Jim McQuillan wrote: > > Ken Yap wrote: > > > > >May I have nfsroot read-only ? > > > > > >var and tmp is on local hd or ramdisk, login do not work, can't open tty > > >for /dev/tty1 > > > > The login process is probably trying to chown /dev/tty1, which is on > > your nfsroot. One way to allow the root fs to be ro would be to put the > > files that need to be mutable on a ramdisk. > > That's exactly what we have done with LTSP. We create a ramdisk > and mount it on /tmp, then we have symbolic links in the /dev directory > pointing to the device nodes in /tmp. > > Jim McQuillan > email@example.com I used to be a fan of using RAM disks for /tmp (and /var/tmp), but these days I am much keener on using an initial RAM disk for the whole of /, only mounting /usr and /home using nfs. I go for a 16MB initial RAM disk with all of /etc, /dev, etc. on it, but usually not much of /lib (I put the rest of the libraries into /usr/lib). This paradigm is fast (everything is always in RAM), secure (not using NFS for /etc stuff) and really easy to manage. However, you need enough RAM to hold the RAM disk as well as the kernel and apps. I use the same initial RAM disk image for forty lab machines and another one for the 96 nodes in our Beowulf. No need for seperate images for each machine. Cheers, Bob Edwards. =========================================================================== This Mail was sent to netboot mailing list by: Bob Edwards <Robert.Edwards@anu.edu.au> To get help about this list, send a mail with 'help' as the only string in it's body to firstname.lastname@example.org. If you have problems with this list, send a mail to email@example.com.
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