Large filesystems help/ideas

Julien Cigar jcigar at ulb.ac.be
Wed May 21 14:01:49 UTC 2008


If you only have FreeBSD installed on the box or if you don't need
slices/partitions you can just do newfs /dev/xxx (dedicate).

vinum should not be used on 6.x and above, gvinum (GEOM + vinum)
replaced it but I'm not sure if it's still actively
supported/developped .. (?)

Also, take a look at gconcat and unionfs.

On Wed, 2008-05-21 at 15:24 +0200, Matias Surdi wrote:
> As far as I understand from the following sentence taken from the link 
> you are pointing and the text following it:
> 
> "...Many systems don't require an MBR or GPT, and even PCs don't require 
> it if booting and inter-operating with other OS's is not required. The 
> next limit that comes in, though, is with the BSD disklabel..."
> 
> I understand that I could have up to 8 slices of 2 Tb, with partitions 
> (disklabel ones) inside each slice with up to 2Tb.
> 
> Is that correct?
> 
> What do you think about using this scheme and then join all them with 
> vinum on a software raid-0 array?
> 
> Thanks a lot for your time and help.
> 
> 
> 
> 
> Julien Cigar escribió:
> > You cannot use fdisk slices/partitions with disks over 2TB. For those
> > GPT should be used. More info is available from here :
> > http://www.freebsd.org/projects/bigdisk
> > 
> > On Wed, 2008-05-21 at 13:57 +0200, Matias Surdi wrote:
> >> Hi,
> >> I'm implementing a backup solution at work.We've bought a x86 server 
> >> with two hardware raid 5 with for a total storage capacity of about 7Tb.
> >>
> >> For the software we are using for backups, the ideal scenario would be 
> >> to have just one "big disk" so that no space problems would appear.
> >>
> >> I've tried to install FreeBSD 7 with no success, as it seems... the 
> >> sysinstall tool doesn't support such big slices.
> >>
> >> I've read about the "Large Data Storage on FreeBSD" but I'm still confused.
> >>
> >> I've also thought on using slices of 1Tb, and join all them using vinum. 
> >> What do you think about this last option?
> >>
> >> Thanks a lot for your help.
> >>
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-- 
Julien Cigar
Belgian Biodiversity Platform
http://www.biodiversity.be
Université Libre de Bruxelles (ULB)
Campus de la Plaine CP 257
Bâtiment NO, Bureau 4 N4 115C (Niveau 4)
Boulevard du Triomphe, entrée ULB 2
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Mail: jcigar at ulb.ac.be
@biobel: http://biobel.biodiversity.be/person/show/471
Tel : 02 650 57 52



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