[libvirt] [PATCH 3/3] qemu: bulk stats: Don't access possibly blocked storage

Jiri Denemark jdenemar at redhat.com
Thu May 19 12:40:00 UTC 2016

On Wed, May 18, 2016 at 15:14:29 +0200, Peter Krempa wrote:
> When libvirt is gathering stats for block devices in the bulk stats API
> it would use the fallback code that accesses the files directly in
> libvirt both if the VM was offline and if qemu didn't return the stats
> at all.

It took me a while to understand what you wanted to say here. It would
be nice if you could reword it :-)

> If qemu is not cooperating due to being stuck on an inaccessible NFS
> share we would then attempt to read the files and get stuck too with
> the VM object locked. All other APIs would get eventually get stuck

s/ get / /

> waiting on the VM lock.
> Avoid this problem by skipping the block stats if the VM is online but
> the monitor did not provide any stats.
> Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1337073
> ---
>  src/qemu/qemu_driver.c | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)



More information about the libvir-list mailing list