OVERVIEW
fs-check checks filesystem sizes to see if they are getting too full. It uses a configuration file that specifies the filesystems to check, email contacts, trigger thresholds (percentage or amount used/unused), and a report program to run. It includes fs-report, which shows things like the largest files, the newest files, and core files. It can be run from cron or as a daemon.
More detail...
Lines in the configuration that fs-check reads file might look like this:
# This is who gets mail when something's wrong and no further specification default owner sysadmin@breakaway.com 90%
# This is the program to run when no other program is specified... default action /usr/local/bin/fs-report
# Let filesystems get to 90% full before complaining default limit 90%
# But let i-nodes go to 98% ...
default ilimit 98%
limit /oracle 70%
owner /oracle dba@breakaway.com
action /oracle /var/adm/bin/run_special_oracle_report_program
exclude_pat ^/cdrom
More detail on fs-check and fs-report can be found in the manual pages.
INSTALLATION
** 0. Copy tarfile ***
Download. If you are reading this chances are you've done that.
** 1. Untar ***
Once you have this, untar the distribution gzipped tar file. If you have GNU tar you run something like this:
tar -zxvpf fs-check-version.tar.gz
What's this with that the "z" on tar? GNU tar will uncompress while untar'ing. If you don't have GNU tar but have GNU zip:
gzcat fs-check-version.tar.gz | tar -xvpf -
*** 2. Configure, make and test ****
Now run:
./configure
If that you don't get any error messages, great! You can see what you can "configure" by giving the --help option, i.e.
./configure --help
Next try making the documentation:
make
If you get an error about "pod2man not found", it is not a big loss if you don't care about documentation.
Something I like to do, but I guess it's optional is running the regression tests:
make check.
Finally install. Depending on the permissions you have on filesystems and this has been configured to get installed (to change the default locationsee --prefix on configure), you might have to be root.
make install
If you want to do all in one line:
./configure && make && make check && make install
Or to live dangerously:
./configure && su -c make install
*** 2. Add Crontab line ****
Even though fs-check runs as a daemon, it is often run from cron.
You might add a like this to your crontab:
#
# File system checker....
#
5 * * * * /usr/local/bin/fs-check.pl -1 --config /var/adm/fs-check.cnf
TEST
*** 3. Review configuration ***
The defaults should be looked over - some servers may have specially full disks or disks that others should be notified about
Test the program like this:
fs-check -n -v -1 --config fs-check.cnf