Hi all, I'm trying to do some maintenance to my FC4 based linux system. When I run 'fsck.ext3 -p /dev/hda7' I get a message telling me it's dangerous to use fsck on a mounted filesystem. So I booted from knoppix cd to do it, but I got an error message telling me something like 'Filesystem has unsupported features / . Try to get a newer version of e2fsck'. So I tried with the fedora rescue disk but I couldn't get the file system unmounted (it mounts it under /mnt/sysimage, I tried everything to get it umounted but I got error messages telling 'device or resource busy'). Is there a way to use fsck in a safe way from inside FC4 or in another way to check/repair/maintain the filesystem??
Thanks in advance.

P.S. I also tried with Feather boot cd and got the same results as with knnoppix.

Hey,

I'm not sure about FC4 (I use Debian "Sarge") but I think you can enter (as root):

(The "-F" makes the system do an fsck check on all partitions at the next boot and the "-r" tells it to reboot)

I'm assuming this is a partition you cant just unmount??

You're right, I can't umount it, even if I try to remount it read-only it fails. I'll do what you suggested me to see what happens. Thanks for your reply.

Yes, it worked; thanks again.

I want to have a disk cleanup on rhel 5 file server like we have in windows. I am thinking of running a fsck command. But i have read that not to run this command on a mounted partition. What should i do ?

Please give me detail information about fsck and also tell me about the other utilities which i can use to system tuneup.