Re: [PATCH] Make the backing-store modules shared objects that are loaded at runtime

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It may seem weird to compile, but it *should* be enough to add package
'librbd1' (which will also pull in librados2) to allow the build with
CEPH_RBD enabled.

Of course I really meant to say "librbd-dev (which pulls in librados-dev, librbd1, and librados2)". I've set up a VM and verified those are sufficient at least for Ubuntu Quantal.

This time I saved the diffs too, which are simple:

diff --git a/usr/Makefile b/usr/Makefile
index 5c76f43..1199802 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -14,7 +14,7 @@ TGTD_OBJS += $(addprefix iscsi/, conn.o param.o session.o \
                isns.o)

 ifneq ($(CEPH_RBD),)
-BS_OBJS += bs_rdb.so
+BS_OBJS += bs_rbd.so
 endif

ifneq ($(shell test -e /usr/include/sys/eventfd.h && test -e /usr/include/libai
@@ -90,8 +90,8 @@ tgtimg: $(TGTIMG_OBJS)
 bs_aio.so: bs_aio.c
        $(CC) -shared $(CFLAGS) bs_aio.c -o bs_aio.so -laio

-bs_rdb.so: bs_rdb.c
-       $(CC) -shared $(CFLAGS) bs_rdb.c -o bs_rdb.so -lrados -lrbd
+bs_rbd.so: bs_rbd.c
+       $(CC) -shared $(CFLAGS) bs_rbd.c -o bs_rbd.so -lrados -lrbd

 .PHONY: install
 install: $(PROGRAMS)
diff --git a/usr/bs_rbd.c b/usr/bs_rbd.c
index b09090b..f1dd77d 100644
--- a/usr/bs_rbd.c
+++ b/usr/bs_rbd.c
@@ -529,7 +529,7 @@ static struct backingstore_template rbd_bst = {
        .bs_oflags_supported    = O_SYNC | O_DIRECT,
 };

-static __attribute__((constructor)) void bs_rbd_constructor(void)
+void register_bs_module(void)
 {
        register_backingstore_template(&rbd_bst);
 }
--
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