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Re: >1 TB RAID servers

To: Steve Lord <lord@xxxxxxx>, hch@xxxxxxxxxxxxx
Subject: Re: >1 TB RAID servers
From: Christian Guggenberger <christian.guggenberger@xxxxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 25 Mar 2004 22:34:42 +0100
Cc: Joshua Baker-LePain <jlb17@xxxxxxxx>, Daryl Herzmann <akrherz@xxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <40634EA3.3080302@xxxxxxx>
References: <Pine.LNX.4.58.0403251052360.24003@xxxxxxxxxxxxxxxxxxxxxxxxxx> <Pine.LNX.4.58.0403251251070.5990@xxxxxxxxxxxxxxxxxx> <40634EA3.3080302@xxxxxxx>
Reply-to: christian.guggenberger@xxxxxxxxxxxxxxxxxxxxxxxx
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Thu, 2004-03-25 at 22:26, Steve Lord wrote:
> Joshua Baker-LePain wrote:
> > On Thu, 25 Mar 2004 at 11:00am, Daryl Herzmann wrote
> > 
> > 
> >>Hiya,
> >>
> >>I am intrigued by the message below by Eric.  I have 4 machines running
> >>with XFS on kernel 2.4 with software-or-hardware RAID arrays well over 1
> >>TB in size.  Have I just been lucky that the filesystems have not been
> >>trashed itself yet?  Time to hug my backups even tighter!? :)
> > 
> > 
> > I was going to add to the bug likewise.  I've got two machines with dual 
> > 3ware 7508 cards running hardware RAID5 with software RAID0 stripes across 
> > the cards.  The md stripe ends up just under 2TB.  They're currently 
> > running 2.4.21 + XFS 1.3.
> > 
> > In fact, I know of several folks with arrays limited only by the 2TB 
> > limit.
> > 
> 
> But maybe you are lucky in using drivers which are clean in
> the right places, for example incorrect use of a signed var
> can mess this up. Some drivers do not work so well when you go out
> beyond 1 Tbyte.
> 
Thanks, Steve.

By the way: which drivers are supposed to be save in 2.4?
Christoph, you're doing some work on the scsi front, could you enlight
us?

cheers.
 - Christian




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