Linux Filesystem access restriction

Pico_01 · 07-01-2005, 01:25 PM

Hi,

I want to setup one of my local partitions such that it has access to users as well as root processes. I want to limit access to that filesystem such that if the filesystem is 80% full, then no user process can write to that file system, only root process can write to that file system. Is there any way to setup that? Any help is appreciated.

Thanks.

sundialsvcs · 07-01-2005, 04:26 PM

Quotas?

What is the underlying problem that is giving rise to this request?

Noth · 07-01-2005, 06:18 PM

You can setup a percentage of disk space to be reserved for root-only, but only at mkfs time.

Code:

-m reserved-blocks-percentage
              Specify  the  percentage of the filesystem blocks reserved for the super-user.  This avoids fragmentation, and allows root-owned daemons, such as syslogd(8), to continue to function correctly after non-privi‐
              leged processes are prevented from writing to the filesystem.  The default percentage is 5%.

stefan_nicolau · 07-03-2005, 09:06 AM

Quote:

You can setup a percentage of disk space to be reserved for root-only, but only at mkfs time.

Use tune2fs to change the value set at mkfs time.

Noth · 07-03-2005, 03:25 PM

Quote:

Use tune2fs to change the value set at mkfs time.

Duh, can't believe I forgot about that.

Pico_01 · 07-07-2005, 12:34 PM

Thanks a lot for your help.

We have an environment in which root daemons write into tmp area and we continuously run into problems due to tmp full.
That's the reason to look into this option.