Re: [Bacula-users] Virtual Disk Autochager
> > individual volumes / file system mount points to Bacula, you *can't* > > tell Bacula to put each "file tape" on a different mount point and/or > > sub-directory. > > This *can* be accomplished by using symbolic linking. In an application that Ahh good point. Moreover, with RAID5, unless you're using Veritas VFS or maybe FreeBSD VINUM/Linux LFS, you can't grow the underlying file system size without a complete teardown and rebuild. You could use growfs(8) on a FreeBSD vinum (RAID0, RAID5) composed of individual disks, but I think for this application individual disk mount points are ideal. ~BAS smime.p7s Description: S/MIME cryptographic signature
Re: [Bacula-users] Virtual Disk Autochager
On Monday 20 March 2006 21:18, Brian A. Seklecki wrote:
> RAID5 is best with a hot spare volume, otherwise...what's the advantage
> that justifies increased write overhead?
>
> Besides, does the file system you're backing up to require any more
> redundancy from a disk technology standpoint than you might expect out
> of the life expectancy of a single DLT tape?
>
> Consider this, if you present these individual disks as 250? 300? gig
> individual volumes / file system mount points to Bacula, you *can't*
> tell Bacula to put each "file tape" on a different mount point and/or
> sub-directory.
This *can* be accomplished by using symbolic linking. In an application that
I maintain, Bacula has one Storage device resource defined, and it uses
volumes spread over two different filesystems by simply symlinking them.
This is described briefly in the manual.
>
> I've discussed this in the past and what that would require is the
> concept of a "File Storage Directory Prefix", i.e:
>
> /dev/da0s1a /storage/bacula/Daily0
> /dev/da1s1a /storage/bacula/Daily1
> /dev/da2s1a /storage/bacula/Daily2
>
> ~BAS
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Re: [Bacula-users] Virtual Disk Autochager
RAID5 is best with a hot spare volume, otherwise...what's the advantage that justifies increased write overhead? Besides, does the file system you're backing up to require any more redundancy from a disk technology standpoint than you might expect out of the life expectancy of a single DLT tape? Consider this, if you present these individual disks as 250? 300? gig individual volumes / file system mount points to Bacula, you *can't* tell Bacula to put each "file tape" on a different mount point and/or sub-directory. I've discussed this in the past and what that would require is the concept of a "File Storage Directory Prefix", i.e: /dev/da0s1a /storage/bacula/Daily0 /dev/da1s1a /storage/bacula/Daily1 /dev/da2s1a /storage/bacula/Daily2 ~BAS smime.p7s Description: S/MIME cryptographic signature
