Question

2

file system associated with /var?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 1885 / 2 Years ago, wed, june 22, 2022, 11:54:36

while reading about linux,I got the following:

The /var directory may be put in its own filesystem so that growth of the files can be accommodated and the file sizes do not fatally affect the system.

when I tried to find out the file system for /var by $ df - Th ,I got..

Filesystem     Type      Size  Used Avail Use% Mounted on

/dev/sda5      ext4      141G   19G  116G  14% /

none           tmpfs     4.0K     0  4.0K   0% /sys/fs/cgroup

udev           devtmpfs  1.5G  4.0K  1.5G   1% /dev

tmpfs          tmpfs     294M  1.2M  293M   1% /run

none           tmpfs     5.0M     0  5.0M   0% /run/lock

none           tmpfs     1.5G   38M  1.4G   3% /run/shm

none           tmpfs     100M   60K  100M   1% /run/user

here I am not getting /var on mounted on attribute, so what type of file system is associated with /var exactly? how do I find it?

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

imberst

Add To Favorites

Follow

Total Points: 370

Total Questions: 107

Total Answers: 123

Location: French Polynesia

Member since Tue, Jul 7, 2020

4 Years ago

answered 2 Years ago turhizz · Accepted Answer

Quoting your question:

The /var directory may be put in its own filesystem...

(Emphasis mine.) They key phrase here is may be. It's not uncommon to do so. But the default Ubuntu installation settings don't do so, so you don't have /var on a separate partition.

There are many scenarios where /var belongs on a different filesystem (or even a different disk):

You have an application that does a lot of logging. In this case you'd want to protect root (/) from becoming full.

You're using an SSD for / and have an application that makes a lot of read/writes to /var. In this case you'd want it on a normal HDD.

You're using an application that is I/O intensive (using both storage space and a lot of read/writes), such as a mail server. In this case you'd want /var on a RAID array.

And so on... Also see: Why put things other than /home to a separate partition?