Language Selection

English French German Italian Portuguese Spanish

Migrating a live system from ext3 to ext4 filesystem

Filed under
HowTos

This article is meant to serve as a guide for migrating a live system from ext3 to an ext4 filesystem, including migration of files to use extents, a major feature in ext4. It describes the entire migration procedure, including common pitfalls involving a migration of a live system, as opposed to doing a fresh install.

Reasons for conversion

The explanation of advantages and disadvantages of ext4 is beyond the scope of this article. If you are not affected by the limitations of ext3, and not willing to take risks, it may not be worth it. On the other hand, on successful completion of the migration procedure your system may perform faster, experience shortened file system checks, and have increased reliability with no ill effects.

Migrating to ext4

Word of warning

Do a backup before attempting this procedure. It may render your system unbootable, and may destroy your data.

rest here




More in Tux Machines

Linux on Servers

Debian, Devuan, and Ubuntu

  • My Free Software Activities in April 2016
    I handled a new LTS sponsor that wanted to see wheezy keep supporting armel and armhf. This was not part of our initial plans (set during last Debconf) and I thus mailed all teams that were impacted if we were to collectively decide that it was OK to support those architectures. While I was hoping to get a clear answer rather quickly, it turns out that we never managed to get an answer to the question from all parties. Instead the discussion drifted on the more general topic of how we handle sponsorship/funding in the LTS project.
  • Initial Planning For Ubuntu 16.10 Today At UOS
    Beyond the announcement that Ubuntu 16.10 won't ship with Mir and Unity 8 by default, many other items were discussed for the Ubuntu 16.10 release due out in October.
  • Ubuntu 16.10 Isn't Going To Use Mir / Unity 8 By Default
    Well, another setback for Unity 8 and Mir. Kicking off the Ubuntu Online Summit for Ubuntu 16.10, it's been confirmed that the Unity 8 desktop and Mir display server will not be the default for the desktop spin. Similar to the current situation with existing Ubuntu releases, Unity 8 and Mir will be available as an opt-in feature for users wanting to upgrade their desktop, but Unity 7 and the faithful X.Org Server is planned to be the default for Ubuntu 16.10 Yakkety Yak.
  • Devuan Beta Release
    After two years in development, a beta release of the Devuan distro has made it into the world (Devuan is a registered trademark of the Dyne.org foundation). Devuan is a very Debian-ish distro. In fact, it basically is Debian, with one notable absence. Devuan doesn't use systemd. In fact, that's its main claim to fame. Devuan was created to offer an alternative to Debian fans who were alienated by the controversial switch to systemd.

Leftovers: OSS

today's howtos