Hi! How can I reexport a mount point through NFS without causing too much surprise to the users? The mount point contains a removable media which can be removed anytime since it is not locked and the gui user can work the same way as in front of a Windows machine. The system is Red Hat 6.2, upgraded to 2.2.16-3 (+ide-patch +reiserfs) and nfs-utils-0.1.9.1. The old user space nfsd and mountd may have been given a "--reexport" option and it was done. With the above config, I tried this, at first only on localhost. etc/exports: /mnt/cdrom localhost(ro,o_root_squash[,no_subtree_check]) I tried this: # /etc/rc.d/init.d/nfs start # /etc/rc.d/init.d/nfslock start # mount -t nfs localhost:/mnt/cdrom /mnt/XXX # mount /mnt/cdrom # ls /mnt/cdrom /mnt/XXX The content of the CD is visible under /mnt/cdrom, /mnt/XXX is empty. # umount /mnt/XXX # mount -t nfs localhost:/mnt/cdrom /mnt/XXX mount: localhost:/mnt/cdrom failed, reason given by server: Permission denied # umount /mnt/cdrom # /etc/rc.d/init.d/nfs stop # /etc/rc.d/init.d/nfslock stop # mount /mnt/cdrom # /etc/rc.d/init.d/nfs start # /etc/rc.d/init.d/nfslock start # mount -t nfs localhost:/mnt/cdrom /mnt/XXX # ls /mnt/cdrom /mnt/XXX The content of the CD is visible under /mnt/XXX, too. # umount /mnt/cdrom umount: /mnt/cdrom: device is busy # umount /mnt/XXX # umount /mnt/cdrom umount: /mnt/cdrom: device is busy This happens until "/etc/rc.d/init.d/nfs stop" The "unhide" option does not seem to work, maybe it is not relevant. With manual eject, # ls /mnt/cdrom /mnt/XXX shows both directory empty if the "no_subtree_check" is not given. If it is, then /mnt/XXX shows the old directory content. If I put back the CD then the next # ls /mnt/cdrom /mnt/XXX shows again the content of the CD in both directories. But when I put in another CD then # ls /mnt/cdrom /mnt/XXX shows either garbage or nothing under /mnt/cdrom and the same under /mnt/XXX (no_subtree_check is not given) or the previous content (no_subtree_check is given). I have to umount /mnt/XXX, stop nfs and kill gmc to be able to mount the CD again. This procedure worked the same with the stock (0.1.6) nfs-utils. Can someone help? The user would like to be able to umount /mnt/cdrom or manually eject the CD from under the reexport and insert another and see the new content (almost) instantly on another machine. Is is solvable with 2.2.x? Regards, Zoltan Boszormenyi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
