Hi,
When using librbd, one usually just gets a simple error code from RBD methods
if something goes wrong, and those sometime have me guessing exactly what they
could mean in a specific situation.
While perusing librbd/internal.cc, I noticed that many of the methods in the
background will produce more detailed error messages, like this line from
snap_protect():
lderr(ictx->cct) << "snap_protect: image must support layering"
<< dendl;
How do I access those more detailed error messages?
Guido
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