2011/1/12 Silver Salonen <silver AT ultrasoft DOT ee>:
> On Wednesday 12 January 2011 13:56:44 Hugo Letemplier wrote:
>> 2011/1/8 Silver Salonen <silver AT ultrasoft DOT ee>:
>> > On Saturday 08 January 2011 14:07:01 Hugo Letemplier wrote:
>> >> Le 6 janv. 2011 à 21:17, Silver Salonen a écrit :
>> >>
>> >> > On Thursday 06 January 2011 22:14:16 John Drescher wrote:
>> >> >>> Only one job can run on the same device. If you want another job to
>> >> >>> run into the save folder, you have to clone the device resource under
>> >> >>> some other name. Eg:
>> >> >>>
>> >> >>
>> >> >> That is wrong. Multiple jobs can write to the same tape or disk volume
>> >> >> at the same time. Most likely your problem is that a single bacula
>> >> >> storage device can only load 1 volume and thus 1 pool at a time even
>> >> >> for disk volumes.
>> >> >>
>> >> >> John
>> >> >
>> >> > Yeah, sry, I forgot that. I wonder who and why writes multiple jobs
>> >> > into the same volume with file-type volumes :)
>> >> >
>> >> > --
>> >> > Silver
>> >>
>> >> So I will need to create many pools ?
>> >> But of I use one pool for many Jobs so I will need to create many devices
>> >> ?
>> >>
>> >> Hugo
>> >
>> > Many pools you need mostly because you want your backups of different
>> > levels to be labeled differently and have different retention time for
>> > them.
>> >
>> > For file-type volumes it makes sense to use one job per volume and thus
>> > you'll need to create as many devices as many concurrent jobs you want to
>> > use.
>> >
>> > PS. In mailing listis, please post at the bottom of the thread.
>> >
>> > --
>> > Silver
>> >
>>
>> Do I need to use a virtual autochanger ? in fact I don't care about
>> what device I used per pool.
>> eg : if I have many file devices I order to access many file volumes
>> in one sd directory. I would like that bacula select automaticatly the
>> first available device in order to access the file volume.
>>
>> Here are my File devices in sd conf
>>
>> Device {
>> Name = "DataTest.0"
>> Media Type = File
>> Archive Device = /BaculaData/Test/
>> LabelMedia = yes; # lets Bacula label unlabeled media
>> Random Access = Yes;
>> AutomaticMount = yes; # when device opened, read it
>> RemovableMedia = no;
>> AlwaysOpen = Yes;
>> Maximum Volume Size = 4G
>> }
>>
>> Device {
>> Name = "DataTest.1"
>> Media Type = File
>> Archive Device = /BaculaData/Test/
>> LabelMedia = yes; # lets Bacula label unlabeled media
>> Random Access = Yes;
>> AutomaticMount = yes; # when device opened, read it
>> RemovableMedia = no;
>> AlwaysOpen = Yes;
>> Maximum Volume Size = 4G
>> }
>>
>> imagine 10 Devices named "DataTest.X"
>>
>> Here are my pools in Dir config, one named "Sauvegarde" is to make
>> regular backup on few File servers. The other is to export on a LTO
>> device as long as possible.
>>
>> Pool {
>> Name = Test
>> Storage = DataTest => My problem is here
>> Pool Type = Backup
>> Recycle = yes
>> # Bacula can automatically recycle Volumes
>> AutoPrune = yes
>> # Prune expired volumes
>> Volume Retention = 7 days # Short time
>> to make test
>> Label Format = "Bacula-Test-"
>> Maximum Volume Bytes = 4G # Limit Volume
>> size to
>> something reasonable
>> Maximum Volumes = 256 #
>> Limit number of Volumes in Pool
>> Next Pool = ArchivageLTO
>> }
>>
>> Pool {
>> #Pool pour l'archivage sur bande LTO
>> Name = ArchivageLTO
>> Storage = Tape => My problem is here
>> Pool Type = Backup
>> Label Format = "Bacula-LTO-"
>> Recycle = no
>> # Bacula can automatically recycle Volumes
>> AutoPrune = no
>> # Prune expired volumes
>> Maximum Volumes = 0
>> # unlimited number of Volumes in Pool
>> }
>>
>> => My problem is here = I can only specify 1 device .
>>
>> You said one pool per job but I will have many job with the same
>> retention time and space limit.
>> I want to backup my File servers as long as it is possible with the
>> only limit of the space on the Disk.
>>
>> I was going to make Pools in function of the kind of Data to use and
>> the "Value" of the data stored on it.
>> For eg : Financial and administrative Data of my company in a
>> different pool than the Webserver, the File Server or than the Mail
>> Server.
>>
>> My LTO pool is only the destination of a copy job, in this case this
>> is an archive and I need to maybe 20 years later so I configure it
>> with an unlimited retention time.
>>
>> Do I really need to make one pool per job ?
>
> As I have understood it, the problem will occur when you are going to rotate
> your backups (eventually you WILL do it, no?). I have separated different
> data to separate jobs (eg. configuration, /var, /home etc.) and they all have
> different retention period and/or different number of backups (eg. volumes of
> full backups). So I want to be able to rotate the backups one-by-one, not
> all-at-once, and this is also the reason I'm using one volume per job.
>
> Concerning devices - yes, you could use vchanger instead of creating many
> devices manually.
>
> --
> Silver
>
My idea is now to have one pool for each part of my Information system
ex File Servers, Database Server, Infrastructure, Mails, Laptops,
Development, Production…
For each pool I create one Device. Why would this create problem in
backup rotation ?
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