Re: [Bacula-users] Write ordering?

2010-02-11 Thread Richard Scobie
Phil Stracchino wrote:

> If that's a backup of a single host, that sounds ...  bizarre.  The only
> explanation I can think of is that there's a directory tree sitting in
> somewhere between those seven files in the directory, that contains a
> vast quantity of data.  If you look at your filesystem, could this be
> the case?

My initial post was inaccurate.

I restored a single directory which contained 5 files: 4 x 67kB, 1 x 
1.9GB - no directories.

The report states that that 7 files were expected and 7 restored, so I 
guess this includes a couple of parent directories.

Regards,

Richard

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Re: [Bacula-users] Write ordering?

2010-02-11 Thread Phil Stracchino
On 02/11/10 14:04, Richard Scobie wrote:
> I am just testing bacula prior to deployment and restored 7 files from 
> one directory from a backup of 3TB.
> 
> This backup is stored on 3 LTO4 volumes and in order to restore these 7 
> files, it read from the first and third LTO4 volumes, when I would have 
> expected them to all be adjacent to one another.
> 
> Is this a deliberate policy to spread data across tapes or a reflection 
> of the FS layout of the data being backed up?

If that's a backup of a single host, that sounds ...  bizarre.  The only
explanation I can think of is that there's a directory tree sitting in
somewhere between those seven files in the directory, that contains a
vast quantity of data.  If you look at your filesystem, could this be
the case?


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Re: [Bacula-users] Write ordering?

2010-02-11 Thread John Drescher
> This backup is stored on 3 LTO4 volumes and in order to restore these 7
> files, it read from the first and third LTO4 volumes, when I would have
> expected them to all be adjacent to one another.
>
> Is this a deliberate policy to spread data across tapes or a reflection
> of the FS layout of the data being backed up?
>

There is no deliberate policy of spreading data across multiple tapes.
It is more a function of FS order and concurrent jobs.

John

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[Bacula-users] Write ordering?

2010-02-11 Thread Richard Scobie
I am just testing bacula prior to deployment and restored 7 files from 
one directory from a backup of 3TB.

This backup is stored on 3 LTO4 volumes and in order to restore these 7 
files, it read from the first and third LTO4 volumes, when I would have 
expected them to all be adjacent to one another.

Is this a deliberate policy to spread data across tapes or a reflection 
of the FS layout of the data being backed up?

Regards,

Richard

--
SOLARIS 10 is the OS for Data Centers - provides features such as DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
http://p.sf.net/sfu/solaris-dev2dev
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