On 2017-07-05 20:42, Ilya Dryomov wrote:
> On Wed, Jul 5, 2017 at 8:32 PM, David Turner <drakonst...@gmail.com> wrote:
>
>> I had this problem occasionally in a cluster where we were regularly mapping
>> RBDs with KRBD. Something else we saw was that after this happened for
>> un-mapping RBDs, was that it would start preventing mapping some RBDs as
>> well. We were able to use strace and kill the sub-thread that was stuck to
>> allow the RBD to finish un-mapping, but as it turned out, the server would
>> just continue to hang on KRBD functions until the server was restarted. The
>
> Did you ever report this?
>
> Thanks,
>
> Ilya
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This may or may not be related, but if you do a lot of mapping/unmapping
it may be better to load the rbd module with
modprobe rbd single_major=Y
load it before running targetcli or rtslib as they load it without this
param.
/Maged
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