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Migrate existing Ext3 filesystems to Ext4

Terminal - Migrate existing Ext3 filesystems to Ext4
tune2fs -O extents,uninit_bg,dir_index /dev/yourpartition
2009-06-23 17:42:01
User: starchox
Functions: tune2fs
5
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Migrate existing Ext3 filesystems to Ext4

Before doing this, back-up all data on any ext3 partitions that are to be converted to ext4.

After running previous command you MUST run fsck, is needed to return the filesystem to a consistent state.

fsck -pDf /dev/yourpartition

Edit /etc/fstab and change the 'type' from ext3 to ext4 for any partitions that are converted to ext4.

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Alternatives

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Terminal - Alternatives

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What others think

I'm voting this up as it _sounds_ like a useful thing and I might well try it out soon after more research - but I'd like to ask starchox to clarify what version of tune2fs has the 'extents' option as it's not on the man page. Also, I think a warning not to run this on a mounted filesystem might be in order - perhaps tune2ef takes care of this, but maybe not.

Comment by bhepple 182 weeks and 3 days ago

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