[DRBD-user] DRBD is passing I/O-error to upper layer, but should not

Matthias Hensler lists-drbd at wspse.de
Mon Jan 28 22:13:13 CET 2013

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


On Mon, Jan 28, 2013 at 06:26:50PM +0100, Lars Ellenberg wrote:
> Ok. I think we may in fact have a real bug there.  I still need to
> reproduce and double check, but it looks like "empty flushes" (file
> system barriers) on a Diskless Primary may be affected, obviously only
> on systems that do support those, which is drbd 8.3.14 and 8.3.15, on
> kernels that implement "barrier" as REQ_FLUSH/REQ_FUA (not
> drbd 8.4 should be good.
> We'll see what we can do.

OK, thanks. I'd rather use a fixed 8.3-version, than upgrading to 8.4 on
that cluster (at least as short-term solution, an 8.4 upgrade might
happen later this year if properly tested in our environment).

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