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Diffstat (limited to 'linhes/linhes-system/checkXFSfrag.sh')
| -rwxr-xr-x | linhes/linhes-system/checkXFSfrag.sh | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/linhes/linhes-system/checkXFSfrag.sh b/linhes/linhes-system/checkXFSfrag.sh new file mode 100755 index 0000000..f3c71da --- /dev/null +++ b/linhes/linhes-system/checkXFSfrag.sh @@ -0,0 +1,70 @@ +#!/bin/bash +# +# Bash script by Gene Alexander (http://www.eracc.com/contact) +# of ERA Computers & Consulting (www.eracc.com, blog.eracc.com, shopping.eracc.com) +# Written using vim, the BEST plain text file editor in all of Creation. +# +# Teach yourself bash scripting: http://tldp.org/LDP/abs/html/index.html +# +# Purpose: To check fragmentation on XFS with xfs_db and run xfs_fsr on XFS mount points that +# are above a specific fragmentation threshold. +# +# What is xfs_db? Use 'man xfs_db' to find out. +# What is xfs_fsr? Use 'man xfs_fsr' to find out. +# +# Any busy files, such as open logs on /var/log, will be skipped. To defragment logs one should +# wrap this script with another script to stop and restart logging. Or, even better, write +# one's own script just for defragmentation of the logs. +# +# Warranty: NONE. Use at your own discretion and be aware that data loss is on your head if +# you choose to use this script. +# +# License: GPL 2.0 http://www.gnu.org/licenses/gpl-2.0.html +# +# Suggested Usage: crontab file for root +# 0 0 * * * /root/bin/chkxfsfrag # Run at midnight +# +# Original Release: 2011 December 15 (Merry Christmas!) +# DO NOT ALTER HEADER FROM THIS LINE UP. +# +e='/usr/bin/echo -e' # Use the echo command, not built-in. +xfsfsr=/usr/bin/xfs_fsr # Set variable with the path to xfs_fsr. +xfsdb=/usr/bin/xfs_db # Set variable with the path to xfs_db. +ionice=/usr/bin/ionice # Set variable with the path to ionice. +idle='/usr/bin/idle.py -s' # Set variable with path to idle.py. +pctmax=12 # Set maxiumum frag percent needed for defrag. + # This is zero here for testing purposes only + # a higher number should be used in production. +array=`df -T|grep xfs|cut -f 1 --delim=" "` # Array of all XFS file systems. +for i in ${array[@]}; +do + #check for idle flag + if [[ $1 == "--idle" ]] + then + while ! $idle + do + echo "System is busy. Waiting 10 minutes before trying again." + sleep 600 + done + fi + #check that the device is SATA and skip defrag on SSDs + device=`echo ${i} | cut -f 3 --delim="/" | sed 's/[0-9]//g'` + isSATA=`cat /sys/block/${device}/queue/rotational` + if [[ $isSATA -eq 1 ]] + then + percentage=`$xfsdb -c frag -r ${i}|grep factor|cut -f 7 --delim=" "` + percent2=`$e $percentage|cut -f 1 --delim=.` + if [[ "$percent2" -gt "$pctmax" ]] + then + $e "${i} is $percentage fragmented. Running defragment on ${i}." + # Only uncomment one of the following two lines. + #$xfsfsr -v ${i} # Uncomment for verbose defrag. + $ionice -c3 $xfsfsr ${i} # Uncomment for quiet defrag. + else + $e "${i} is $percent2% fragmented and is below the fragmentation threshold of $pctmax%. Skipping." + fi + else + echo "${i} is an SSD. Skipping." + fi +done +exit 0 |