22 Jan
2021
22 Jan
'21
7:02 a.m.
Hi !
I respond to the list, as it may help others.
I also reorder the response.
On Mon, Jan 18, 2021 at 2:41 PM Gilles Mocellin <
gilles.mocellin(a)nuagelibre.org> wrote:
> Hello Cephers,
>
> On a new cluster, I only have 2 RBD block images, and the Dashboard
> doesn't manage to list them correctly.
>
> I have this message :
> Warning
> Displaying previously cached data for pool veeam-repos.
>
> Sometime it disappears, but as soon as I reload or return to the listing
> page, it's there.
>
> What I've seen, is a high CPU load due to ceph-mgr on the active
> manager.
> And also stack-traces like this :
[...]
> dashboard.exceptions.ViewCacheNoDataException:
ViewCache: unable to
> retrieve data
>
> I also see that, when I try to edit an image :
>
> 2021-01-18T11:13:26.383+0100 7f00199ca700 0 [dashboard ERROR
> frontend.error]
> (https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/#/block/rbd/edit/veeam-> >
repos%252Fveeam-repo2-vol1
> <https://fidcl-mrs4-sto-sds.fidcl.cloud:8443/#/block/rbd/edit/veeam-repos%
> 252Fveeam-repo2-vol1>): Cannot read property 'features_name' of
> undefined
>
> TypeError: Cannot read property 'features_name' of undefined
[...]
>
> But that's perhaps just becaus I open an Edit window on the image and it
> does not have the datas.
> The Edit window is empty, and I can't edit things, especially, I wan't
> to resize the image.
>
[...]
> --
> Gilles
Le jeudi 21 janvier 2021, 21:56:58 CET Ernesto Puerta a écrit :
Hey Gilles,
If I'm not wrong, that exception (ViewCacheNoDataException) happens when
the dashboard is unable to gather all required data from Ceph within a
defined timeout (5 secs I think, since the UI refreshes the data every ~5
seconds).
It'd be great if you could provide the steps to reproduce it and some
insights into your environment (number of RBD pools, number of RBD images,
snapshots, etc.).
Kind Regards,
Ernesto
OK,
As it is now, it always hapens, on the image listing, I have the Warning and
the list is not always up to date, if I create an image, I must wait very long
to see it.
Also, I can not edit the 2 big images I have. Perhaps the size is important,
they are 2 images of 40 TB.
If I create a 1 GB test image, I can edit and resize it.
But impossible withe the big image, the windows opens but all the fields are
empty.
Also, if it can matter, the images use a data pool (EC 3+2).
I have 2 pools, a replicated one for metadatas veeam-repos (replic x3), and a
data pool veeam-repos.data (EC 3+2).
My cluster has 6 nodes with AMD 16 cores CPU, 128 GB RAM, 10 8 TB HDD.
So 60 OSD. Soon doubling everything to 12 nodes.
Usage, as the pool and image names can tell, is to mount RBD image as a XFS
filesystem for a Veeam Backup Repository (krbd, because nbd-rbd tailed
regularly, especially during fstrim).