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

A Troubleshooting EVFS
This appendix contains information about troubleshooting the HP-UX Encrypted Volume and File
System (EVFS) product. This chapter addresses the following topics:
• “Troubleshooting tools overview” (page 149)
• “Displaying EVFS volume information” (page 149)
• “Verifying the EMD (evfsvol check)” (page 152)
• “Verifying user keys (evfspkey lookup)” (page 152)
• “Problem scenarios” (page 153)
• “Reporting problems” (page 157)
Troubleshooting tools overview
EVFS provides troubleshooting tools to perform the following tasks:
• Display EVFS volume information
• Verify the encryption metadata (EMD)
• Verify user key pairs
The tasks and commands used to perform them are listed in Table 5and are described in the
sections that follow.
Table 5 EVFS troubleshooting tasks and commands
CommandTask
evfsadm stat -aShow all I/O and cryptography
statistics for each EVFS volume.
evfsadm stat -sShow the total number of data
blocks, read, written, decrypted,
and encrypted by EVFS.
evfsadm stat -zReset EVFS statistic values to
zero.
evfsvol display -a|evfs_volume_pathDisplay key IDs, underlying
volume, and operating
parameters for EVFS volumes.
evfsvol check -a|evfs_volume_pathVerify the integrity of the EMD
area of a volume.
evfspkey lookup [-u user|-r] [-k keyname]Verify and display information
about user key pairs.
Displaying EVFS volume information
You can display the following information about EVFS volumes:
• I/O and encryption statistics, using the evfsadm stat command.
• Keys configured for an EVFS volume, using the evfsvol display command. This command
also displays operating parameters for the EVFS volume, including the underlying LVM, VxVM,
or physical volume device file name and the volume encryption algorithm.
Displaying I/O and encryption statistics (evfsadm stat)
The evfsadm stat command queries the EVFS kernel modules and displays I/O and encryption
statistics. This command is similar to the iostat command.
Troubleshooting tools overview 149