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| From: | Alex Bligh |
| Subject: | Re: [Qemu-devel] [PATCH v3 2/2] rbd: link and load librbd dynamically |
| Date: | Fri, 21 Jun 2013 20:08:31 +0100 |
--On 21 June 2013 11:42:34 -0700 Sage Weil <address@hidden> wrote:
Has any progress been made toward a generic dynamic linking solution for block drivers? It is a conceptually simple change, but non-trivial for anyone unfamiliar with the build system. In the mean time, the inability to dynamically link librbd is continuing to cause significant pain for distro users. Would you consider merging the rbd-specific linking as an interim solution until something is generically available to qemu?
FWIW I have this implemented here: https://github.com/flexiant/qemu/commits/v1.0-rbd-add-async-flush specifically this commit: https://github.com/flexiant/qemu/commit/6fa2e9c95bdaca7c814881e27f04424fb6cc 2960 This is a backport of qemu 1.5's librbd to qemu 1.0 (which is slighly confusing) but the #pragma weak technique is basically the same. I had to use a slightly different technique to Josh's original version to get it to compile with old includes and still run with a new library, as well as vice versa. It would take me only a few minutes to bring this back as a patch for 1.5 if anyone is interested. I assumed they would not be. -- Alex Bligh
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