bootlogd(8) [debian man page]
BOOTLOGD(8) Linux System Administrator's Manual BOOTLOGD(8) NAME
bootlogd - record boot messages SYNOPSIS
/sbin/bootlogd [-c] [-d] [-r] [-s] [-v] [ -l logfile ] [ -p pidfile ] DESCRIPTION
Bootlogd runs in the background and copies all strings sent to the /dev/console device to a logfile. If the logfile is not accessible, the messages will be kept in memory until it is. OPTIONS
-d Do not fork and run in the background. -c Attempt to write to the logfile even if it does not yet exist. Without this option, bootlogd will wait for the logfile to appear before attempting to write to it. This behavior prevents bootlogd from creating logfiles under mount points. -r If there is an existing logfile called logfile rename it to logfile~ unless logfile~ already exists. -s Ensure that the data is written to the file after each line by calling fdatasync(3). This will slow down a fsck(8) process running in parallel. -v Show version. -l logfile Log to this logfile. The default is /var/log/boot. -p pidfile Put process-id in this file. The default is no pidfile. BUGS
Bootlogd works by redirecting the console output from the console device. (Consequently bootlogd requires PTY support in the kernel con- figuration.) It copies that output to the real console device and to a log file. There is no standard way of ascertaining the real con- sole device if you have a new-style /dev/console device (major 5, minor 1) so bootlogd parses the kernel command line looking for con- sole=... lines and deduces the real console device from that. If that syntax is ever changed by the kernel, or a console type is used that bootlogd does not know about then bootlogd will not work. AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl SEE ALSO
dmesg(8),fdatasync(3). Jul 21, 2003 BOOTLOGD(8)
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cachefslog(1M) cachefslog(1M) NAME
cachefslog - Cache File System logging SYNOPSIS
logfile| cachefs_mount_point DESCRIPTION
The command is used to enable or disable logging for a cachefs_mount_point. When the command is used without any options, it displays the logfile. The logfile contains information on the operation performed on a cachefs_mount_point and statistics used by to get the working set size of cache directory. The specified logfile will contain information for all the CacheFS mount points using the same cache direc- tory. A logfile and a cache directory have a 1-to-1 mapping; that is, even if a cache directory is removed and recreated with the same name, the logfile used in the previous instance of the cache directory cannot be reused with the new cache directory. Enabling logging may have performance impact, even if minimal, on the operations for all the CacheFS mount points using the same cache directory. The command is mainly used for debugging purposes. Options The following options are supported. You must be a superuser to use the and options. Specify the logfile to be used. Halt logging. Operands cachefs_mount_point A mount point of a cache file system. RETURN VALUE
returns the following values: Success. non-zero An error occurred. EXAMPLES
1. Checking the logging of a directory. This example checks if the CacheFS file system is being logged: 2. Changing the logfile. This example changes the logfile of to 3. Verifying the change of a logfile. This example verifies the change of the previous example: 4. Halting the logging of a directory. This example halts logging for the directory: AUTHOR
was developed by Sun Microsystems, Inc. SEE ALSO
cachefsstat(1M), cachefswssize(1M), cfsadmin(1M). cachefslog(1M)