Re: panic: ffs_snapshot_mount: already on list

["J. Hannken-Illjes" <hannken%eis.cs.tu-bs.de@localhost>]

> On 15. Sep 2018, at 17:06, Manuel Bouyer <bouyer%antioche.eu.org@localhost> wrote:
> 
> On Sat, Sep 15, 2018 at 04:34:41PM +0200, J. Hannken-Illjes wrote:
>> This will damage all persistent snapshots if you boot a kernel with FFS_NO_SNAPSHOT
>> Pleas don't commit ...
> 
> Can you explain why ? The problem Emmanuel is trying to fix is real ...
> I can't see how a ffs_snapshot_mount() which is a NOP could damage
> anything.

There will be no copy-on-write to persistent snapshots so the snapshots
will contain garbage where the real file system writes data.

I will be back from vacancies in October and take a deeper look.

--
J. Hannken-Illjes - hannken%eis.cs.tu-bs.de@localhost - TU Braunschweig (Germany)