On Fri, Oct 24, 2014 at 8:47 AM, Sergey Nazarov wrote:
> Any update?
>
The short answer is that when the command is executed for second time,
the MDS needs to truncate the file zero length. The speed of truncate
a file is limited by the OSD speed. (creating file and write data to
the file are asy
Any update?
On Tue, Oct 21, 2014 at 3:32 PM, Sergey Nazarov wrote:
> Ouch, I think client log is missing.
> Here it goes:
> https://www.dropbox.com/s/650mjim2ldusr66/ceph-client.admin.log.gz?dl=0
>
> On Tue, Oct 21, 2014 at 3:22 PM, Sergey Nazarov wrote:
>> I enabled logging and performed same t
Ouch, I think client log is missing.
Here it goes:
https://www.dropbox.com/s/650mjim2ldusr66/ceph-client.admin.log.gz?dl=0
On Tue, Oct 21, 2014 at 3:22 PM, Sergey Nazarov wrote:
> I enabled logging and performed same tests.
> Here is the link on archive with logs, they are only from one node
> (f
I enabled logging and performed same tests.
Here is the link on archive with logs, they are only from one node
(from the node where active MDS was sitting):
https://www.dropbox.com/s/80axovtoofesx5e/logs.tar.gz?dl=0
Rados bench results:
# rados bench -p test 10 write
Maintaining 16 concurrent wr
Can you enable debugging on the client ("debug ms = 1", "debug client
= 20") and mds ("debug ms = 1", "debug mds = 20"), run this test
again, and post them somewhere for me to look at?
While you're at it, can you try rados bench and see what sort of
results you get?
-Greg
Software Engineer #42 @ h
It is CephFS mounted via ceph-fuse.
I am getting the same results not depending on how many other clients
are having this fs mounted and their activity.
Cluster is working on Debian Wheezy, kernel 3.2.0-4-amd64.
On Tue, Oct 21, 2014 at 1:44 PM, Gregory Farnum wrote:
> Are these tests conducted us
Are these tests conducted using a local fs on RBD, or using CephFS?
If CephFS, do you have multiple clients mounting the FS, and what are
they doing? What client (kernel or ceph-fuse)?
-Greg
Software Engineer #42 @ http://inktank.com | http://ceph.com
On Tue, Oct 21, 2014 at 9:05 AM, Sergey Nazar
Hi
I just built a new cluster using this quickstart instructions:
http://ceph.com/docs/master/start/
And here is what I am seeing:
# time for i in {1..10}; do echo $i > $i.txt ; done
real 0m0.081s
user 0m0.000s
sys 0m0.004s
And if I try to repeat the same command (when files already created):
