[PROBLEM] sudo: unable to write to /var/lib/sudo/xbian/: No space left on device

[psyLord]

Hey everyone,
I'm using xbian some months yet. But now I got a problem and I don't know how to solve it on my own.

Since yesterday, I got a 'No space left on device' error message. I also started to read in the internet of this problem. But I couldn't solve it.

Here is the output of df -h:

Quote:Filesystem..........Size...Used...Avail...Use%...Mounted on
rootfs.................7.2G..4.9G...2.2G....70%...../
/dev/mmcblk0p2..7.2G..4.9G...2.2G....70%...../
devtmpfs............188M..4.0K...188M....1%...../dev
none..................38M...180K...38M.....1%....../run
/dev/mmcblk0p1..34M...20M....15M.....59%..../boot
/dev/mmcblk0p2..7.2G..4.9G...2.2G....70%...../home
/dev/mmcblk0p2..7.2G..4.9G...2.2G....70%...../lib/modules
/dev/sda1...........3.9G..3.9G....81M....98%...../media/58DD-5D36
/dev/mmcblk0p2..7.2G..4.9G...2.2G....70%...../xbmc-backup

The free space looks good.

And here the output of df -i:

Quote:Filesystem...........Inodes...IUsed...IFree...IUse%...Mounted on
rootfs.....................0..........0.........0.......-........./
/dev/mmcblk0p2......0..........0.........0.......-........./
devtmpfs.............47910.....286.....47624...1%....../dev
none...................47926.....230.....47696...1%....../run
/dev/mmcblk0p1......0..........0.........0.......-........./boot
/dev/mmcblk0p2......0..........0.........0.......-........./home
/dev/mmcblk0p2......0..........0.........0.......-........./lib/modules
/dev/sda1...............0..........0.........0.......-........./media/58DD-5D36
/dev/mmcblk0p2......0..........0.........0.......-........./xbmc-backup

Why are the Inodes number zero in the most cases?

I already started to delete some files (e.g. in home/ and some old log files). But I'm not really sure where to look at, because nothing helped so far. And it also took ages to delete a single file.

Why is there an error 'No space left on device'? (e.g. sudo rm -r bla/ -> sudo: unable to write to /var/lib/sudo/xbian/3: No space left on device) Is my SDcard broken or is there an error with the file system?

Does someone running in the same problem and does someone knows how to solve it?

Best, psyLord