Test cluster with 2 osds, stop osd.0, if osd.1
report the pg stats during pg peering, mon will
record pg state to 'peering',then stop osd.1,
finally the pg state will stuck in 'stale+peering',
which is unexpected.
Let's wait_for_active() after stop osd.0.
Signed-off-by: huangjun <huangjun@xsky.com>
The helper gets a sequence number from the osd (or osds), and then
polls the mon until that seq is reflected there.
This is overkill in some cases, since many tests only require that the
stats be reflected on the mgr (not the mon), but waiting for it to also
reach the mon is sufficient!
Signed-off-by: Sage Weil <sage@redhat.com>
