: Vengurlekar, Tushar V (USD-SWD) [mailto:tushar.vengurle...@hp.com]
Sent: Friday, September 13, 2013 1:02 AM
To: Zhou, Yuan; openstack@lists.openstack.org
Subject: RE: Regarding replicator behavior with single replica
Hi Yuan,
All my devices are up. Will replicator try to move object even though I
Hi Tushar,
One possible reason is that one of your devices is unavailable when you're
uploading ?
This makes some of objects are uploaded to handoff devices actually and
obj-replicator will try to move them back to primary devices.
Regards,
-Yuan
-Original Message-
From: Vengurlekar
Hi Pang,
Would you have a check on the iostat data of your storage nodes? There seems
like to be another bottleneck in the disks.
With 3k tps, assuming there's no bottleneck in the network and CPU part, the
IOPS for each disk would be:
3000 * 3(3-replicas) / 50(# of disks) = 180
That's really
Hi Klaus,
We've done some tests on replication in Swift before. Mostly the bottleneck is
in the internal network bandwidth between your storage nodes.
Also please have a check on your rsyncd.conf to make sure the value of 'max
connections' is not too small.
Hope this can help.
Regards, -yuanz
S
