[DRBD-user] linux-4.11/drbd-8.4: drbd device stuck at "100% utilization" with no reads/write going to underlying device

Lutz Vieweg lvml at 5t9.de
Fri May 12 19:03:18 CEST 2017

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

On 05/11/2017 09:58 AM, Lars Ellenberg wrote:
>> I recently tried to update a pair of servers from linux-4.9 to linux-4.11 that
>> use DRBD 8.4.x (as included by the mainline linux kernel from kernel.org).
>> Any ideas what might go wrong here?
> Yes.
> Some upstream kernel patch that was not even Cc'ed to us broke DRBD.

I can now confirm that the patch
   bdfafc4ffdd2 ("locking/atomic, kref: Kill kref_sub()")
you posted does remove the symptom on our machines - thanks!


Lutz Vieweg

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