Ralf Gross wrote:
> Dan Langille schrieb:
>> On 30 Sep 2007 at 11:44, Ralf Gross wrote:
>>
>>> Kern Sibbald schrieb:
>>>> On Sunday 30 September 2007 11:05, Ralf Gross wrote:
[snip]
>>>>> This is what I'm thinking of:
>>>>>
>>>>> 1. spooling to file1
>>>>> 2. spooling to file2 and despooling the data from file1 to tape
>>>>>
>>>>> ...and so on. This will save time where the tape is idle because
>>>>> the job is spooling data.
>>>>>
>>>>> If spooling is much faster than despooling to tape and all 4
>>>>> spoolfiles are in use, the job just waits until the next (first)
>>>>> spoolfile can be used again.
[snip]
>>>> The bottom line is that this is a project that is worth while, but
>>>> IMO the priority is much lower than a number of the other projects
>>>> which are critical to enterprise acceptance of Bacula. However, if
>>>> someone would like to work on this we would be happy to provide the
>>>> appropriate guidance to ensure that any patch developed would be
>>>> accepted.
>>> Ok, then it will be worth a feature request, even if it won't be on
>>> top of the projects list. Unfortunately I won't be the one that
>>> implements that feature, my C skills are not adequate for a project of
>>> that size.
>> Could not a similar result be gained through the use of multiple
>> Storage Daemon on the same box? Or multiple storage devices, each
>> spooling to their own location, on the same box?
>
> Hm, there will be one storage device (autochanger with 2 LTO-4 drives)
> attached to the server. I've no idea how to configure that or how this
> could work. I'll have a look at the manual, maybe I find something
> useful.
I think the core of this issue, setting aside implementation details for
the moment, reduces to the following question:
"Is there a way to implement spooling such that Bacula effectively has a
circular spool buffer which can be written at the head and read from the
tail at the same time?"
--
Phil Stracchino CDK#2
Renaissance Man, Unix ronin, Perl hacker, Free Stater
[EMAIL PROTECTED] [EMAIL PROTECTED]
Landline: 603-429-0220 Mobile: 603-320-5438
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