[PATCH] UBUNTU: SAUCE: overlayfs: use shiftfs hacks only with shiftfs as underlay

Kleber Souza kleber.souza at canonical.com
Thu Apr 23 10:08:53 UTC 2020

On 23.04.20 11:52, Christian Brauner wrote:
> On Wed, Apr 22, 2020 at 05:02:28PM -0700, Andrei Vagin wrote:
>> On Sun, Apr 19, 2020 at 4:19 AM Christian Brauner
>> <christian.brauner at ubuntu.com> wrote:
>>> On Sun, Apr 19, 2020 at 01:59:18AM -0700, Andrei Vagin wrote:
>>>> The hack was introduced in ("UBUNTU: SAUCE: overlayfs: allow with
>>>> shiftfs as underlay") and it broke checkpoint/restore of docker
>>>> contains:
>>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1857257
>>>> The following script can be used to trigger the issue:
>> ...
>>>> Cc: Christian Brauner <christian.brauner at ubuntu.com>
>>>> Cc: Stefan Bader <stefan.bader at canonical.com>
>>>> Cc: Connor Kuehl <connor.kuehl at canonical.com>
>>>> Cc: Kleber Sacilotto de Souza <kleber.souza at canonical.com>
>>>> Fixes: 58009298c6bd ("UBUNTU: SAUCE: overlayfs: allow with shiftfs as underlay")
>>>> Signed-off-by: Andrei Vagin <avagin at gmail.com>
>>> Thanks for looking into this. Seems ok to me.
>>> Acked-by: Christian Brauner <christian.brauner at ubuntu.com>
>> Hi Christian,
>> Do you know why this patch isn't in the mailing list archive?
>> Do you know when we can expect to see this patch in the ubuntu kernel?
> My ack showed up on the list at least. I think what's happening is that
> your mail isn't whitelisted because you're not subscribed to the list.
> Let me resend for you. I think that this should show up in the next SRU
> cycle.
> Christian


The Kernel SRU schedule is available at:



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