Re: [libvirt PATCH v3 07/18] qemu: use file cache for nbdkit caps

Add the virFileCache implementation for nbdkit capabilities to the qemu driver. This allows us to determine whether nbdkit is installed and which plugins are supported. it also has persistent caching and the capabilities are re-queried whenever something changes. Signed-off-by: Jonathon Jongsma <jjongsma(a)redhat.com&gt; --- src/qemu/qemu_conf.h | 3 +++ src/qemu/qemu_driver.c | 4 ++++ 2 files changed, 7 insertions(+) diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h index a39510b0b1..95c05e6888 100644 --- a/src/qemu/qemu_conf.h +++ b/src/qemu/qemu_conf.h @@ -320,6 +320,9 @@ struct _virQEMUDriver { /* Immutable pointer, self-locking APIs */ virHashAtomic *migrationErrors; + + /* Immutable pointer, self-locking APIs */ + virFileCache *nbdkitCapsCache; }; virQEMUDriverConfig *virQEMUDriverConfigNew(bool privileged, diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 59a3b37b98..d42f3c2d2a 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -833,6 +833,9 @@ qemuStateInitialize(bool privileged, defsecmodel))) goto error; + /* find whether nbdkit is available and query its capabilities */