Gordon and all the others who replied, thanks for all the information you provided. I think I've enough information now to keep on with my Linux installation.
Werner "Wolfe, Gordon W" wrote: > > Werner, > > I'm glad I was able to help you find your storage problem. I remember when sonmeone >showed me the "du" command about a year and a half ago how useful it was to me. > > As far as LVM is concerned, there are others on this list who are more qualified to >speak about LVM than I am. I'm sure this question has been answered in this list >before. You might check the list archives at >http://www.marist.edu/htbin/wlvindex?linux-vm and do a search (at the bottom of the >page) on LVM. Be patient. The search can take a while. > > Having said that, I do seem to recall that someone posted the fact that even the >boot disk can be on a logical volume. Probably any mount point can be on a logical >volume. > > Here at Boeing, we use LVM volumes mostly for user data, /home for example, or for >Oracle databases, so that we can use more than one physical volume for a mount point. > We also keep the Oracle code in logical volumes so we can have more than one mount >point on a minidisk. For our general purpose (non-Oracle, non-WebSphere) linux >systems, we create the following minidisks: > > 292 mounted as / (boot disk) > 293 V-disk for swap > 294 mounted shared read-only as /usr > 295 mounted as /home > > For boot purposes, Linux needs to have (at least) access to /boot, /bin, /sbin and >/etc on the boot disk until it is up far enough to mount other filesystems. It may >also need /var or /tmp. It definitely does not need /usr, /opt or /home unless >you've done something really radical to change your system. > > One more thing. I wouldn't get too enamored of LVM just yet. I was in a meeting >yesterday and one of the Unix gurus we work with on Linux/390 (and who is usually >pretty knowlegeable about these things) mentioned that LVM is going to be sunsetted. >It is rumored that Sistina will not be enhancing it beyond the 2.4 kernel, only >providing basic maintenance. This same person said that Linus won't be putting LVM >into 2.6 when it comes out. LVM will apparently be replaced by something similar but >more capable from IBM, and that this new filesystem is already in the 2.4.17 kernel. >There was an IBM rep there at the meeting and he seemed to know about this change as >well. We've put all our expansion of LVM on hold until we find out if this rumor is >true and (if so) what the replacement is and how you work with it. > > Perhaps others on the list can expand on this rumor and tell me if I'm just blowing >smoke and spreading FUD. > > They say there are three signs of stress in your life. You eat too much junk food, >you drive too fast and you veg out in front of the TV. Who are they kidding? That >sounds like a perfect day to me! > Gordon Wolfe, Ph.D. (425)865-5940 > VM & Linux Servers and Storage, The Boeing Company > > > ---------- > > From: Werner Kuehnel > > Reply To: Linux on 390 Port > > Sent: Wednesday, February 5, 2003 3:42 AM > > To: [EMAIL PROTECTED] > > Subject: Re: Root almost filled on 3390-3 > > > > Wolfe, > > thanks for your reply. The du command was a great help in finding the culprit. > > There were two files in /tmp from the installation of a DB2 fixpack which used > > up a lot of space. Now we are at 40% and 870MB. > > However, I'd still like to know which directories can be moved to LVM managed > > space (only those which will not be accessed until LVM initialization). Is this > > usual to have parts of root fs in LVM space? In my opinion /var, /usr and /tmp > > would be good candidates, wouldn't they? > > Sorry for the dumb questions, but I'm just starting with Linux. > > > > Werner > > > > "Wolfe, Gordon W" wrote: > > > > > > What's on your root? And what's on the other disks? Do a "df" and tell us the >results. > > > > > > I've been running SLES7 for a year with root on a 750-cylinder minidisk and /usr >on a dedicated 3390-3 shared read-only, /home on a 500-cylinder minidisk and swap on >a v-disk. I've never filled up root. (Okay, so there was that incident with the TSM >client logs...)> > > > > > > Check your logs to be sure they aren't filling up space in /var/log. > > > > > > cd /var/log > > > du --max-depth=1 -h > > > > > > find out where your big usages are by CD'ing into various directories and trying >the du command above. I found that installing IBMJava2-1.4 used up about 350 megs! > > > > > > Do you have Oracle installed? Websphere? Those can be HUGE! > > > > > > They say there are three signs of stress in your life. You eat too much junk >food, you drive too fast and you veg out in front of the TV. Who are they kidding? >That sounds like a perfect day to me! > > > Gordon Wolfe, Ph.D. (425)865-5940 > > > VM & Linux Servers and Storage, The Boeing Company > > > > > > > ---------- > > > > From: Werner Kuehnel > > > > Reply To: Linux on 390 Port > > > > Sent: Tuesday, February 4, 2003 3:49 AM > > > > To: [EMAIL PROTECTED] > > > > Subject: Root almost filled on 3390-3 > > > > > > > > I've installed SLES7 (Beta version) onto one (of three) 3390-3 dasd. The root > > > > filesystem is now filled up to 92%. I'd like to have more freespace and wonder > > > > how to do this. > > > > Books say that root filesystem under LVM is not recommended. Are there at least > > > > some directories I can move (of course on the fly) from root filesystem to LVM > > > > space? > > > > Are there any recommendations/experiences how to split up root fs to more than > > > > one 3390-3 volume? > > > > Any hints are very welcome. > > > > > > > > Werner > > > > -- > > > > > > > > Werner Kuehnel > > > > IMD GmbH (Mannheimer Versicherung) > > > > Mannheim - Germany > > > > > > > > > > > > -- > > > > Werner Kuehnel > > IMD GmbH (Mannheimer Versicherung) > > Mannheim - Germany > > > > -- Werner Kuehnel IMD GmbH (Mannheimer Versicherung) Mannheim - Germany
