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Old 03-28-2005, 03:40 PM   #1
Registered: Jun 2004
Distribution: Slack x86 current
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fsck on root filesystem without reboot?

Hi all

I hope I'm on topic.

There's a way to run fsck on root filesystem without rebooting the system?

I cannot run fsck on a mounted filesystem and (obviously) I can't umount it while the system is running.

I tried remounting it in read-only mode like seen on google search but I get a "busy" error and I can't do it.

The filesystem is an ext3

I want to fsck it because i was low on disk space ( 100 mb free ), so I deleted 400 mb of crap and I'm still with only 100 mb free.

And I can't find this crap, with a du -sh * I can't find nothing strange .. like clusters wasn't signed as free ..
Old 03-28-2005, 04:44 PM   #2
Registered: Feb 2003
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Why....wont you reboot?
Please...just reboot...see if you have an empty drive now.If not...reboot into recovery mode and run fsck again with other parameters to see if theres a problem and exactly what it is.
If you run it again to do some kind of comparison.
I like rkhunter...also I use tripwire....things like these help let you spot a rootkit which if your space problem still exists is exactly what you have.
If a rootkit is indeed on your your harddrive and reinstall.
Old 03-29-2005, 04:34 AM   #3
Registered: Jun 2004
Distribution: Slack x86 current
Posts: 134

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The real reason 'coz I won't reboot is for exercise .. I want to solve every problem without rebooting.

The problem is on my home server, and I don't run rootkit detection SW.

At this point I hope that a fsck on reboot will fix all .. and that no rootkit are on my system ..
Old 03-29-2005, 04:55 AM   #4
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you'll have to "unload" the filesystem before you can remount it read-only ( you'll have to unmount any filesystems which are mounted on top of your filesystem, like proc)


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