Re: Exclusive-lock Ceph

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On Mon, Jul 24, 2017 at 2:15 PM,  <lista@xxxxxxxxxxxxxxxxx> wrote:
> 2 questions,
>
>
>
> 1 In the moment i use kernel 4.10, the exclusive-lock not works fine in
> kernel's version less than < 4.12, right ?

Exclusive lock should work just fine under 4.10 -- but you are trying
to use the new "exclusive" map option that is only available starting
with kernel 4.12.

> 2 The comand  with exclusive
> would this  ?
>
> rbd map --exclusive test-xlock3

Yes, that should be it.

> Thanks a Lot,
>
> Marcelo
>
>
> Em 24/07/2017, Jason Dillaman <jdillama@xxxxxxxxxx> escreveu:
>> You will need to pass the "exclusive" option when running "rbd map"
>> (and be running kernel >= 4.12).
>>
>> On Mon, Jul 24, 2017 at 8:42 AM,  <lista@xxxxxxxxxxxxxxxxx> wrote:
>> > I'm testing ceph in my enviroment, but the feature exclusive lock don't
>> > works fine for me or maybe i'm doing something wrong.
>> >
>> > I testing in two machines create one image with exclusive-lock enable,
>> > if I
>> > understood correctly, with this feature, one machine only can mount and
>> > write in image at time.
>> >
>> > But When I'm testing, i saw the lock always is move to machine that try
>> > mount the volume lastly
>> >
>> > Example if i try mount the image in machine1 i see ip the machine1 and i
>> > mount the volume in machine1 :
>> > #rbd lock list test-xlock3
>> > There is 1 exclusive lock on this image.
>> > Locker      ID                        Address
>> > client.4390 auto XXXXXXXXXXXXXXXX 192.168.0.1:0/2940167630
>> >
>> > But if now i running rbd map and try mount image in machine2, the lock
>> > is
>> > change to machine2, and i believe this is one error, because if lock
>> > already
>> > in machine one and i write in image, the machine2 don't should can mount
>> > the
>> > same image in the same time.
>> > If i running in machine2 now, i see :
>> >
>> > #rbd lock list test-xlock3
>> > There is 1 exclusive lock on this image.
>> > Locker      ID                        Address
>> > client.4491 auto XXXXXXXXXXXXXXXXXX 192.168.0.2:0/1260424031
>> >
>> >
>> >
>> > Exclusive-lock enable in my image :
>> >
>> > rbd info  test-xlock3 | grep features
>> > features: exclusive-lock
>> >
>> >
>> > i'm doing some wrong ? Existing some conf, to add in ceph.conf, to fix
>> > this,
>> > if one machine mount the volume, the machine2 don't can in the same
>> > time, i
>> > read about command rbd
>> > lock, but this command seem deprecated.
>> >
>> >
>> >
>> > Thanks, a lot.
>> > Marcelo
>> >
>> >
>> > _______________________________________________
>> > ceph-users mailing list
>> > ceph-users@xxxxxxxxxxxxxx
>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>> >
>>
>>
>>
>> --
>> Jason



-- 
Jason
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