04-28-2013
Quote:
Originally Posted by
alister
The way this is typically done during logrotation is to rename the logfile, then send a signal to the logging process to inform it that it needs to close its file descriptor and create a new logfile, and finally, compress.
Another safe alternative, though more brutish, is to shut down the logging process during rotation.
Yes this is what I thought. The problem is that the logging process is basically a black box as far as I'm concerned. I don't know if it holds a file descriptor, or just keeps atomically opening-appending-closing the file, nor do I know if it would respond to signals. It's also not possible to shut down the logging process, for various reasons but mainly because the traffic is real-time and needs to be logged as such.
Looks like there's no way to do what I need without the logging process explicitly cooperating. I guess the next best approach would be to strip only data out of the capture which definitely appears in the gz after the archiving is complete. And that's something I have no clue how to do yet... stay tuned for another thread
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LEARN ABOUT XFREE86
cachefslog
cachefslog(1M) System Administration Commands cachefslog(1M)
NAME
cachefslog - Cache File System logging
SYNOPSIS
cachefslog [-f logfile | -h] cachefs_mount_point
DESCRIPTION
The cachefslog command displays where CacheFS statistics are being logged. Optionally, it sets where CacheFS statistics are being logged,
or it halts logging for a cache specified by cachefs_mount_point. The cachefs_mount_point argument is a mount point of a cache file system.
All file systems cached under the same cache as cachefs_mount_point will be logged.
OPTIONS
The following options are supported. You must be super-user to use the -f and -h options.
-f logfile Specify the log file to be used.
-h Halt logging.
OPERANDS
cachefs_mount_point A mount point of a cache file system.
USAGE
See largefile(5) for the description of the behavior of cachefslog when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).
EXAMPLES
Example 1: Checking the Logging of a directory.
The example below checks if the directory /home/sam is being logged:
example% cachefslog /home/sam
not logged: /home/sam
Example 2: Changing the logfile.
The example below changes the logfile of /home/sam to /var/tmp/samlog:
example# cachefslog -f /var/tmp/samlog /home/sam
/var/tmp/samlog: /home/sam
Example 3: Verifying the change of a logfile.
The example below verifies the change of the previous example:
example% cachefslog /home/sam
/var/tmp/samlog: /home/sam
Example 4: Halting the logging of a directory.
The example below halts logging for the /home/sam directory:
example# cachefslog -h /home/sam
not logged: /home/sam
EXIT STATUS
The following exit values are returned:
0 success
non-zero an error has occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
cachefsstat(1M), cachefswssize(1M), cfsadmin(1M), attributes(5), largefile(5)
DIAGNOSTICS
Invalid path It is illegal to specify a path within a cache file system.
SunOS 5.10 7 Feb 1997 cachefslog(1M)