>>>>> On Thu, 01 May 2008 07:42:19 +0200, Peter Koch said:
> 
> Hi Martin,
> 
> Thanks, thats it!
> LVM adds a symbolic for /dev/mapper/... Devices like this:
> 
> [...]
> 01-May 06:25 xen01-dir JobId 144: BeforeJob:   Logical volume 
> "bacula-snap_xen01_domU1" created
> 01-May 06:25 xen01-dir JobId 144: BeforeJob:   File: 
> `/dev/system/bacula-snap_xen01_domU1' -> 
> `/dev/mapper/system-bacula--snap_xen01_domU1'
> 01-May 06:25 xen01-dir JobId 144: BeforeJob:   Size: 43               Blocks: 
> 0          IO Block: 4096   symbolic link
> 01-May 06:25 xen01-dir JobId 144: BeforeJob: Device: dh/13d   Inode: 32416    
>    Links: 1
> 01-May 06:25 xen01-dir JobId 144: BeforeJob: Access: (0777/lrwxrwxrwx)  Uid: 
> (    0/    root)   Gid: (    0/    root)
> 01-May 06:25 xen01-dir JobId 144: BeforeJob: Access: 2008-05-01 
> 06:25:05.971870511 +0200 
> 01-May 06:25 xen01-dir JobId 144: BeforeJob: Modify: 2008-05-01 
> 06:25:05.971870511 +0200 
> 01-May 06:25 xen01-dir JobId 144: BeforeJob: Change: 2008-05-01 
> 06:25:05.971870511 +0200 
> [...]
> 
> If i use the /dev/mapper Device Files Bacula makes the RAW Device Backup, 
> thats what i want!
> 
> Eventually the Support of LVM Symbolic links (or links pointing to a Block
> Device) can be an Enhancement for bacula for better usage or transparancy?!

It is tricky.  The current support for raw devices is a bit of hack, because
it only works when the device is referenced directly by the fileset
definition.  It is quite common to find symlinks to devices, so detecting
these as raw devices for backup might be a little dangerous :-)


> It makes sence, to add this fact in the Documentation ....

I've reported it as a doc bug.

__Martin


> 
> Regards,
> Peter
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Martin Simmons [mailto:martin AT lispworks DOT com] 
> > Gesendet: Mittwoch, 30. April 2008 21:37
> > An: pkoch4710 AT gmx DOT de
> > Cc: bacula-users AT lists.sourceforge DOT net; peter AT peterkoch DOT de
> > Betreff: Re: [Bacula-users] backup of raw Device (LVM Snapshot)
> > 
> > >>>>> On Sun, 27 Apr 2008 12:49:46 +0200, Peter Koch said:
> > > 
> > > Hallo there,
> > > 
> > > i want to backup a RAW-Device (/dev/system/bacula-snap_blabla), but 
> > > the Backup contains only some Bytes (i think it´s only the 
> > device File itself).
> > > 
> > > Have someone an idea?
> > > 
> > > That´s the principle Schema:
> > > 
> > > 1) RunBefore -> Create Snapshot-Device /dev/system/blabla -> 
> > > /dev/system/bacula-snap/blabla
> > > 2) Backup -> FileSet {File = /dev/system/bacula-snap/blabla} with 
> > > option sparse=yes
> > > 3) RunAfter -> Delete Snapshot Device
> > 
> > You could try adding
> > 
> > /usr/bin/stat /dev/system/bacula-snap_blabla
> > 
> > to the BeforeJob script, to see what it shows about that 
> > device.  Bacula expects raw devices to be block devices.
> > 
> > __Martin
> > 
> 
> -- 
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> 

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