Hi there, I was trying to configure a debian to serve an nfs to my mac. The main problem I encountered was that uids and guids did not match on those computers, so I did not have read-write access I need. Since I did not want to change the guids and gids on any of the machines I decided to use the all_squash option allied to anongid and anonuid on exportfs: /path_to_export mac_IP(rw,all_squash,anonuid=1000,anongid=1000) So that the mac would see all of the things inside the mounted directory /path_to_export as having both guid and gid 1000. It did not work.
First I thought it had to do with the mac, but that was not the case: my next step was testing it with another computer running debian. And again, it did not work. Basically the all_squash option in exportfs is being ignored on these debian systems. A full description of what I did follows. I started by setting a machine called mozart as server (it runs debian stable and a 2.4 kernel). I changed the /etc/exports adding: / haydn(rw,all_squash,anonuid=1000,anongid=1000) those number came from the other computer, haydn (running debian unstableand a 2.6 kernel), by issuing: haydn$ id rhwinter So, as I mounted this entry from mount: haydn$ cat mount mozart:/ /mozart nfs rw,noauto 0 0 haydn$ mount /mozart I expected it to list all files as if they were owned by rhwinter (or gid/uid 1000). That is, I expected: haydn$ ls -n /mozart total XXXX drwxr-xr-x 12 1000 1000 1112 May 5 2006 XXXX Instead, to my surprise, I got: haydn$ ls -n /mozart total XXXX drwxr-xr-x 12 1001 1001 1112 May 5 2006 XXXX Now, those uid and gid are exactly the same as in mozart. I first thought that the anongid and annonuid were not working. So I decided to test all_squash by itself. That is, I changed mozart's /etc/exports to: / haydn(rw,all_squash) And exported the volumes again: mozart# exportfs -a (I also tried exportfs -r, but that did not make any difference) And umounted and mounted /mozart on haydn again, that is: haydn# umount /mozart haydn# mount /mozart Now I expected the uid and gid of everything on haydn's /mozart to be 65534 (those of 'nobody'). Instead I got exaclty the same as before. The last thing I tried was inverting haydn and mozart, that is setting mozart as the client and haydn as the server, to see if it was related their flavors/kernels. The same thing happened, all_squash was ignored yet again. I even tried restarting the nfs-related processes (/etc/init.d/nfs-common restart; /etc/init.d/nfs-kernel restart;/etc/portmap restart) on both machines but it still didn't work. Any clues on what might be going on? Did I get the way all_squash works all wrong? Thanks a lot on any help!!! rhwinter (PS: please CC any replies of this to my email since I don't subscribe to debian-user!!!) Some references I (had a hard time to find, perhaps they might help others!): NFS related: - If it mounts but can't access, check permissions, gid's and uid's: http://www.troubleshooters.com/linux/nfs.htm#_If_it_mounts_but_cant_access NFS - mac OS X related stuff - [OS X] NFS mounts on OS X, including automount: http://tazman.princeton.edu/pipermail/osx/2006/000036.html - How to use Mac OS X as an NFS client: http://blogs.acceleration.net/theoden/archive/2006/06/27/2973.aspx - Using automount on Mac OS X: http://sial.org/howto/osx/automount/ - Automounting NFS shares on Mac OS X: http://i1.dk/misc/automount_nfs_volumes_on_mac_osx/ - NFS from Mac OS X: http://www.eecs.umich.edu/dco/help/NFSMac.htm
