[CentOS] Setting Group owner of files on USB drive
Matt Hyclak
hyclak at math.ohiou.edu
Fri May 30 20:39:36 UTC 2008
On Fri, May 30, 2008 at 04:37:58PM -0400, Robert Moskowitz enlightened us:
> I just got a 8Gb flash drive and went to copy a bunch of files onto it.
> I wanted to perserve everything, so I just took my archiving rsync
> command and altered it to go to localhost:/media/RALLY2/ (name of flash
> drive). I am getting errors with changing the group owner. Huh?
>
> So I try to just use mkdir to create a directory on the flash drive.
> The directory has a group of root ???
>
> So I try a chgrp and get:
>
> [root at mine me]# chgrp me /media/RALLY2/Stuff
> chgrp: changing group of `/media/RALLY2/Stuff': Operation not permitted
>
>
> OK why can't I set the group to something other than root?
>
> ls -lstr /media/
> total 4
> 4 drwxr-xr-x 3 me root 4096 May 30 16:28 RALLY2
>
> and of course for /media:
>
> 8 drwxr-xr-x 3 root root 4096 May 30 16:18 media
>
Most likely the device is formatted as FAT32, which has no concept of
permissions.
Reformat it, ignore the errors, or modify your rsync command to not preserve
uid/gid.
Matt
--
Matt Hyclak
Department of Mathematics
Department of Social Work
Ohio University
(740) 593-1263
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