On Thu, 2003-07-03 at 09:49, Richard Masuda wrote: > There is a redbook at the z/vm site that may help you. It discusses the > use of a basevol (containing shared r/o code) and mounting a guestvol > (server unique code r/w over the r/o basevol directories). For example, > the basevol is initially built and it has an /etc. The clone will link r/o > to the basevol /etc. In the startup scripts for the clone a minidisk that > is r/w is mounted over /etc using the mount - - bind option. It looks good > in the redbook and I have tried it with a couple of linux clones. It seems > to work, although I have had some problems with some process trying to > write into a r/o directory. Anyhow, the book explains it much better.
Oh, yeah. Forgot bind mounts. They're a little scary at first, and a lot of sites don't like to implement them because unless your Linux admins are really sharp it's easy to forget what is r/o vs. r/w, but they are a really cool way to save a lot of DASD. Again, you need well-specified policies and procedures before applying service in this sort of environment. Adam
