"Juergen Weigert" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Hi coreutils people! > > On a recent SUSE Linux df became unreliable for e.g. USB-drives. > This is because hald automatically mounts and unmounts such drives > as they are accessed. > > Usually I get something like: > > $ df /media/USB_DISK > Filesystem 1K-blocks Used Available Use% Mounted on > /dev/sda1 0 0 0 - /media/USB_DISK > > only if the USB_DISK is being accessed, I get the expected output. > > $ ls /media/USB_DISK > /dev/null; df /media/USB_DISK > Filesystem 1K-blocks Used Available Use% Mounted on > /dev/sda1 252522 238718 13804 95% /media/USB_DISK > > A simple enhancement for df is to actively access the USB_DISK while running > statfs(). I've added an opendir() call in the attached patch. This can be > suppressed with a new commandline option -n.
I have just bumped into this issue for a bash plug-in I wrote for an application that someone is running on Suse. I had never heard of df not showing up output when some filesystem had been mounted. So now I have to decide how to harden the bash script against this. I see in this thread that some discussion was had about fixing a statfs() function instead of df. Was there resolution to this and is the user who is having trouble having it because he is on an older version of df? The simple example, $ ls /media/USB_DISK > /dev/null; df /media/USB_DISK does not work for my user. df still reports a size of 0. One of my functions does work on this system, but it is a series of find commands. I don't want to clog the link to the USB device with things that aren't necessary when I really just need free space. Does anyone have any ideas on a simple and concise way to might deal with this in the script. I realize that it is odd because hald is someone else's doing, but I'm not sure if there is some reasonably simple way for me to make sure the media is mounted so df will report what it needs to report. I already issued the mount command, so from the script's (and my) perspective it should be still mounted when df runs. Thanks, Kevin R. Bulgrien kbulgrien (at) att dot net _______________________________________________ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
