On Fri, 17 Oct 2014, Joaquim Rocha wrote:
> Hi,
>
> I need to get a list of xattrs from one object (so I'm batching them in one
> ObjectReadOperation) but I don't know in advance if all of those xattrs exist.
>
> I was expecting to figure out the ones that don't exist from the return code
> of each getxattr call but I have however noticed that as soon one nonexistent
> xattr is processed, its return code gets correctly set to -ENODATA but the
> remaining xattrs are never checked. And what is worse, the remaining getxattr
> op's return codes get assigned to 0.
>
> I am attaching a small test case I've quickly written that proves the case. (I
> am using Ceph 0.80.5)
>
> Could you confirm that this is not the intended behavior (that all read op's
> calls should be processed)?
This is by design.
What you want is the
void set_op_flags(ObjectOperationFlags flags);
method on the ObjectOperation, and the OP_FAILOK flag. That will set a
bit on the last op (getxattr) you added that will make processing continue
even if it got an error. Then you'll get the behavior you were
looking for.
sage
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