Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!lavaca.uh.edu!karazm.math.uh.edu!jet From: jet@karazm.math.uh.edu (J. Eric Townsend) Newsgroups: comp.unix.aix Subject: Re: RS/6000 -- why can't I move /usr somewhere else? Message-ID: <1990Dec20.194724.10276@lavaca.uh.edu> Date: 20 Dec 90 19:47:24 GMT References: <1990Dec18.230856.24448@lavaca.uh.edu> Sender: nntppost@lavaca.uh.edu (NNTP Posting Service) Organization: University of Houston -- Department of Mathematics Lines: 63 In article marc@arnor.uucp writes: >You have (or had) a number of choices. >1. Add the wren to the root volume group. If you had done this, and >could get away with ignoring which disk data was on, you would have >been done. Just grow the various file systems and paging space as you >like. Bzzzt, but thank you for playing. If you install the OS on the Wren (instead of the internal 120) the default paging space gets put there as well *AND YOU CAN'T GET RID OF IT*! ie: I decided to put *everything* sans paging on the Wren, and allocate the 120 as paging only. Everything went fine until I went to remove the default paging (/dev/hd6?) that was installed on the wren. I did just what the docs told me and set the paging space so that it wouldn't be automagically used on reboot. But, I couldn't get rid of it. I even grepped for all occurances of the device in /etc and replaced them with the paging device I wanted to use. But the cat came back the very next day. AIX *still* used the external paging device. To make things worse, it uses it *first*. If I *have* to use the "default installation" paging device, I should at least be able to change its place in the "what do I use first queue". Anybody who has the DASD 120 will agree that it screams in comparison to a Segate Wren on the SCSI bus... >2. Install with the wren as the root volume group. There is a menu >[...] >not easy) to move volume groups around after install.) You could then make >the 120 a second volume group, and put most of the paging space on it. Yeah, great. So I have to use up 16Mb of really slow paging space before I get to the fast paging space. >4. Add the wren to the root volume group, and then move /usr >completely on to it. This, I think, takes some wizardry and doing >some of the steps in maintenance mode. But I think its possible. Um, every time I tried to edit /etc/filesystems and reboot the machine refused to come back up. Do you know a trick I don't know? >5. Install on the wren, then add the 120 to the root volume group >later, and move paging space to it. Again, the *original* paging space won't go away. Something somewhere deep inside the pit of AIX insists on activating it. Just in case I didn't explain earlier, here's how I'd like to set things up: Server: internal drive (the fast DASD 120): / and paging external drives (scsi): everything else. Clients: internal drive (the fast DASD 120): / and paging nfs mount everything else from the server. -- J. Eric Townsend Internet: jet@uh.edu Bitnet: jet@UHOU Systems Mangler - UH Dept. of Mathematics - (713) 749-2120 "If you are the system administrator and this is the first time you are logging into your system, use the login name root." -- IBM RS/6000 docs