Messages in this thread | | | Date | Thu, 11 Jan 2007 12:38:12 +0100 | From | Robert Schwebel <> | Subject | Mounting tmpfs with symbolic gid doesn't work |
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Hi,
Mounting tmpfs with gid=<symbolic-group> doesn't work on recent kernels any more; the same with uid=<symbolic-username> works fine:
rsc@isonoe:~$ mkdir troet rsc@isonoe:~$ sudo mount -t tmpfs -ogid=rsc none troet/ mount: wrong fs type, bad option, bad superblock on none, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so rsc@isonoe:~/svn/ptxdist-trunk$ dmesg | tail -n 1 tmpfs: Bad value 'rsc' for mount option 'gid' rsc@isonoe:~$ sudo mount -t tmpfs -ogid=1006 none troet/ rsc@isonoe:~$ mount | grep troet none on /home/rsc/troet type tmpfs (rw,gid=1006) rsc@isonoe:~$ ls -ld troet/ drwxrwxrwt 2 root 1006 40 Jan 11 12:32 troet/ rsc@isonoe:~$ sudo umount troet/ rsc@isonoe:~$ sudo mount -t tmpfs -ouid=1006 none troet/ rsc@isonoe:~$ sudo umount troet/ rsc@isonoe:~$ sudo mount -t tmpfs -ouid=rsc none troet/ rsc@isonoe:~$ ls -ld troet/ drwxrwxrwt 2 rsc root 40 Jan 11 12:33 troet/ rsc@isonoe:~$ sudo umount troet/
Tested with 2.6.19-rc6, the behaviour seems to have worked until at least 2.6.16. Does anyone have an idea?
Robert -- Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hannoversche Str. 2, 31134 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-9
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