> -----Original Message----- > From: ceph-devel-owner@xxxxxxxxxxxxxxx [mailto:ceph-devel- > owner@xxxxxxxxxxxxxxx] On Behalf Of Chen, Xiaoxi > Sent: Friday, October 16, 2015 8:26 AM > To: Xusangdi > Cc: ceph-devel@xxxxxxxxxxxxxxx > Subject: RE: chooseleaf may cause some unnecessary pg migrations > > How did you measure "help performance" ? > > In your case , the OSD is in "down" but not "out" in osdmap > > Maybe extend the osdmaptool to support "mark osd out" could do the test? Downed OSDs are marked as out after around 5 minutes (depends on configuration). With best regards / Pozdrawiam Piotr Dałek ��.n��������+%������w��{.n����z��u���ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f