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Re: [atomic-devel] Fedora 26 change: using overlayfs as default

Yes I plan on writing a blog on this once we have an update to
docker-storage-setup to handle setting up /var/lib/docker on a separate


Once we get this merged, we could easily move to overlayfs as default on
atomic host, but still allow a user to switch from overlay back to

On 12/13/2016 12:23 PM, Chris Murphy wrote:
> On Tue, Dec 13, 2016 at 8:01 AM, Daniel J Walsh <dwalsh redhat com> wrote:
>> The only way to change from one storage to the other is to use
>> atomic storage export
>> change the config
>> atomic storage reset
>> atomic storage import
> Nifty.
> A migration tool would have to juggle the potential for insufficient
> space in /var for the export; or sufficient space for export but then
> not importing. And then there's cleanup of otherwise dead space used
> by device mapper. So possibly more than one fs resize is necessary.
> I'd say probably leave things alone for upgrades, but documenting a
> strategy for migrating to overlay is OK.

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