[linux-lvm] Doubts about LVM2 real limits
scotts at cuttedge.com
Wed Feb 7 15:53:32 UTC 2007
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.
Cesar O. Pablo wrote:
> 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
> linux-lvm mailing list
> linux-lvm at redhat.com
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
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