DSM-G600, DNS-3xx and NSA-220 Hack Forum

cdk · 2008-10-19 17:53:23

Hello,

somewhere here I read that the flash devices /dev/mtdblock0 and /dev/mtdblock1 should always be unmounted to prevent corruption. /dev/mtdblock1 is and manually umounting /dev/mtdblock0 is no problem either, but after restarting the CH3SNAS (1.04RC6) it's always mounted again.

Recently I had some trouble because I swapped my harddisks and it needed a couple of long telnet sessions to fix it, but now I'm afraid this mtdblock0 thing is a result of my noob-style intervention.

Or should I just forget about that because everything seemes to work fine...?

Thanks, cdk

Last edited by cdk (2008-10-19 17:55:58)

bq041 · 2008-10-19 18:09:06

I cannot say for sure on the CH3NAS, but on the DNS, it can cause major problems. Check the file /etc/rc.sh. It is the file that calls for the mounting and unmounting of the flash. On the DNS F/W 1.04, /dev/mtdblock0 is unmounted on line 81.

cdk · 2008-10-19 19:07:33

In /etc/rc.sh the device is first mounted, followed by a huge list of cp jobs and after that it's finally unmounted. So I think it's remounted later again by another process. Which one could this be?

This is the last section of /etc/rc.sh, after the umount command (line 109):

Code:

umount /sys/mtd1
#Wilson12282005+

rm -rf /default
mkdir /default
cp -f /sys/crfs/default/* /default/
mv /tmp/hd_magic_num /default/


#Insert Scsi Disk Driver Module
insmod /usr/lib/modules/sd_mod.ko
#Wilson04282006


rm -f /default/server.pem
rm -f /default/cakey.pem
rm -f /default/cacert.pem
rm -f /default/Certs.info
rm -f /default/server-key-nopassword.pem

cp -f /sys/crfs/default/server.pem /web/
cp -f /sys/crfs/default/cakey.pem /web/
cp -f /sys/crfs/default/cacert.pem /web/
cp -f /sys/crfs/default/Certs.info /web/
cp -f /sys/crfs/default/server-key-nopassword.pem /web/

adjtimex -t 9960

rtc -s
echo "<fan script start>"
/sbin/fan.script &


echo "** set loopback interface"
/sbin/ifconfig lo 127.0.0.1 netmask 255.0.0.0



#
# Enslave Ethernet interface eth0
#
mac_read


echo 0 > /proc/sys/net/ipv4/ip_forward

if [ ! -e /tmp/wrongdate ]; then
        echo "** execute rc.init.sh"
        #mount
        chg_hostname  #fish20060817+
        /etc/rc.d/rc.init.sh

        #for printer sever (jack)
        chmod 777 /dev/null
        chown 501:501 /dev/null

        judge_swap      #+Wilson04282005
        mbr
        write_raidtab
        hd_verify

        write_raidtab           #eve020107
        chk_mtdaapd_path        #eve010506

        atd
        smbcom
        smbd -D
        nmbd -D
        ex_goweb &
        SetTimeZone
        stime
        crond

        chkbutton #jack20061020+

        /bin/cat /sys/crfs/default/version.txt

        route add -net 224.0.0.0 netmask 255.0.0.0 dev egiga0
        /usr/sbin/mfg_search
        /bin/upnpscript

        #+Wilson12282005
        echo "** Get MAC Addr"
        MACStrStart=39
        MACStrOffset=17
        LANMACStr=$(ifconfig egiga0 | grep HWaddr)
        lanmac=`expr substr "$LANMACStr" "$MACStrStart" "$MACStrOffset"`
        echo "$lanmac" > /etc/macaddr
        #Wilson12282005+


        chk_sysfile     &       #+eve010407:check system file
        chk_openssl &
        sharedname_sort &
        touch /var/spool/at/.SEQ
        /web/webs &
        cp /proc/scsi/scsi /etc         #+Wilson04282006, backup scsi file for hotswap

        /usr/sbin/chk_fun_plug &
        /usr/sbin/chk_upnpav_path &
        fancontrol &

        #Added by Ben, Start inotify to watch iTune Share Folder
        /etc/iTunescript &

        #Eve05122006++
        mount -t usbfs none /proc/bus/usb

        #+eve01032007:Insert LLTD Module
        insmod /usr/lib/modules/lltd.ko

        #fish20070116 +
        ex_opserver
        #fish20070116 end

        #eve050307:BT
        ./sys/crfs/sbin/linkscript &

        #+Vincent01252008
        SyncMms &
        getMsg &
        #Vincent01252008+

        #touch /var/spool/at/.SEQ

        #/web/webs &

        touch /tmp/boot_finished
else
        echo "<reboot now>"
        reboot
fi

I now searched these scripts for the word "mount", but without success:
- /sbin/fan.script
- /etc/rc.d/rc.init.sh
- /bin/upnpscript
- /etc/iTunescript
- /sys/crfs/sbin/linkscript

Did I miss something? What comes after /etc/rc.sh?

DSM-G600, DNS-3xx and NSA-220 Hack Forum

Announcement

#1 2008-10-19 17:53:23

/dev/mtdblock0 always mounted - is this a problem?

#2 2008-10-19 18:09:06

Re: /dev/mtdblock0 always mounted - is this a problem?

#3 2008-10-19 19:07:33

Re: /dev/mtdblock0 always mounted - is this a problem?

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