatically agree to resume the device without prompting for confirmation.
- -v, –verbose: Increase the verbosity of the output.
Examples
Resuming a Suspended Encrypted Volume
cryptsetup-refresh /dev/sda3
Resuming a Suspended Volume with Increased Iteration Time
cryptsetup-refresh --iter-time 5000 /dev/sda3
Resuming a Suspended Volume Silently
cryptsetup-refresh -y /dev/sda3
Common Issues
- Failure to Resume: Ensure that the passphrase or key used to encrypt the volume is correct and try again. If the passphrase is incorrect, the volume cannot be resumed.
- Incorrect Device Name: Verify that the device name specified is correct and refers to the encrypted partition or device to be resumed.
Integration
cryptsetup-refresh can be integrated into scripts or used with other commands to automate volume management tasks. For instance:
echo "resume_volume" | cryptsetup luksResume /dev/sda3
Related Commands
- cryptsetup: Primary utility for manipulating encrypted devices and volumes in Linux.
- luks: Device-mapper encryption driver used by cryptsetup for full-disk encryption.