On 12/07/2017 23:20, Peter Wemm wrote:
> We mostly run HEAD in the freebsd.org cluster. Sometime in the last few
> an ugly zfs problem has surfaced. If a redundant volume is degraded, zfs
> panics on boot. If a drive fails while running, or is manually put offline,
> panics the same way.
> I do not have a smoking gun, but I am suspicious of the June 28th commits
> (starting at r320156) and their follow-ups. eg: r320452.
> I believe single disk systems will *not* be affected by this - the panic only
> happens when a raidz (and presumably mirror) degrades. Your laptop etc
> be fine.
> I apologize for being vague - I do not know more. Folks running HEAD should
> take appropritate precautions (eg: keeping a known-good kernel.old and
> around). This is always advisable when running HEAD anyway, particularly so
> now. For us, a kernel.old from June 18th worked fine.
My apologies for the bug.
Everyone affected, could you please test the patch from the bug report?
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