Hello Ernesto, Le 2021-02-10 18:37, Ernesto Puerta a écrit : Here is one of my rbd info : fcadmin -> sudo rbd --id veeam --image veeam-repos/veeam-repo1-vol1 info rbd image 'veeam-repo1-vol1': size 40 TiB in 10485760 objects order 22 (4 MiB objects) snapshot_count: 0 id: 16c20a43741ab4 data_pool: veeam-repos.data block_name_prefix: rbd_data.13.16c20a43741ab4 format: 2 features: layering, exclusive-lock, object-map, fast-diff, deep-flatten, data-pool op_features: flags: create_timestamp: Fri Jan 15 18:25:13 2021 access_timestamp: Fri Jan 15 18:25:13 2021 modify_timestamp: Fri Jan 15 19:22:54 2021 > > Kind Regards,Ernesto > > On Thu, Jan 21, 2021 at 11:02 PM Gilles Mocellin > &lt;gilles.mocellin(a)nuagelibre.org&gt; wrote: > >> 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&gt; 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).