Encrypted Volume and File System v2.2 Administrator Guide (777846-001, April 2014)

7 Administering EVS
This chapter describes how to perform the following EVFS administrative tasks:
• Starting and stopping EVFS components. This includes the tasks described in the following
sections:
◦ “Enabling encryption and decryption access to EVS volumes” (page 64)
◦ “Disabling encryption and decryption access to EVS volumes” (page 64)
◦ “Stopping the EVFS subsystem” (page 65)
◦ “Opening raw access to EVS volumes” (page 65)
◦ “Closing raw access to EVS volumes” (page 66)
• Managing EVFS keys and users. This includes the tasks described in the following sections:
“Displaying key IDs for an EVS volume” (page 66)◦
◦ “Restoring user keys” (page 67)
◦ “Changing owner keys for an EVS volume” (page 68)
◦ “Recovering from problems with owner keys” (page 69)
◦ “Removing keys from an EVS volume” (page 69)
◦ “Removing user keys or stored passphrase from the EVFS key database” (page 69)
◦ “Changing the passphrase for a key” (page 70)
◦ “Creating or changing a stored passphrase for an existing key” (page 70)
• Recovering from encryption metadata (EMD) corruption. This task is described in the section
“Recovering from EMD corruption” (page 71).
• Removing a volume from the EVFS subsystem. This task is described in “Removing a volume
from the EVFS subsystem” (page 72).
• Exporting and importing EVS volumes. This includes the tasks described in the following
sections:
◦ “Exporting an EVS volume” (page 73)
◦ “Importing an EVS volume” (page 75)
• “Resizing EVS volumes and file systems” (page 76)
Starting and stopping EVFS
This section describes the following procedures for enabling and disabling EVFS components:
• Starting the EVFS Subsystem (see “Step 5: Starting the EVFS subsystem” (page 33))
• “Enabling encryption and decryption access to EVS volumes” (page 64)
• “Disabling encryption and decryption access to EVS volumes” (page 64)
• “Stopping the EVFS subsystem” (page 65)
• “Opening raw access to EVS volumes” (page 65)
• “Closing raw access to EVS volumes” (page 66)
Starting and stopping EVFS 63