From: Andrew Thompson <andrewkt@aktzero.com>
To: Xiaopong Tran <xiaopong.tran@gmail.com>
Cc: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Re: Very unbalanced storage
Date: Fri, 31 Aug 2012 11:00:09 -0400 [thread overview]
Message-ID: <5040D179.5000008@aktzero.com> (raw)
In-Reply-To: <50409BDC.5010006@gmail.com>
On 8/31/2012 7:11 AM, Xiaopong Tran wrote:
> Hi,
>
> Ceph storage on each disk in the cluster is very unbalanced. On each
> node, the data seems to go to one or two disks, while other disks
> are almost empty.
>
> I can't find anything wrong from the crush map, it's just the
> default for now. Attached is the crush map.
Have you been reweight-ing osds? I went round and round with my cluster
a few days ago reloading different crush maps only to find that it
re-injecting a crush map didn't seem to overwrite reweights.
Take a look at `ceph osd tree` to see if the reweight column matches the
weight column.
Note: I'm new at this. This is my experience only, with 0.48.1, and may
not be entirely correct.
--
Andrew Thompson
http://aktzero.com/
next prev parent reply other threads:[~2012-08-31 15:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-31 11:11 Very unbalanced storage Xiaopong Tran
2012-08-31 15:00 ` Andrew Thompson [this message]
2012-08-31 16:10 ` Sage Weil
2012-08-31 16:24 ` Andrew Thompson
2012-08-31 16:39 ` Gregory Farnum
2012-09-01 2:33 ` Xiaopong Tran
2012-09-01 3:07 ` Sage Weil
2012-08-31 16:43 ` Sage Weil
2012-08-31 16:05 ` Sage Weil
2012-09-01 2:52 ` Xiaopong Tran
2012-09-01 3:05 ` Sage Weil
2012-09-01 3:15 ` Xiaopong Tran
2012-09-01 6:58 ` Andrew Thompson
2012-09-04 15:59 ` Tommi Virtanen
2012-09-04 16:19 ` Andrew Thompson
2012-09-04 16:43 ` Sage Weil
2012-09-04 16:48 ` Tommi Virtanen
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