NAME¶

lsoflog - log the open file list with timestamp

SYNOPSIS¶

lsoflog [ logfile [ pathlist [ timeout ]]]

DESCRIPTION¶

lsoflog logs the open file list with timestamp. Basically the script puts the output of "date +%F %T" in front of each line for the output of "lsof -n -P -X -w -S42 +fg +x +D...".

Default pathlist is "+D/opt +D/srv". A proper pathlist keeps the logfile reasonably small. Non-existing directories cause lsoflog to fail. lsof consumes a noticeable amount of CPU cycles. It should only be activated when needed. Default timeout is 42 seconds.

EXAMPLES¶

To run lsoflog every 10 minutes, the crontab entry could look like this:

-02-57/10 * * * * root /usr/sbin/lsoflog /var/log/lsof.log "+D/db2/data"

To rotate and compress the log from time to time, the logrotate entry could look like this:

/var/log/lsof.log {
compress
dateext
maxage 365
rotate 99
size +20M
notifempty
missingok
copytruncate
}

To find all IO to /ora/data that was not done with O_DIRECT just do:

awk '$11~/\/ora\/data/ && $8 !~/DIR/ {print $1,$2,$3,$8,$11}' /var/log/lsof.log | sort -u

To see which processes have done ASYNC IO to /ora/data just do:

awk '$11~/\/ora\/data/ && $8 ~/AIO/ {print $1,$2,$3,$8,$11}' /var/log/lsof.log | sort -u

EXIT STATUS¶

0 Successful program execution.
>0 Usage, syntax or execution errors.

FILES¶

/usr/sbin/lsoflog

the script itself.

/var/log/lsof.log

the default logfile.

/etc/cron.d/ClusterTools2

the cron entry.

/etc/logrotate.d/ClusterTools2

the logrotate entry.

BUGS¶

Non-existing directories cause lsoflog to fail.
Feedback is welcome, please mail to feedback@suse.com

SEE ALSO¶

lsof(1), crontab(5), logrotate(8), open(2), fcntl(2), ClusterTools2(7)

COPYRIGHT¶

(c) 2011-2019 L.Pinne, Germany.
lsoflog comes with ABSOLUTELY NO WARRANTY.
For details see the GNU General Public License at http://www.gnu.org/licenses/gpl.html