Bacula-users

Re: [Bacula-users] Should I use data spooling when writing to nfs mounted storage?

2011-03-03 12:08:22
Subject: Re: [Bacula-users] Should I use data spooling when writing to nfs mounted storage?
From: Phil Stracchino <alaric AT metrocast DOT net>
To: bacula-users AT lists.sourceforge DOT net
Date: Thu, 03 Mar 2011 12:05:44 -0500
On 03/03/11 09:52, Fabio Napoleoni - ZENIT wrote:
> 
> Il giorno 03/mar/2011, alle ore 04.52, Fabio Napoleoni - ZENIT ha scritto:
> 
>> I have my director using an external raid device which exports its 
>> filesystem with nfs protocol as storage. I just ended my bacula 
>> configuration and just launched my first remote job. I have this in the 
>> report
>>
>> JobId 3: Job write elapsed time = 00:14:23, Transfer rate = 1.182 M 
>> Bytes/second
>>
>> which seems a little poor to me (our network is currently on a 100M switch, 
>> we're planning to upgrade with something better in the near future). 
>> Currently data flows from bacula-fd on client to bacula-sd on bacula server 
>> and then the storage daemon writes data on a volume mounted in an nfs 
>> partition, so data goes on the wire at the same time.
>>
>> Is advisable to enable data spooling in the storage daemon in this situation?
> 
> I made a try with this results
> 
> JobId 7: Spooling data ...
> JobId 7: Job write elapsed time = 00:13:07, Transfer rate = 1.295 M 
> Bytes/second
> JobId 7: Committing spooled data to Volume "FullVolume-0004". Despooling 
> 1,021,072,888 bytes ...
> JobId 7: Despooling elapsed time = 00:02:19, Transfer rate = 7.345 M 
> Bytes/second
> JobId 7: Sending spooled attrs to the Director. Despooling 6,816,214 bytes ...
> 
> There is only a little improvement of performances.
> 
> So I'm asking you what is the transfer rate in your jobs? These rates are 
> normal or are they slow compared to yours?

Is there any way you can run your SD directly on the storage device,
instead of the SD writing to storage mounted over NFS?


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric AT caerllewys DOT net   alaric AT metrocast DOT net   phil AT 
co.ordinate DOT org
  Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
                 It's not the years, it's the mileage.

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