Certain operations with RBD can return the C errno EEXIST. Applications
using go-ceph benefit from easily detecting this error.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
Some versions of librbd provide the rbd_clone4 function, and others do
not. Squid will have the function backported in the 1st update, the
initial release of Squid does not have it. This makes checking for the
function based on the named Ceph version impractical.
With the new dlsym.LookupSymbol() function, it is now possible to check
the availability of rbd_clone4 during runtime. If the symbol is not
found ErrNotImplemented is returned, which can be used to detect the
unavailability of the function.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
This function is added, along with required return types and some helper
functions, to support fetching the global mirroring status component
that makes up a major part of `rbd mirror image status` command's
output.
Signed-off-by: John Mulligan <jmulligan@redhat.com>
In order to avoid external dependencies on implementation details,
this change replaces RBDError with the unexported rbdError. In case
some application really needs access to the integer value, it can use
the pattern
var errno interface{ Errno() int }
if errors.As(err, errno) { ... errno.Errno() ... }
Signed-off-by: Sven Anderson <sven@redhat.com>
rbd_namespace_create() function creates namespace for a given iocontext.
rbd_namespace_exists() function checks whether the given namespace exists or not.
rbd_namespace_remove() function removes the given namespace.
Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>
Niels de Vos
John Mulligan
Sven Anderson
Mudit Agarwal
root