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

From: Warner Losh <imp_at_bsdimp.com>
Date: Fri, 12 Jan 2018 08:51:31 -0700
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
Received on Fri Jan 12 2018 - 14:51:33 UTC

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