Re: [MooseFS-Users] Mounted disk size varies, huge disk size drops, high iowait

[Edik M. <edi...@tu...>]

Hi Piotr,

I use 2.0.73-1, I know that 2.0.72 is the stable version, but the apt-get
install that version on mu chunk server, and mrs clients.
On MoosFS I use 2.0.50-1(yet), going to update to 2.0.7X, or maybe 3.0.X(if
there is a good document on that).
Reexporting is not my idea, I have what I have, do not know much about
that, the fact is that we had not problems until two or so months ago, then
I have installed zabbix agent and it instantly alarmed a high iowait, see
the graphs please.


​

I think this is not normal, I know that two most probabel reasons are the
network issues and the faulty storage. Here is how the network load
correlates with the iowait on all four chunk servers

​  And just yesterday friend of mine noticed this

​
And when I started to monitor the storage size of mrs mount on mfsclient, I
have found this

​the devising started somewhere around 6.00 am, at night it was a
horizontal line, yesterday it increased to the maximal number for few
hours, our stuff starts to work at 10:00 am.


On Thu, Aug 20, 2015 at 2:25 PM, Piotr Robert Konopelko <
pio...@mo...> wrote:

> Hello Edik,
>
> Which version of MooseFS do you use?
> Is it 1.6, 2.0 or 3.0?
>
> Why do you re-share MFS via NFS? Do you *really* need it?
> We know, that performance is poor when such operation (re-share via NFS)
> is done.
>
> Also, your charts are very compressed, it is hard to see anything in
> legend.
> Could you post a bigger image?
>
>
> Best regards,
>
> --
> Piotr Robert Konopelko
> *MooseFS Technical Support Engineer* | moosefs.com
>
> On 20 Aug 2015, at 11:37 am, Edik Mkoyan <edi...@tu...> wrote:
>
> FYI
>
> http://superuser.com/questions/960027/disk-size-varies-moosefs
>
> Thanks
>
> --
> --------
> Best,
> Edik.
>
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-- 
--------
Best,
Edik.

-- 
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Armenia. www.tumo.org