[OpenAFS] Max partition and Volume size
Hartmut Reuter
reuter@rzg.mpg.de
Tue, 01 Apr 2008 10:18:33 +0200
Rich Sudlow wrote:
> I wanted to double check - is the max partition and volume size
> both 2 TB?
>
> Are there any plans on increasing the partition size
> in the near future?
>
> Thanks,
>
> Rich
>
Partition size doesn't matter too much any more when you use "OpenAFS +
object storage" (see best practice workshop in May). But maximum volume
size right now is limited by the int32 to count the volume's blocks and
also the disk quota. If you don't set a disk quota you may also today
end up with bigger volumes. Our biggest has 6.3 TB, but the number of
blocks you see with "vos examine" is modulo 4 TB, of course.
I admit: this is not what we wanted, but it happened.
Hartmut
~: vos ex aug-shotfiles.archive
aug-shotfiles.archive 536892900 RW -1728398890 K On-line
afs4.bc.rzg.mpg.de /vicepx 23830 files
RWrite 536892900 ROnly 536892901 Backup 0
MaxQuota 0 K, osd flag 1
Creation Fri Oct 11 10:43:06 1996
Copy Wed Feb 6 11:32:01 2008
Backup Never
Last Update Tue Apr 1 10:13:09 2008
160693 accesses in the past day (i.e., vnode references)
RWrite: 536892900 ROnly: 536892901
number of sites -> 3
server afs4.bc.rzg.mpg.de partition /vicepx RW Site
server afs16.rzg.mpg.de partition /vicepx RO Site
server afs4.bc.rzg.mpg.de partition /vicepx RO Site
~:vos traverse afs4 -id aug-shotfiles.archive
servers:
afs4
File Size Range Files % run % Data % run %
----------------------------------------------------------------
0 B - 4 KB 240 1.01 1.01 399.045 KB 0.00 0.00
4 KB - 8 KB 9 0.04 1.04 50.339 KB 0.00 0.00
8 KB - 16 KB 31 0.13 1.17 395.975 KB 0.00 0.00
16 KB - 32 KB 79 0.33 1.51 1.851 MB 0.00 0.00
32 KB - 64 KB 87 0.37 1.87 3.821 MB 0.00 0.00
64 KB - 128 KB 92 0.39 2.26 8.427 MB 0.00 0.00
128 KB - 256 KB 105 0.44 2.70 17.480 MB 0.00 0.00
256 KB - 512 KB 137 0.57 3.27 53.902 MB 0.00 0.00
512 KB - 1 MB 189 0.79 4.07 143.429 MB 0.00 0.00
1 MB - 2 MB 1281 5.38 9.44 1.816 GB 0.03 0.03
2 MB - 4 MB 1154 4.84 14.28 3.210 GB 0.05 0.08
4 MB - 8 MB 1567 6.58 20.86 8.989 GB 0.14 0.22
8 MB - 16 MB 1647 6.91 27.77 18.796 GB 0.29 0.50
16 MB - 32 MB 1869 7.84 35.61 42.181 GB 0.64 1.15
32 MB - 64 MB 2161 9.07 44.68 96.362 GB 1.47 2.62
64 MB - 128 MB 1997 8.38 53.06 181.517 GB 2.77 5.40
128 MB - 256 MB 3272 13.73 66.79 606.521 GB 9.27 14.66
256 MB - 512 MB 3754 15.75 82.55 1.319 TB 20.66 35.32
512 MB - 1 GB 2261 9.49 92.04 1.496 TB 23.42 58.74
1 GB - 2 GB 1898 7.96 100.00 2.635 TB 41.26 100.00
----------------------------------------------------------------
Totals: 23830 Files 6.389 TB
Storage usage:
---------------------------------------------------------------
1 local_disk 965 files 226.115 MB
arch. Osd 4 raid6 3898 objects 13.796 GB
arch. Osd 5 tape 22858 objects 6.387 TB
Osd 8 afs16-a 47 objects 32.475 GB
Osd 10 afs4-a 260 objects 206.205 GB
arch. Osd 13 hsmgpfs 510 objects 463.637 GB
Osd 19 mpp-fs10-a 8 objects 7.143 GB
Osd 32 afs8-a 31 objects 21.075 GB
---------------------------------------------------------------
Total 28577 objects 7.115 TB
Data without a copy:
---------------------------------------------------------------
if !replicated: 1 local_disk 965 files 226.115 MB
arch. Osd 4 raid6 4 objects 3.625 MB
arch. Osd 5 tape 18413 objects 5.879 TB
Osd 10 afs4-a 3 objects 1.682 GB
---------------------------------------------------------------
Total 19385 objects 5.881 TB
~:
--
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Hartmut Reuter e-mail reuter@rzg.mpg.de
phone +49-89-3299-1328
fax +49-89-3299-1301
RZG (Rechenzentrum Garching) web http://www.rzg.mpg.de/~hwr
Computing Center of the Max-Planck-Gesellschaft (MPG) and the
Institut fuer Plasmaphysik (IPP)
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