Bacula-users

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

2011-03-03 18:15:09
Subject: Re: [Bacula-users] Should I use data spooling when writing to nfs mounted storage?
From: John Drescher <drescherjm AT gmail DOT com>
To: Sean Clark <smclark AT tamu DOT edu>
Date: Thu, 3 Mar 2011 18:12:33 -0500
On Thu, Mar 3, 2011 at 5:57 PM, Sean Clark <smclark AT tamu DOT edu> wrote:
> On 03/03/2011 03:21 PM, John Drescher wrote:
>> On Thu, Mar 3, 2011 at 4:11 PM, Fabio Napoleoni - ZENIT <fabio AT zenit DOT 
>> org> wrote:
> [...]
>>> So the poor throughput is given by software compression. I don't know what 
>>> to choose in the speed vs space tradeoff. Ideally the best option could be 
>>> compression on the storage director (it has more powerful hardware than 
>>> this client) but I think that bacula currently doesn't support this feature.
>>>
>> You could do that with filesystem compression. There are a few options
>> for that. Although I admit none of them are in the mainline kernel.
>>
>> John
> Well, depending on what you consider "mainline".  I'm currently
> experimenting with btrfs with filesystem compression.  As of 2.6.38,
> this is available as both gzip/zlib and LZO.  I am, daringly enough,
> experimenting with the 2.6.38 release candidates and LZO compression for
> a storage daemon on USB external disk volumes.  It seems to work so far,
> but I've only been using it for a week or so and haven't had a chance to
> do any extensive checks.
>
That was one of the choices. btrfs is still considered highly
experimental at this point.

John

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