Can you please provide steps to repeat this scenario? What is/was the
client running on the host at 192.168.80.235 and how did you shut down
that client? In your PR [1], it showed a different client as a watcher
("192.168.80.235:0/34739158 client.64354 cookie=1"), so how did the
previous entry get cleaned up?
BTW -- unrelated, but k8s should be creating RBD image format 2 images
[2]. Was that image created using an older version of k8s or did you
override your settings to pick the deprecated v1 format?
[1] https://github.com/kubernetes/kubernetes/pull/56651#issuecomment-352850884
[2] https://github.com/kubernetes/kubernetes/pull/51574
On Wed, Dec 20, 2017 at 10:24 AM, Serguei Bezverkhi (sbezverk)
<sbezverk@xxxxxxxxx> wrote:
> Hello,
>
> I hit an issue with latest Luminous when a Watcher is not timing out when the image is not mapped. It seems something similar was reported in 2016, here is the link:
> http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-August/012140.html
> Has it been fixed? Appreciate some help here.
> Thank you
> Serguei
>
> date; sudo rbd status raw-volume --pool kubernetes
> Wed Dec 20 10:04:19 EST 2017
> Watchers:
> watcher=192.168.80.235:0/3789045165 client.64439 cookie=1
> date; sudo rbd status raw-volume --pool kubernetes
> Wed Dec 20 10:04:51 EST 2017
> Watchers:
> watcher=192.168.80.235:0/3789045165 client.64439 cookie=1
> date; sudo rbd status raw-volume --pool kubernetes
> Wed Dec 20 10:05:14 EST 2017
> Watchers:
> watcher=192.168.80.235:0/3789045165 client.64439 cookie=1
>
> date; sudo rbd status raw-volume --pool kubernetes
> Wed Dec 20 10:07:24 EST 2017
> Watchers:
> watcher=192.168.80.235:0/3789045165 client.64439 cookie=1
>
> sudo ls /dev/rbd*
> ls: cannot access '/dev/rbd*': No such file or directory
>
> sudo rbd info raw-volume --pool kubernetes
> rbd image 'raw-volume':
> size 10240 MB in 2560 objects
> order 22 (4096 kB objects)
> block_name_prefix: rb.0.fafa.625558ec
> format: 1
>
>
>
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--
Jason
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