Messages in this thread | | | Date | Fri, 3 Aug 2018 09:31:03 -0400 | From | Mike Snitzer <> | Subject | Re: LVM snapshot broke between 4.14 and 4.16 |
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On Thu, Aug 02 2018 at 5:52pm -0400, Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Thu, Aug 2, 2018 at 2:39 PM WGH <wgh@torlan.ru> wrote: > > > > I've just found one public report of this bug, though: > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900442 > > Yeah, it does sound like we should fix this issue.
Debian is notorious for having a stale and/or custom lvm2. Generally speaking, it is recommended that lvm2 not be older than the kernel (but the opposite is fine).
Given the narrow scope of users impacted (read-only snapshot creation is very niche, certainly not the default): I don't think it is worth making fiddly changes in dm-snapshot to warn the user and override the permissions for the cow device.
Mike
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