Multiple File backup

I have 6GB in 2 file systems say /a and /b. I need to back up to disk. How do i back up a 5G instance to split across the filesystems ? It probably goes something like this ... Point the tapedev parameter to /a start ontape when ontape prompts for tape 2 link /b to /a. This is the part I have a problem with. What is the command for this ? After doing the above press return ... Is that right ?

Jack A wrote: > I have 6GB in 2 file systems say /a and /b. I need to back up to disk. How > do i back up a 5G instance to split across the filesystems ? It probably > goes something like this ... > > Point the tapedev parameter to /a I suggest creating a symbolic link, /symlink, that initially points to (a file in) /a. You'd set your TAPEDEV parameter to /symlink. You need to worry about your TAPESIZE parameter; can we assume that the same amount of space is available in /a and /b? If they are asymmetric, you may have problems using it all. > start ontape > > when ontape prompts for tape 2 link /b to /a. This is the part I have a > problem with. What is the command for this ? At this point, in your other window, you relink /symlink to (a file in) /b. This is the equivalent of removing the first tape and loading the second. Fortunately, disk files are inherently rewind devices. Note that the files you use must exist before you start. > After doing the above press return ... > > Is that right ? Yes. This is the obvious way to do it; I have not formally verified that it works. -- Jonathan Leffler #include <disclaimer.h> Email: jleffler@earthlink.net, jleffler@us.ibm.com Guardian of DBD::Informix v2003.04 -- http://dbi.perl.org/