Hi, Can you run "ceph osd pool get <<your_ec_pool_here>> allow_ec_overwrites"? What is the output of that? Thank you, Bogdan Velica On Fri, Sep 13, 2024 at 8:46 PM <andre@xxxxxxxxxx> wrote: > I have a Ceph instance I'm wherein I'm trying to use erasure coding with > RBD (and libvirt). I've followed > > https://docs.ceph.com/en/latest/rados/operations/erasure-code/#erasure-coding-with-overwrites > and enabled overwrites so that RBD can be used. In doing so, I've set > the data_pool to the erasure coded pool, with set to the replicated > pool. > > I have the following in ceph.conf: > > rbd_default_data_pool = libvirt-pool-ec > > Here's an rbd info on the image I've created (notice the "data_pool" > config): > > rbd image 'xxxxxxx': > size 500 GiB in 128000 objects > order 22 (4 MiB objects) > snapshot_count: 0 > id: 7e37e442592b > data_pool: libvirt-pool-ec > block_name_prefix: rbd_data.6.7e37e442592b > format: 2 > features: layering, exclusive-lock, object-map, fast-diff, > deep-flatten, data-pool > op_features: > flags: > create_timestamp: Fri Sep 13 16:34:06 2024 > access_timestamp: Fri Sep 13 16:34:06 2024 > modify_timestamp: Fri Sep 13 16:34:06 2024 > The problem, when I attach this rbd image to a VM, I cannot write to it > at all, I get an I/O error. But, when I create and rbd image without the > "rbd_default_data_pool = libvirt-pool-ec" setting, I can write fine. > > Wanted to see if anyone has any ideas, maybe I'm missing something > simple. Thanks in advance! > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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