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Date:      Tue, 19 Mar 2002 16:32:13 -0500
From:      "Joseph Gleason" <clash@tasam.com>
To:        "Joseph Gleason" <clash@tasam.com>, "Jaye Mathisen" <mrcpu@internetcds.com>
Cc:        <questions@FreeBSD.ORG>
Subject:   Re: Problems with large disk. (> 1 TB)
Message-ID:  <00b401c1cf8d$8960b7c0$090510ac@gleason>
References:  <20020319131556.D99985@backmaster.cdsnet.net> <008901c1cf8c$be5d6f50$090510ac@gleason>

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Actually, looks like this has allready been answered.  Check the archives
for a message with a subject "FreeBSD 1TB filesystem limitation" from Oct
2001.

Unless something has changed, FreeBSD cannot support filesystems 1TB or
greater.


----- Original Message -----
From: "Joseph Gleason" <clash@tasam.com>
To: "Jaye Mathisen" <mrcpu@internetcds.com>; <stable@FreeBSD.ORG>
Cc: <questions@FreeBSD.ORG>
Sent: Tuesday, March 19, 2002 16:26
Subject: Re: Problems with large disk. (> 1 TB)


> I don't have a solution for you, but I am pretty sure I know the problem:
>
> calc 2^31*512 = 1TB.
>
> disklabel references everything using a unit of 512 byte sectors.  That
> number of sectors I'm sure is stored as an unsigned int making 2^31-1 the
> max number of sectors.  Aka, just under a TB is fine, one TB or over is
bad.
>
> So the 32mb dos partition probably made it just under a TB.
>
>
> Maybe someone else knows a solution for this problem.
>
> ----- Original Message -----
> From: "Jaye Mathisen" <mrcpu@internetcds.com>
> To: <stable@FreeBSD.ORG>
> Cc: <questions@FreeBSD.ORG>
> Sent: Tuesday, March 19, 2002 16:15
> Subject: Problems with large disk. (> 1 TB)
>
>
> >
> > Trying to disklabel a 1 TB disk (with sysinstall or disklabel)
> > produces a lot of errors.  In sysinstall, there's a kazillion
> > overflows and negative offsets, and stuff.
> >
> > With disklabel, it tells me that the partition size needs to
> > be truncated, then writes the label.  then if I run disklabel
> > again, it takes the truncated size, says it's too big, and
> > truncates it again.
> >
> > Interestingly enough, using DOS FDISK to put a 32MB dos partition
> > at the beginning of the drive makes it all work fine.
> >
> > I am not convinced that I am not missing some space, but I haven't
> > counted up everything yet.
> >
> > In any case, is this supposed to work?  I'll snag a ton of data
> > if somebody wants to look at it, but I don't want to invest
> > the time if it's not meant to.
> >
> > This is a 8 disk Maxtor 160GB disks in raid 5, on a 3ware
> > 7850 with the 7.4 release firmware.
> >
> > -Stable supped as of 3/19.
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the message
> >
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-questions" in the body of the message
>


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