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SubjectRe: [BREAKAGE] Since 4.18, kernel sets SB_I_NODEV implicitly on userns mounts, breaking systemd-nspawn
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Hi,
I would like to thank you all for reacting to this issue so quickly, and
I am really sorry for sending the message several time. I thought there
was a problem with the way it was formatted or some such, hence why I
sent it several times, because none of the messages seemed to get through.
So yeah, real sorry about that bit, and thanking you all

Gabriel C a écrit :
> Am So., 23. Dez. 2018 um 00:02 Uhr schrieb Linus Torvalds
> <torvalds@linux-foundation.org>:
>>
>> On Sat, Dec 22, 2018 at 2:49 PM Christian Brauner
>> <christian.brauner@canonical.com> wrote:
>>>
>>> To be fair, no one apart from me was pointing out that it actually
>>> breaks people including systemd folks
>>> even though I was bringing it up with them. I even tried to fix all of
>>> userspace after this got NACKED
>>
>> Seriously, the "we don't break user space" is the #1 rule in the
>> kernel, and people should _know_ it's the #1 rule.
>>
>> If somebody ignores that rule, it needs to be escalated to me.
>> Immediately. Because I need to know.
>>
>
> I do that usually but I didn't saw Christian's revert the time and I
> never hit that issue.
> Just saw that now because the unusual [BREAKAGE] prefix.
>
>> I need to know so that I can override the bogus NAK, and so that we
>> can fix the breakage ASAP. The absolute last thing we need is some
>> other user space then starting to rely on the new behavior, which just
>> compounds the problem and makes it a *much* bigger problem.
>>
>
> Yes and you are right ..
> https://github.com/lxc/lxc/pull/2438
>
> I've added an comment there about 4.20.0.
>
> BR,
>
> Gabriel
>

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