Before I get into another howto about my experiences in MythTV, I have to say I created the following instructions mostly for myself, because everytime I redo my MythTV box, it takes me forever to get the damn LCD working. Now finally I have written it down. If it helps someone else, even better.
The following instructions describe how to successfully setup the imon vfd for use with MythTV on a Fedora Core 5 system running at least a 2.6.16 kernel and above. These instructions are modified where needed from the original site venky.ws. Also these instuctions do not activate the IR receiver that comes included in the imon vfd in the LC10M enclosure, simply just the lcd display.
Stand Alone Driver for imon vfd
Prerequisites:
You must have the kernel source or headers in /usr/src/linux that exactly match your running kernel. The installation instructions below assume you are running a 2.6.16 kernel or above.
Installation:
Download the stand alone driver here
# tar xvzf imon_vfd.tgz # cd imon
Remove the following lines from the imon_vfd.c file:
line 122 owner = THIS_MODULE line 147 owner = THIS_MODULE line 162 mode = DEVFS_MODE
Check for devfs_fs_kernel.h
# ls /usr/src/kernels/`uname -r`-`uname -m`/include/linux/devfs_fs_kernel.h No such file or directory
If you do not have the devfs_fs_kernel.h file, just create a blank file.
# touch /usr/src/kernels/`uname -r`-`uname -m`/include/linux/devfs_fs_kernel.hBefore we run the make command I like to modify the Makefile and remove the `name -r` bit. Replace it with the real name of your kernel.
# make -C /usr/src/linux SUBDIRS=$PWD # modules # make install # depmod -a # modprobe imon_vfd
Now check to make sure the lcd device has been created.
# ls /dev/lcd0 /dev/lcd0
LCDproc 0.4.5 for imon
This is the most recent stable version of LCDproc together with the iMON patch.
Prerequisites:
You must have the kernel source or headers in /usr/src/linux that exactly match your running kernel.
Make sure you have the autoconf and automake packages installed.
Make sure you have ncurses-devel installed.
Install the standalone iMON VFD driver.
Installation:
Download LCDproc from here
# tar xvzf lcdproc-0.4.5-imon.tgz # cd lcdproc-0.4.5-imon # aclocal; autoheader; autoconf; automake -a # ./configure # make # make install (as root) # cp LCDd.conf /etc
Now add an entry for the imon_vfd so it will be loaded at boot time.
# echo "/sbin/modprobe imon_vfd" >> /etc/sysconfig/modules/lirc.modulesFinally add LCDd to the rc.local file so that it is started at boot time.
# echo "/usr/local/sbin/LCDd &" >> /etc/rc.localLastly be sure to enable the option for LCD output in the MythTV options menu.
Now that my file server project is out of the way, I needed a way to mount its massive share on my linux servers. I also wanted to keep some home directories on the filer, however when I mounted it, the directory was owned by root and the user wasn’t allowed to write files to it.
To get around this, I started looking into various ways of controlling the permissions. I also wanted this to be mounted during boot, but first I needed to make a mount point.
mkdir /filer
Now I started playing with various methods to mount the share. The best method I was able to find was as follows.
mount //server/share /filer -t cifs -o gid=99,uid=99,dir_mode=0777,file_mode=0777,rw
In the above example, you can see that the share is mounted to /filer using the group id of 99 and user id of 99. On my system, these id’s are owned by the nobody user. Which is basically just a guest account. This will allow everyone to write to the mounted share.
The next step is to have the share mounted during boot up. So I needed to add an entry to the /etc/fstab file. Below is the entry I placed in my fstab file.
//(Servers IP)/filer /filer cifs gid=99,uid=99,dir_mode=0777,file_mode=0777,rw 0 0
Now whenever the server is restarted I can be assured that the share will be mounted with the permissions I wanted. After a quick test reboot I can now see that my share is mounted, and the permissions I wanted are set aswell.
root@myserver ~]# ls -ld /filer drwxrwxrwx 1 nobody nobody 0 Sep 16 23:58 /filer
As promised, here is the backup script I now have in place to take care of all my backup needs. I can’t take all of the credit, as the original idea came from this site. I just modified it to make it more robust and to better fit my needs.
To use, place all of the contents into a file anywhere on your system. I called mine, daily_backup.sh and placed it in the directory /root/scripts/. Once the script is in place, change the permissions to make it executable.
chmod 754 daily_backup.sh
Now modify the script changing the options and directories to suite your system and environment. To create the crontab entry, as root run the following.
crontab -eThen add the following line, which will execute our script everynight at 3:01AM.
1 3 * * * /root/scripts/daily_backup.sh
Below is the script as it is setup on my system. Feel free to modify it to better suite your needs. As aways comments are welcome and appreciated.
#!/bin/bash # # Daily backup # ######################################## ## Backup location options # Location of remote backups BACKUPDIR="/filer/Backup"; # Set to no if not backing up to a remote mount VERIFYMOUNT="yes"; # Local mount point of remote server MOUNTNAME="/filer"; # Database username DBUSER="sampleuser"; # Database password DBPASS="samplepass"; # Day to run full backup DOWFB="Sun"; ######################################## ## Backup data options # Space separated directories to backup DATADIRS="/var/www/html /etc"; # Space separated MySQL databases to backup DBNAMES=( mysql mydb1 mydb2 ); ######################################## ########## End User Options ############ ######################################## ######################################## ## Variables and checks used by script LIST="/tmp/backlist_$$.txt"; set $(date) if [ "$VERIFYMOUNT" == "yes" ]; then RESULT=`mount | grep $MOUNTNAME`; if [ ! "$RESULT" ]; then exit 1; fi fi ######################################## ## Create backup of data directories if test "$1" = "$DOWFB" ; then ####################################### ## Weekly full backup if [ ! -d "$BACKUPDIR/data" ]; then mkdir -p $BACKUPDIR/data fi tar cfz "$BACKUPDIR/data/data_full_$6-$2-$3.tgz" $DATADIRS rm -f $BACKUPDIR/data/data_diff* else ######################################## ## Daily incremental backup if [ ! -d "$BACKUPDIR/data" ]; then mkdir -p $BACKUPDIR/data fi find $DATADIRS -depth -type f ( -ctime -1 -o -mtime -1 ) -print > $LIST tar cfzT "$BACKUPDIR/data/data_diff_$6-$2-$3.tgz" "$LIST" rm -f "$LIST" fi ######################################## ## Create sql dump of databases if [ ! -d "$BACKUPDIR/database" ]; then mkdir -p $BACKUPDIR/database fi for db in ${DBNAMES[@]} do mysqldump -u $DBUSER --password=$DBPASS --opt $db > "$BACKUPDIR/database/$db-$6-$2-$3.sql" gzip "$BACKUPDIR/database/$db-$6-$2-$3.sql" done exit 0
