Ext4 - Linux Kernel Newbies - The Diigo Meta page

• 19 Oct 09
  

  David Corking

  ext4 survival guide - make sure you can make and use a repair disk that can support this before you try it

  Linux ext3

• 08 Oct 09
  

  Hardik Bhatt

  This page is a description of the features of the Ext4 filesystem (merged in the Linux Kernel during the 2.6.28 development), and instructions of how to migrate and use it.

• 02 May 09
  

  Kenyth Zeng

  ext4 linux migration ext3 tutorial article

  • Any existing Ext3 filesystem can be migrated to Ext4 with an easy procedure which consists in running a couple of commands in read-only mode (described in the next section).
  • If you need the advantages of Ext4 on a production system, you can upgrade the filesystem. The procedure is safe and doesn't risk your data
  • 8 more annotations...
  • • there's a possibility, described in the next section, of mounting a Ext3 filesystem with Ext4 without using the new disk format and you'll be able to mount it with Ext3 again, but you lose many of the advantages of Ext4
    • This is inefficient for large files, specially on large file delete and truncate operations,
    • An extent is basically a bunch of contiguous physical blocks.
    • One very important thing to keep in mind is that there is NOT Ext4 GRUB support.
    • You also need an updated e2fsprogs tool, of course, the latest stable version -1.41.3- is recommended.
    • rootfstype=ext4
    • There's another thing that must be mentioned. All your existing files will continue using the old indirect mapping to map all the blocks of data. The online defrag tool will be able to migrate each one of those files to a extent format
    • You can mount an existing Ext3 filesystem with "mount -t ext4 /dev/yourpartition /mnt"
• 01 May 09
  

  Sergey Kucherenko

  fs linux

• 27 Feb 09
  

  Marcelo Castoldi
• 26 Dec 08
  

  junkie o0o

  filesystem

• 25 Dec 08
  

  Kazuo Moriwaka

Would you like to comment?

Join Diigo for a free account, or sign in if you are already a member.