r327359: cylinder checksum failed: cg0, cgp: 0x4515d2a3 != bp: 0xd9fba319 Dec 30 23:29:24 <0.2>

[Warner Losh]

On Fri, Jan 12, 2018 at 8:28 AM, Ed Maste <emaste at freebsd.org> wrote:

> On 4 January 2018 at 03:10, Michael Tuexen <tuexen at freebsd.org> wrote:
> >
> > Not sure this helps: But we have seen this also after system panics
> > when having soft update journaling enabled. Having soft update journaling
> > disabled, we do not observed this after several panics.
> > Just to be clear: The panics are not related to this issue,
> > but to other network development we do.
>
> Both of my new co-op students have encountered this as well: after a
> panic (unrelated to the filesystem), SU+J fsck recovery runs at boot,
> and than many cylinder checksum warnings are emitted by the kernel.
> The students used the default installer configuration; it sounds like
> we should disable SU+J by default in the installer until this issue is
> addressed.
>

I've posted https://reviews.freebsd.org/D13884 as well to change fsck from
silently fixing the cg checksum to one that's whiny about it as well.

Warner