Convert File System without format.

hack3rcon · 01-23-2017, 12:32 AM

Hello.
How can I convert Ext3 to Ext4 without format?

Thank you.

syg00 · 01-23-2017, 01:04 AM

How about you make at least some effort to find out for yourself.

hack3rcon · 01-23-2017, 03:23 AM

Quote:

Originally Posted by syg00

How about you make at least some effort to find out for yourself.

I found but I can't understand some parameters :

http://www.tecmint.com/what-is-ext2-...-file-systems/

pan64 · 01-23-2017, 03:28 AM

especially which one?

Habitual · 01-23-2017, 05:27 AM

Quote:

Originally Posted by hack3rcon

I found but I can't understand some parameters

Start with:

Warning: Warning: Please take important data backup before executing below commands.

Run. Don't walk.
That is my opinion.

fatmac · 01-23-2017, 05:55 AM

After having backed up your data, below is what it is said that you have to do, the only possible way to go wrong is if you select the wrong disk.

Quote:

Converting Ext3 to Ext4

To enable the ext4 features on an existing ext3 filesystem, use the command.

# tune2fs -O extents,uninit_bg,dir_index /dev/hdXX

WARNING: You cannot revert or mount back to ext3 filesystem once you run above command.

After running this command we MUST run fsck to fix up some on-disk structures that tune2fs has modified.

# e2fsck -pf /dev/hdXX

WARNING: Please try all these above commands on your tesing Linux server.

hack3rcon · 01-24-2017, 09:02 AM

Quote:

Originally Posted by pan64

especially which one?

Parameters like "dir_index,has_journal,uninit_bg" or "extents,uninit_bg,dir_index" are fixed?
If I want convert "Ext3 to "XFS" or "Btrfs" then these parameters changed to?

jefro · 01-25-2017, 03:30 PM

That would be a recipe for disaster. Backup. Test backup. Make new filesystem and restore.

XFS and Btrfs are very age dependent. Using the filesystem version for the distro is almost mandatory.