On Fri, Nov 25, 2016 at 04:22:45PM +0100, Lars Ellenberg wrote:
> On Thu, Nov 24, 2016 at 03:25:28PM +0100, Laszlo Fiat wrote:

Laszlo,
I finally found time to look at this in detail again and:

> > Nov 24 00:13:02 hufot-s-apl0004 kernel: [643314.104776]
>       drbd r4/0 drbd4: ASSERTION test_bit(BME_NO_WRITES, &bm_ext->flags)
>               FAILED in drbd_try_rs_begin_io
> 
> > Nov 24 00:13:02 hufot-s-apl0004 kernel: [643314.107260] ------------[ cut 
> > here ]------------
> > Nov 24 00:13:02 hufot-s-apl0004 kernel: [643314.109802] kernel BUG at 
> > /home/lanlaf/data/comp/drbd-9.0.5-1/drbd/lru_cache.c:571!
> 
> I may have worked around this particular bug already,

Nope, this one is not yet understood.

We know where it crashes,
but I'd like to understand how to provoke it.

I'd like to know what happened *before* the first ASSERTION and BUG,
what events lead up to this.

Do you still happen to have the logs,
or can recall what you did to "make it crash" in this way?

Thanks,


-- 
: Lars Ellenberg
: LINBIT | Keeping the Digital World Running
: DRBD -- Heartbeat -- Corosync -- Pacemaker

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