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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.
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-priviā
leged processes are prevented from writing to the filesystem. The default percentage is 5%.
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.
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