doug@icase.edu (Doug Peterson) (11/03/89)
A few days ago, I posted a problem regarding system performance using this mix of disk controllers under SunOS 4.0.3. The *REAL* problem wasn't the disks/controllers at all. It turns out that by default, all diskless clients share the same /usr/tmp directory, and under SunView, write a file in this directory called vm_fontsn0, which is shared by all clients which are using that same font for the SunView environment. As each client mmaps into the file, it becomes corrupted, and consequently, the window environment gets blown away, leaving the nfsd's hanging in a tight loop waiting for operations to complete. The fix is to create a separate (private) /usr/tmp for each client. Foreach client In /usr ln -s /private/usr/tmp In / mkdir private cd private mkdir usr cd usr mkdir tmp chmod 0777 tmp This fix came from the HOTLINE at SMI in a matter of hours after I called. In the interest of shedding light on the subject, I have had the 451 & 753 in both orders (451 ahead of 753, and vice versa) with no noticeable difference. Currently, diskless clients are on xy0 (the 451), and /, /usr & homedirs are on xd0 (the 753). The 753 is in slot 8, the 451 in slot 9. I may switch things around, and experiment, but not for a while. Thanks to all who responded.