暂停过程之前磁盘已满
问题描述:
某些进程(如git gc --aggressive
)需要长时间运行,占用大量的磁盘空间,如果用完了磁盘空间死亡。因此,如果磁盘即将用完,我想暂停它们,所以我有时间释放一些内存。我怎样才能做到这一点?暂停过程之前磁盘已满
答
这是我想出的一个初始解决方案。经过测试与Mac OS X.建议欢迎!
#!/bin/bash
FILESYSTEM="/dev/disk1"
DF=/usr/local/opt/coreutils/libexec/gnubin/df
OSASCRIPT=/usr/bin/osascript
if ! [[ -x $DF ]]; then echo "Error: $DF isn't executable."; exit 1; fi
PID=$1
STOPAT=$2
# Verify input
if [[ -n ${PID//[0-9]/} ]]; then echo "Error: The first parameter should be an integer"; exit 1; fi
if [[ -n ${STOPAT//[0-9]/} ]]; then echo "Error: The second parameter should be an integer"; exit 1; fi
RED='\033[0;31m'; PURPLE='\033[0;35m'; BLUE='\033[0;36m'
NC='\033[0m' # No Color
echo -e "Will pause the following process when there are ${PURPLE}$STOPAT${NC} bytes left on ${PURPLE}$FILESYSTEM${NC}"
PROCESS=`ps -p $PID | grep $PID`
echo -e "${BLUE}$PROCESS${NC}"
# Check every second to see if FILESYSTEM has more than STOPAT bytes left.
while true; do
left=`$DF | grep -m 1 $FILESYSTEM | tr -s ' ' | cut -d" " -f4`
echo -ne "$left bytes left\r";
if [[ $left -lt $STOPAT ]]; then
MSG="pausing process...$PID";
echo $MSG;
if [[ -x $OSASCRIPT ]]; then
$OSASCRIPT -e "display notification \"$MSG\""
fi
kill -TSTP $PID
break
fi
sleep 1s
done
你需要改变DF
,以配合您df
。 (我没有直接调用df
,因为我的系统,化名为df -h
上。)