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Old 05-27-2009, 09:04 PM   #1
Registered: Sep 2008
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Question on ext3 => ext4 conversion in Jaunty

I just installed Jaunty and trying to convert into ext3 by typing in the console of liveCD.

sudo bash
tune2fs -O extents,uninit_bg,dir_index /dev/sda1
e2fsck -pf /dev/sda1
While at it, I encountered a long hiatus this message.

/dev/sda1: Group descriptor 3677 checksum is invalid.  FIXED.
/dev/sda1: Group descriptor 3678 checksum is invalid.  FIXED.
/dev/sda1: Group descriptor 3679 checksum is invalid.  FIXED.
/dev/sda1: Group descriptor 3680 checksum is invalid.  FIXED.
/dev/sda1: 112212/30154752 files (0.1% non-contiguous), 2468594/120607979 blocks
Is this normal?
Old 05-28-2009, 02:34 AM   #2
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There is limits to that conversion due to fragmentation. In case you red German (in other words your users panel lacks information):

I.e. for a true conversion you still have to backup your files, create an ext4 file system and restore.
Old 05-28-2009, 10:14 AM   #3
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--"I just installed Jaunty and trying to convert into ext3 by typing in the console of liveCD."---


Assuming that there is no important data at risk, do this:

a) Reformat the drive into ext3 (use the installer CD);
b) Install fresh Jaunty after reformatting it.

By then you shall be running that system under an ext3 drive.

This granting that there is no important data lost in the process. If you have important data in the current ext4 drive you may copy them first to a secure place, say into a separate drive, then proceed with the steps above.

Converting from one format to another often encounters a lot of trouble. Reformatting is easier.

If it is possible to make it simple by all means make the solution simple.

hope this helps.



ext4, jaunty

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