200 GB drive has room but gzip indicates "No space left on device"

[David Christensen]

Cygwin:

I have a 200 GB drive (E:) that I store ntbackup images on.  After making a
backup image, I use Cygwin to gzip the image and md5sum the tarball.  A few
days ago, gzip started complaining "No space left on device":

    <CVSENV>2006-05-29 12:13:47 Administrator@p42800e /backup/bin/p42800
e
    $ /usr/bin/gzip '/cygdrive/e/backup/p42800e/p42800e-exchange-2006052
7-230000.bkf'
    gzip: /cygdrive/e/backup/p42800e/p42800e-exchange-20060527-230000.bk
f.gz: No space left on device


Cygwin "md5sum" seems to work okay.


The Windows properties dialog for the drive indicates 125 GB used and 61.3
GB available.


I also noticed that Cygwin "df" indicates a large negative number for space
used and a small positive number for space available:

    <CVSENV>2006-05-29 12:14:15 Administrator@p42800e /backup/bin/p42800
e
    $ df
    Filesystem           1K-blocks      Used Available Use% Mounted on
    C:\cygwin\bin         78148160   5025460  73122700   7% /usr/bin
    C:\cygwin\lib         78148160   5025460  73122700   7% /usr/lib
    C:\cygwin             78148160   5025460  73122700   7% /
    c:                    78148160   5025460  73122700   7% /cygdrive/c
    e:                     1048576 -73786976294774971336     52160 101% 
/cygdrive/e


"cygcheck -s -v -r > cygcheck.out" is attached FYI.


Any suggestions?


TIA,

David
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