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On 12/30/2013 06:02 PM, Robert Collins wrote:
> On 30 December 2013 22:51, Thomas Goirand <zigo at debian.org> wrote:
> 
>> IMO, switching to ext4 is a very bad idea, because ext4 doesn't support
>> online resize2fs, while ext3 does, so switching to ext4 is breaking
>> cloud-init!!!
> 
> It supports it just fine. (I just resized a 4TB volume to 10TB)...
> online. But even if it didn't, the ephemeral volume is formatted by
> the hypervisor, the one where resize is needed is the root device,
> which is separate.
> 
> -Rob

Oh ok, thanks for correcting me. This must be a new feature of recent
kernels, and I needed to update myself then.

Someone told me that it only expand, not shrink, when doing online
resize. Can you confirm that? (probably the feature has been added also)

Cheers,

Thomas