check_e2fs_next_fsck

#!/bin/bash
# $Id: check_e2fs_next_fsck,v 1.16 2014/02/05 08:00:30 oernii Exp $
# Author: Ernest Beinrohr, AXON PRO, 2010, Ernest.Beinrohr@axonpro.sk
# Licence: GPL 3
#  Patches: Giles.Westwood@semantico.com
# test

PATH=$PATH:/sbin
DEVS=`egrep "ext2|ext3|ext4" /etc/mtab|cut -f 1 -d " " | tr '\n' ' '`
WARNINGS=""
ERRORS=""
HOST=`hostname`
WARN_DAYS=7
MAX_INODE_COUNT=50000 # devices with less than this inodes are not checked

for DEV in $DEVS
do
    FSTYPE=$(grep $DEV /etc/mtab | gawk '{print $3}')
    if [ x$FSTYPE == "xext4" -a -f /sbin/dumpe4fs ]; then
        DUMPEFS="dumpe4fs"
    else
        DUMPEFS="dumpe2fs"
    fi
    COUNT=`$DUMPEFS -h $DEV 2>&1| grep '^Mount count'|cut -f2 -d:`
    INTERVAL=`$DUMPEFS -h $DEV 2>&1| grep '^Check interval'|cut -f2 -d:|cut -f 1 -d\(`
    MAX_COUNT=`$DUMPEFS -h $DEV 2>&1| grep '^Maximum mount count'|cut -f2 -d:`
    NEXT_STRING=`$DUMPEFS -h $DEV 2>&1| grep '^Next check after'|cut -f2- -d:`
    INODE_COUNT=`$DUMPEFS -h $DEV 2>&1| grep '^Inode count'|cut -f2 -d:`
    NEXT=`date --utc --date "$NEXT_STRING" +%s`
    NOW=`date --utc +%s`

    # control count, control time
    let COUNT2=COUNT+1
    let NEXT2=NEXT-`echo $WARN_DAYS*24*3600|bc`

    # interval check
    if [[ $INTERVAL -eq 0 ]]
    then
	WARNINGS="$WARNINGS $DEV check interval is not defined (consider running: /opt/bin/set_e2fs_defaults); "
    fi
    
    # max count check
    if [[ $MAX_COUNT -lt 0 ]]
    then
	WARNINGS="$WARNINGS $DEV max mount count is not defined (consider running: /opt/bin/set_e2fs_defaults); "
    fi
    
    # count check
    if [[ $COUNT -ge $MAX_COUNT && $MAX_COUNT -ne -1 && $INODE_COUNT -ge $MAX_INODE_COUNT ]]
    then
        ERRORS="$ERRORS $DEV mountCount=$MAX_COUNT, next restart causes FSCK !!; "
    fi
    if [[ $COUNT2 -ge $MAX_COUNT && $MAX_COUNT -ne -1 ]]
    then
        WARNINGS="$WARNINGS $DEV mountCount is $COUNT of Max:$MAX_COUNT. Run fsck while you can !! ; "
    fi

    # time check
    if [[ $NOW -ge $NEXT && $NEXT_STRING != "" && $INODE_COUNT -ge $MAX_INODE_COUNT ]]
    then
        ERRORS="$ERRORS $DEV next fsck check time is in the past ($NEXT_STRING), next restart causes FSCK !! ;  "
    fi
    if [[ $NOW -ge $NEXT2 && $NEXT_STRING != "" ]]
    then
        WARNINGS="$WARNINGS $DEV next fsck check is in $NEXT_STRING. Run fsck while you can !! ;  "
    fi
done

if [[ $ERRORS != "" ]]
then
    echo "ERROR: $HOST: $ERRORS"
    echo ""
    echo "$ERRORS" | sed -e 's/;/\n/g'
    exit 2
elif [[ $WARNINGS != "" ]]
then
    echo "WARNING: $HOST: $WARNINGS"
    echo ""
    echo "$WARNINGS" | sed -e 's/;/\n/g'
    exit 1
else
    echo "OK, filesystems $DEVS are fsck safe"
fi