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Ralf wrote:
> Falk Sauer <falk <at> hb-fein.de> writes:
>
>> Hi Ralf,
>>
>> On Tuesday 24 April 2007 writes Ralf:
>>> we are using Bacula 2.0.2 on Suse Linux with the Tandberg tape drive DLT-V4
>>> and DLTtape VS1 cartridges. Unfortunately it´s not clear to me which "media
>>> type" I should use to have the highest effort. Concerning the manual the
>>> cartridge can hold 160G uncompressed / 320G compressed on DLT-V4 drives but
>>> the cartridge is always marked full at approx. 35G.
>>>
>>> Which media type should I use?
>> The media-type statement in conf is afair only a description/name for same
>> medium-types/class.
>> If you have a DLT-VS1 Tape medium, name the media type DLT-VS1 and your V4
>> name can DLT-V4. This is only a Name for _same_ media types thats going on a
>> (one or more) special Storage. If you use 2 media types in one Tape drive
>> use
>> one media-type for them. Media Type has imho no side effects to any max
>> volume size params. That's all you can also find in the documentation.
>>
>> Your Problem has imho a other cause. Have you defined any Volume size?
>> remove
>> it for testing.
>> Have you initially rewinded your tape and a
>> mt weof -f /dev/nst0
>> making before you labeled the medium?
>> Have you a new Tape for testing or a old one, often used with errors?
>> Can you write more uncompressed bytes with tar or cpio to this tape?
>>
>> regards
>> Falk
>>
>
> Hi Falk,
>
> thanks for your reply.
>
> I´ve always use new sealed cartridges of Tandberg. But in the initial setup
> process I have not rewind the mediums with "mt weof -f /dev/nst0". Is this
> also
> necassary with new cartridges?
>
> Here an example of my problem:
> A weekly marked cartridge was full at 6GB. I have delete the catalog in Bacula
> and after I delete the content of the cartridge with the command "mt -f
> /dev/st0
> erase". Then I label the medium in Bacula again and wrote data to it. Now the
> cartridge is market full at 12,5GB. Perhaps I have a lack of tape geometry?
Keep in mind doing a weof does NOT rewind the tape -- AFAIK, only a
rewind does this. As for whether it's necessary? I somewhat doubt it --
that said, I do it anyway. In this case, at least giving it a whack
would tell you whether or not that is at all related to this problem.
- --
---- _ _ _ _ ___ _ _ _
|Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Systems Programmer III
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