How to tune ext* filesystem ?

[Humble]

For ex:

How to change journel size/device of a ext* file system?

[Humble]

It can be done by below command ..

tune2fs

tune2fs allows the system administrator to adjust various tunable filesystem parameters on Linux ext2, ext3, or ext4 filesystems.
The current values of these options can be displayed by using the -l option to tune2fs(8) program, or by using the dumpe2fs(8) program.

The device specifier can either be a filename (i.e., /dev/sda1), or a LABEL or UUID specifier: “LABEL=volume-name” or “UUID=uuid”. (i.e.,
LABEL=home or UUID=e40486c6-84d5-4f2f-b99c-032281799c9d).

Suppose you want to change the journel options as asked above, you can make use of “-J” option.. Please refer man page of tune2fs for more information on this.

   -J journal-options
              Override the default ext3 journal parameters. Journal options are comma separated, and may take an argument using the  equals  ('=')
              sign.  The following journal options are supported:
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