online resize of ext3 possible?

Andreas Dilger adilger at
Mon Apr 19 21:02:24 UTC 2004

On Apr 19, 2004  13:47 -0700, Robert Walsh wrote:
> I remember someone mentioning some new and improved mechanism for doing
> online-resize some time back, but I haven't heard much about it since. 
> It involved some changes to the ext3 format.  What was all that about? 
> Has anything happened since?

This is the "meta block group" changes, and compatibility support for that
just went into 2.4.25.  It is in 2.6 and e2fsprogs for a while already.
Nothing actually uses it yet, but in theory the online resizing could
start using it.

Cheers, Andreas
Andreas Dilger

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