RE: Huge Partition

D_at_7@k|N&
Date: 04/21/04

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    To: "'For users of Fedora Core releases'" <fedora-list@redhat.com>
Date: Wed, 21 Apr 2004 07:36:14 -0700

     
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    Would the filesystem type make a difference here? Or are the problems happening at a lower level than the filesystem? I don't know ext3's limitations are, but it seems like this might be better handled with a different filesystem. Just a thought.

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    - -----Original Message-----
    From: fedora-list-bounces@redhat.com [mailto:fedora-list-bounces@redhat.com] On Behalf Of Rick Mohr
    Sent: Wednesday, April 21, 2004 7:00 AM
    To: For users of Fedora Core releases
    Subject: RE: Huge Partition

    OK, I haven't dealt with this on Fedora, but I did run across a similar problem when I installed RHAS3. I had a 3Ware card with about 1.5TB of disk space, most of which I wanted on a single partition. The anaconda installer couldn't handle it, but I believe I read something about how there used to be a limit hardcoded into it that caused the problem. (Don't know if this was fixed or not.)

    I also tried creating the partition after installation, and that also failed. Actually, I used parted and it appeared to work. But when I formatted it as ext3 it would always hang part way through. There were also a bunch of I/O error messages in the syslogs.

    I ended up finding a reference to the problem on 3Ware's web site (although I can't seem to track down the URL now). It mentioned that there was a problem with using 'int' instead of 'unsigned long' in the sd.c file in the scsi driver. The suggested fix was this:

    static int sd_init_command(Scsi_Cmnd * SCpnt)
    {
            /* int dev, block, this_count; */
            int dev, this_count;
            unsigned long block;

    I am not sure if that is the proper solution, but it did eliminate the I/O errors from my logs. However, I have not come close to filling the partition up, so I cannot verify that all the space is actually usable.

    Oh, and my /proc/partitions file still shows a negative number of blocks for this partition even after I made the change.

    Hope that helps.

    - --Rick

    On Wed, 21 Apr 2004, Bill Gradwohl wrote:

    > The testing I started yesterday afternoon completed, and I'm sorry to
    > say the result is a failure.
    >
    > Although parted created a 2TB partition as verified by fdisk, only 1TB
    > is useable. I wrote 1001 files of just slightly under 1G each when the
    > script failed for out of disk space. The script simply used the cp
    > command to copy a single master file to FILE.XXXX where XXXX is an
    > increasing number.
    >
    > I tried googling for disk space limits, but got too many bogus hits to
    > be of value.
    >
    > Does anyone know what the "official" disk space limits are? Does
    > anyone know what I need to do to get a single partition of greater
    > than 1TB? I have a test platform with 2TB of physical disk if someone
    > can point me in the right direction to recompile whatever.
    >
    > Martin:
    >
    > If you have a 2TB partition, have you tested it for availability
    > beyond 1TB?
    >
    > --
    > Bill Gradwohl
    > YCC
    > (817) 224-9400 x211
    > www.ycc.com
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    >

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