Re: [Gptfdisk-general] gdisk 32-bit overflow bug on >2TB disks

[Rod S. <rod...@ro...>]

On 04/19/2013 06:25 PM, Sage Weil wrote:
> Hi-
>
> We hit a bug on sgdisk where it would create a new partition of the
> wrong size, apparently due to a 32-bit field used in the partition
> creating/sizing code.  It appears to trigger when we use syntax like
>
> 2:-${size}M:0
>
> Switching to
>
> 2:0:${size}
>
> does not have the same problem.
>
> See this bug for details:
>
> http://tracker.ceph.com/issues/4757
>
> It wasn't immediately obvious if this was fixed in a newer version
> (we're on ubuntu precise, 0.8.1-1build1).

Please try using the latest version (0.8.6). Version 0.8.1 is OLD -- it
was released 1.5 years ago! Also, version 0.8.3 fixed what sounds like
the problem you're reporting; from
http://www.rodsbooks.com/gdisk/revisions.html:

: 0.8.3 (3/23/2012)—This version offers a few minor improvements and
: bug fixes. The gdisk program now states the name of the disk that's
: been modified after a write operation, and a bug has been fixed that
: caused sgdisk to incorrectly truncate the sizes of over-2TiB
: partitions on 32-bit (but not 64-bit) systems. This version also
: improves the handling of Ctrl+D on some systems and includes a fix to
: enable proper compilation under GCC 4.7.

-- 
Rod Smith
rod...@ro...
http://www.rodsbooks.com