EXT4 online defrag

Tim Gardner tim.gardner at canonical.com
Fri Jan 23 13:54:30 GMT 2009

Andy Whitcroft wrote:
> We have a request (via launchpad) to pull in patches for ext4 to enable
> online defrag on our queue.  Currently these patches are not in
> mainline, though they appear slated to hit .29 or .30.  My feeling 
> is that with the bugs we have open hinting at ext4 stability issues it
> would be very presumtious to add yet more patches which are not in
> mainline.  There is a high probabsaility we will have to pull in some
> ext4 patches to fix these other issues and the online defrag patches can
> only increase the difficulty.
> I feel our position on this therefore should be that we are not going to
> fix it as the risk is so high, and indicate that we are likely to get
> this functionality for free in K.K.
> Comments?
> -apw

I am not at all inclined to mess around with experimental patches on a
file system. So yes, I completely agree with your reservations.

Tim Gardner tim.gardner at canonical.com

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