Da pochi giorni sono un possessore di un NAS QNAP e mi sono imbattuto il un classico problema: gli HDDs non vanno in standby.
Sui forum QNAP si parla di uno script bash da lanciare via ssh, che ahimè, non è più scaricabile.
Per fortuna, girando nelle pieghe del web (aka google cache), sono riuscito a farlo riemergere dal black hole.
Ed eccolo qui in tutta la sua “splentitudine”:
#!/bin/sh
#================================================================
# Copyright (C) 2008 QNAP Systems, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#----------------------------------------------------------------
#
# blkdevMonitor_v2.sh
#
# Abstract:
# A program of testing purpose on monitor block device
#
# HISTORY:
# 2013/05/15 - Created - Kent
#
#================================================================
/sbin/daemon_mgr klogd.sh stop "/etc/init.d/klogd.sh start"
/usr/bin/killall dd 2>/dev/null 1>/dev/null
MD_DEVIVES="md9 md13 md0 md1 md2"
SD_DEVIVES="sda sdb sdc sdd sde sdf sdg sdh"
Do_Log=0
MAXRUN=100
FORCE_STANDBY=0
BLKDEV_LOG=/root/blkdevMonitor_v2.log
analyse_kmsg()
{
_klog=/.klog
/bin/touch $_klog
_standby=1
# read /proc/kmsg
while [ 1 ]; do
/bin/dd if=/proc/kmsg of=$_klog bs=1 count=10240 2>/dev/null 1>/dev/null
for i in $MD_DEVIVES; do
/bin/cat $_klog | /bin/grep $i | /bin/grep "dirtied inode"
if [ $? = 0 ]; then
/bin/cat $_klog | /bin/grep $i | /bin/grep "dirtied inode" >> $BLKDEV_LOG
_standby=0
fi
/bin/cat $_klog | /bin/grep $i | /bin/grep "block"
if [ $? = 0 ]; then
/bin/cat $_klog | /bin/grep $i | /bin/grep "block" >> $BLKDEV_LOG
_standby=0
fi
done
for i in $SD_DEVIVES; do
/bin/cat $_klog | /bin/grep $i | /bin/grep "dirtied inode"
if [ $? = 0 ]; then
/bin/cat $_klog | /bin/grep $i | /bin/grep "dirtied inode" >> $BLKDEV_LOG
_standby=0
fi
/bin/cat $_klog | /bin/grep $i | /bin/grep "block"
if [ $? = 0 ]; then
/bin/cat $_klog | /bin/grep $i | /bin/grep "block" >> $BLKDEV_LOG
_standby=0
fi
done
if [ $_standby = 0 ]; then
return 1
fi
done
}
_countdown()
{
/bin/sync;/bin/sync
/bin/echo -n "Countdown: "
cntdown=$1
while [ ${cntdown} -gt 0 ]; do
/bin/sleep 1
/bin/echo -n "${cntdown} "
cntdown=$[$cntdown-1]
done
echo
}
_check_standby()
{
for i in $SD_DEVIVES; do
/sbin/hdparm -C /dev/${i} 2>>/dev/null | /bin/grep active
if [ $? -eq 0 ]; then
echo /dev/${i}
echo "Some process was waked up HDD..."
return 1 # HDD is active
fi
done
return 0
}
/bin/echo "===== Welcome to use blkdevMonitor_v2 on `/bin/date` ====="
case "$1" in
-h)
/bin/echo "Usage:"
/bin/echo " $0 [N]"
/bin/echo " N means that monitor block devices N times and generate N log files.(Default N = 100)"
exit 0
;;
esac
/bin/echo "Turn off/on VM block_dump & Clean dmesg"
/bin/echo 0 > /proc/sys/vm/block_dump
/bin/dmesg -c 2>/dev/null 1>/dev/null
/bin/dmesg -c 2>/dev/null 1>/dev/null
/bin/dmesg -c 2>/dev/null 1>/dev/null
_cnt=20
while [ ${_cnt} -gt 0 ]; do
/bin/sync
/bin/dmesg -c 2>/dev/null 1>/dev/null
_cnt=$[$_cnt-1]
done
/bin/echo 1 > /proc/sys/vm/block_dump
/bin/date > /dev/null
_countdown 3
# ignore 10240 bytes
/bin/dd if=/proc/kmsg of=/dev/null bs=1 count=10240 2>/dev/null 1>/dev/null
/bin/echo "Start..."
[ "x$1" != "x" ] && MAXRUN=$1
_cnt=0
# remove log
/bin/rm -f $BLKDEV_LOG
while [ ${_cnt} -lt ${MAXRUN} ]; do
echo "============= $_cnt/$MAXRUN test, `/bin/date` ==============="
echo "============= $_cnt/$MAXRUN test, `/bin/date` ===============" >> $BLKDEV_LOG
if [ $FORCE_STANDBY = 1 ]; then
_check_standby
if [ $? != 0 ]; then
for i in $SD_DEVIVES; do
# force standby
/sbin/hdparm -y /dev/${i} 2>/dev/null 1>/dev/null
if [ $? = 0 ]; then
echo "Issuing standby command in /dev/${i}"
else
echo "/dev/${i} not found"
fi
done
fi
/bin/sleep 20
fi
analyse_kmsg
_cnt=$[$_cnt+1]
echo
echo >> $BLKDEV_LOG
done
/bin/echo "Turn off block_dump"
/bin/echo 0 > /proc/sys/vm/block_dump
Utilizzandolo, ho capito che il mio problema era nell’app di videosorveglianza (che comunque non stavo usando)