On Thu, Oct 10, 2013 at 09:39:38PM +0000, Ming Lei wrote: > > I want to set up the real directory as the root of the pseudo filesystem > got exported from the server. Unless you have some very good reason, I recommend just ignoring the pseudo filesystem. Just export the directories you want to without using fsid=0 or bind mounts, just as you would with NFSv2/v3. That will work fine on any recent server. --b. > Can I do it or I have to create /export > empty directory as the root of the pseudo FS and then bind the real > directories? > > I have this test, both server and client running 3.11.0+: > > On the server, there is /root directory. > [root@xxx ~] ls /root > anaconda-ks.cfg disk Documents fs_log.old install.log.syslog Public > Desktop disk.c Downloads install.log linux3 > rpmbuild > [root@xxx ~]# ls /root/Downloads/linux-2.6.39.4 > arch crypto firmware Kconfig Module.symvers security > block cscope.in.out fs kernel net sound > config cscope.out include lib README tools > config-rh cscope.po.out init MAINTAINERS REPORTING-BUGS usr > COPYING Documentation ipc Makefile samples virt > CREDITS drivers Kbuild mm scripts > > I have this /etc/exports on the server: > /root *(ro,fsid=0,crossmnt,no_root_squash) > /root/Downloads/linux-2.6.39.4 *(rw,no_root_squash,nohide) > /root/linux3/Documentation/filesystems *(rw,no_root_squash,nohide) > > [root@xxx ~]# cat /proc/net/rpc/nfsd.export/content > #path domain(flags) > # /root/.gvfs *() > /root * > (ro,no_root_squash,sync,wdelay,crossmnt,no_subtree_check,fsid=0,uuid=46bb42 > 56:d3c84b6f:bbbfff3a:8b0d912c) > [root@xxx ~]# cat /proc/net/rpc/nfsd.fh/content > #domain fsidtype fsid [path] > * 1 0x00000000 /root > > > On the client side, what I saw: > [root@xxx /]# mount -o vers=4.1 10.1.13.66:/ /mnt > [root@xxx /]# cd /mnt > [root@xxx mnt]# ls > anaconda-ks.cfg disk Documents fs_log.old install.log.syslog Public > Desktop disk.c Downloads install.log linux3 > rpmbuild > [root@xxx mnt]# cd Downloads/linux-2.6.39.4 > [root@xxx linux-2.6.39.4]# ls > arch COPYING cscope.out firmware ipc lib > Module.symvers samples tools > block CREDITS cscope.po.out fs Kbuild MAINTAINERS > net scripts usr > config crypto Documentation include Kconfig Makefile > README security virt > config-rh cscope.in.out drivers init kernel mm > REPORTING-BUGS sound > [root@xxx linux-2.6.39.4]# rm REPORTING-BUGS > rm: remove regular file `REPORTING-BUGS'? y > rm: cannot remove `REPORTING-BUGS': Read-only file system > > The question is: > Why can I delete this file even I specify the > mountpoint /root/Downloads/linux-2.6.39.4 to allow RW access? > > Thanks > Ming > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
