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Re: [libvirt] [PATCH] daemon: Do not lose storage driver

On 06/05/2012 04:12 AM, Osier Yang wrote:
> Per WITH_STORAGE_DIR is always defined as long as libvirtd is built,


> it's fine to use it as the condition.
> ---
>  daemon/libvirtd.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c
> index c74cd43..7db02e3 100644
> --- a/daemon/libvirtd.c
> +++ b/daemon/libvirtd.c
> @@ -366,7 +366,7 @@ static void daemonInitialize(void)
>  # ifdef WITH_NETWORK
>      virDriverLoadModule("network");
>  # endif
> -# ifdef WITH_STORAGE
>      virDriverLoadModule("storage");
>  # endif

Incomplete.  Grepping the sources for uses of 'WITH_STORAGE*', I see:

tests/virdrivermoduletest.c:#ifdef WITH_STORAGE

as another instance of an undefined macro usage.

Also, configure.ac _does_ allow you to disable WITH_STORAGE_DIR but
still build libvirtd.  I think the real solution is to add something
like this to configure.ac:

for tmp in dir fd lvm iscsi scsi mpath rbd disk; do
    if eval test \$with_storage_$tmp = yes; then
        AC_DEFINE([WITH_STORAGE], [1],
          [Define to 1 if at least one storage backend is in use])

At which point, WITH_STORAGE will really be what we want to know that at
least one storage driver was built and not explicitly disabled by
configure options.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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