There is a journal_bytes counter for the OSD, or the journal_full counter
will show if you have ever filled the journal.

 

From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
David Turner
Sent: 20 June 2016 17:02
To: EP Komarla <ep.koma...@flextronics.com>; ceph-users@lists.ceph.com
Subject: Re: [ceph-users] Ceph OSD journal utilization

 

If you want to watch what a disk is doing while you watch it, use iostat on
the journal device.  If you want to see it's patterns at all times of the
day, use sar.  Neither of these are ceph specific commands, just Linux tools
that can watch your disk utilization, speeds, etc (among other things.  Both
tools are well documented and easy to use.

  _____  

From: ceph-users [ceph-users-boun...@lists.ceph.com] on behalf of EP Komarla
[ep.koma...@flextronics.com]
Sent: Friday, June 17, 2016 5:13 PM
To: ceph-users@lists.ceph.com <mailto:ceph-users@lists.ceph.com> 
Subject: [ceph-users] Ceph OSD journal utilization

Hi,

 

I am looking for a way to monitor the utilization of OSD journals - by
observing the utilization pattern over time, I can determine if I have over
provisioned them or not. Is there a way to do this?  

 

When I googled on this topic, I saw one similar request about 4 years back.
I am wondering if there is some traction on this topic since then.

 

Thanks a lot.

 

- epk


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