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76a67d7753
the return value is "95 Operation not supported" Signed-off-by: Jonas Jelten <jj@sft.lol>
29 lines
1.7 KiB
ReStructuredText
29 lines
1.7 KiB
ReStructuredText
=======================
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OSD class path issues
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=======================
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::
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$ rbd create rbd/test --size 100M
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2021-03-16 01:26:59.012 7fe41426f080 -1 librbd::PoolMetadata: list: failed listing metadata: (95) Operation not supported
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2021-03-16 01:26:59.012 7fe41426f080 -1 librbd::Config: apply_pool_overrides: failed to read pool config overrides: (95) Operation not supported
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2021-03-16 01:26:59.012 7fe400ff9640 -1 librbd::image::CreateRequest: 0x55d62341bb30 handle_add_image_to_directory: error adding image to directory: (95) Operation not supported
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rbd: create error: (95) Operation not supported
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After adding ``--debug-ms=1``, you can see which OSD is contacted.
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In the contacted OSD's log, you'll find the reason why this happens,
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and usually it is because the "rados classes" can't be loaded at runtime with ``dlopen``:
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::
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2021-03-16 01:26:59.013 7f6c6dff3640 10 _load_class rbd from /usr/local/lib64/rados-classes/libcls_rbd.so
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2021-03-16 01:26:59.013 7f6c6dff3640 0 _load_class could not stat class /usr/local/lib64/rados-classes/libcls_rbd.so: (2) No such file or directory
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2021-03-16 01:26:59.013 7f6c6dff3640 -1 osd.3 112 class rbd open got (2) No such file or directory
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2021-03-16 01:26:59.013 7f6c6dff3640 1 -- [...] --> [...] -- osd_op_reply(5 rbd_directory [call rbd.dir_add_image] v0'0 uv0 ondisk = -95 ((95) Operation not supported)) v8 -- 0x7f6c6800fed0 con 0x7f6cb80100c0
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This means the OSD could not find ``libcls_rbd.so``.
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You can customize the load path of these modules in ``ceph.conf`` with ``osd_class_dir``.
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By default, this is ``$libdir/rados-classes``, so when developing, you likely have to adjust the path.
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These class libraries are used for extending RADOS, see :ref:`rados-objclass-api-sdk`.
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