Veritas Volume Manager 5.0 Troubleshooting Guide Guide (September 2006)

44 Logging commands and transactions
Logging transactions
Logging transactions
The vxtranslog command allows you to log VxVM transactions to a file. The following
table demonstrates the usage of
vxtranslog:
Transactions are logged to the file, translog, in the directory /etc/vx/log. This
path name is a symbolic link to a directory whose location depends on the operating
system. If required, you can redefine the directory which is linked. If you want to preserve
the settings of the
vxtranslog utility, you must also copy the settings file, .translog,
to the new directory.
Note: The .translog file is a binary and should not be edited.
The size of the transaction log is checked after an entry has been written so the actual size
may be slightly larger than that specified. When the log reaches a maximum size, the
current transaction log file, translog, is renamed as the next available historic log file,
translog.number, where number is an integer from 1 up to the maximum number of
historic log files that is currently defined, and a new current log file is created.
A limited number of historic log files is preserved to avoid filling up the file system. If the
maximum number of historic log files has been reached, the oldest historic log file is
removed, and the current log file is renamed as that file.
Each log file contains a header that records the host name, host ID, and the date and time
that the log was created.
The following are sample entries from a transaction log file:
Table 4-2 Examples of vxtranslog usage
Command Description
vxtranslog -l List current settings for transaction logging.
vxtranslog -m on Turn on transaction logging.
vxtranslog -s 512k Set the maximum transaction log file size to
512K.
vxtranslog -n 10 Set the maximum number of historic transaction
log files to 10.
vxtranslog -n no_limit Remove any limit on the number of historic
transaction log files.
vxtranslog -q on Turn on query logging.
vxtranslog -q off Turn off query logging.
vxtranslog -m off Turn off transaction logging.