Red Hat Bugzilla – Bug 1260012
Data Tiering:Regression:New file creates still going to cold tier after attaching tier
Last modified: 2016-06-19 20:01:51 EDT
Description of problem:
while doing IOs, I attached a tier, and found that the new file creates are still going to cold tier.
Also, after some time, when the volume was idle, I did a new set of file creates, but still these file creates were still going to cold tier.
The vol was mounted on nfs.
Note: I didnt do any other file ops like read dir, ls,etc
Also see bug#1260003
[root@nag-manual-node1 glusterfs]# gluster --version
glusterfs 3.7.4 built on Sep 2 2015 18:06:07
Repository revision: git://git.gluster.com/glusterfs.git
Copyright (c) 2006-2011 Gluster Inc. <http://www.gluster.com>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GlusterFS under the terms of the GNU General Public License.
[root@nag-manual-node1 glusterfs]# rpm -qa|grep gluster
Steps to Reproduce:
1.create a regular volume
2.now mount vol and do IOs and while IOs are going on attach a tier
3.now after attach tier is complete,do create anohter set of new files
4. still the files are going to cold tier.
note: no options were changed or set after vol create.
I do not see this happening with current code, and it is something we test on a regular basis with automated tests. Lets discuss this one in scrum.
On step 2 we are attaching a tier while IO is happening. This functionality does not work yet and may (possibly) explain the observed behavior.
So I would recommend to leave this open. And revisit this bug once attach tier is working (or we decide not to allow IO while attaching a tier).
it works now