On 09/02/2014 06:31 AM, Francesco Romani wrote:
Management software, want to be able to allocate disk space on demand.
s/software, want/software wants/
To support this, they need keep track of the space occupation of the block device.
(what's more, during a blockcopy or active blockcommit, they also need to track space allocation of secondary files - but we can add that support later)
This information is reported by qemu as part of block stats.
This patch extend the block information in the bulk stats with
s/extend/extends/
the allocation information, in order to save a call to the QEMU monitor. --- src/libvirt.c | 1 + src/qemu/qemu_driver.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+)
diff --git a/src/libvirt.c b/src/libvirt.c index cabfb91..81d71be 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -21591,6 +21591,7 @@ virConnectGetDomainCapabilities(virConnectPtr conn, * "block.<num>.wr.times" - total time (ns) spent on writes. * "block.<num>.fl.reqs" - total flush requests * "block.<num>.fl.times" - total time (ns) spent on cache flushing + * "block.<num>.allocation" - offset of the highest written sector.
Missing type.
* * Using 0 for @stats returns all stats groups supported by the given * hypervisor. diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 977e8c7..3fb54db 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -17554,6 +17554,18 @@ do { \ goto cleanup; \ } while (0)
+#define QEMU_ADD_BLOCK_PARAM_ULL(RECORD, MAXPARAMS, NUM, NAME, VALUE) \ +do { \ + char param_name[NAME_MAX]; \
Oversized. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org