[linux-lvm] Doubts about LVM2 real limits

[Scott Smyth]

We have done >100 TB without a problem in a VG and in
a single LV.  The problem is with file system selection if you
are using this large a LV as a file system.  You are limited to
XFS or JFS w/o venturing into ext4 and reiserfs4 which
some people view as experimental still.

We can only speak for XFS on a 100 TB file system.  We have
yet to try ext4 or reiserfs4 as a commercial file system.

3 Xyratex FC RAID controllers w/ expansion chassis attached.
4 Gb/s QLogic controllers.

linux-2.6.17.14
device-mapper-1.02.13
LVM2-2.02.16

Sincerely,
Scott

Cesar O. Pablo wrote:
> Hi,
>
>
>  We have plans to build a 30TB aprox. data storage using a set of SAN boxes configured as 
> RAID 5, our understanding is that using LVM2 with Red Hat 4 and our 64 bit AMD opteron 
> processors shall allow us to do that. Our concern is to know in advance if our approach is 
> wrong or even better if somebody else has been successfully taking the same road before.
>
>  Documentation tells us that the limit is in the order of the 8 Exabytes (8TB for IA-32) 
> but this is not enough as this is a go / no go decision.
>
>   Thanks for any help or pointer to a similar rig.
>
>  Cesar O. Pablo
>  
>
>
>
>
> Cesar
>
>
>
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