Re: [RFC PATCH] target: detect read-only from underlying iblock device

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On Wed, 6 Dec 2017 04:33:16 +0000, Bart Van Assche wrote:

> Although the patch itself looks fine to me: do we really need this kind of
> functionality in the kernel? Is it possible to implement the same functionality
> in user space?

Thanks for the feedback, Bart and Johannes. This functionality could
be handled in user-space, but having the error reported when the
backstore is enabled, rather than when the backstore->control node is
setup makes it less than intuitive for targetcli, etc.
Having targetcli call ioctl(BLKROGET) prior to issuing the
backstore->control I/O would probably be a cleaner user-space option.

Cheers, David
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