[root@cps4 ~]# parted /dev/sda GNU Parted 2.1 Using /dev/sda Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Model: LSI 9750-8i DISK (scsi) Disk /dev/sda: 12.0TB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags (parted) mklabel gpt Warning: The existing disk label on /dev/sda will be destroyed and all data on this disk will be lost. Do you want to continue? Yes/No? Yes (parted) mkpart primary 0 -0 Warning: The resulting partition is not properly aligned for best performance. Ignore/Cancel? Cancel (parted) mkpart primary ext3 1 -1 (parted) print Model: LSI 9750-8i DISK (scsi) Disk /dev/sda: 12.0TB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 12.0TB 12.0TB primary [root@cps4 ~]# mkfs -t ext3 /dev/sda1 mke2fs 1.41.12 (17-May-2010) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 732422144 inodes, 2929670656 blocks 146483532 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 89407 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544, 1934917632, 2560000000 Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 36 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override. [root@cps4 ~]# tune2fs -c0 -i0 /dev/sda1 tune2fs 1.41.12 (17-May-2010) Setting maximal mount count to -1 Setting interval between checks to 0 seconds
As root, on the server running mailman, run:
/usr/lib/mailman/bin/list_members -f <listname>
If after installing a new drive in a raid, you get a message that looks like this:
//server> info c10 Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ------------------------------------------------------------------------------ u0 RAID-5 REBUILD-PAUSED 0% - 64K 1862.61 OFF OFF u1 RAID-5 OK - - 64K 931.303 ON OFF Port Status Unit Size Blocks Serial --------------------------------------------------------------- p0 OK u0 465.76 GB 976773168 WD-WCAPW2109877 p1 OK u0 465.76 GB 976773168 WD-WCAPW2283896 p2 OK u0 465.76 GB 976773168 WD-WCAPW1745426 p3 OK u0 465.76 GB 976773168 WD-WCAPW2222501 p4 DEGRADED u0 465.76 GB 976773168 WD-WMAYP5244596 p5 OK u1 465.76 GB 976773168 WD-WMAYP2574338 p6 OK u1 465.76 GB 976773168 WD-WCAPW5103350 p7 OK u1 465.76 GB 976773168 WD-WCAPW5251276
Quit tw_cli and run this from the command line:
[~]# ./tw_cli sched rebuild c10 enable
The raid should then start rebuilding immediately.
I think you could also run this from inside the tw_cli program, but I didn’t try it.
/c10 set rebuild=enable
Matt requested that /proc/sys/vm/overcommit_memory is set to 2 on some nodes. To do this, edit /etc/sysctl.conf. To the end of the file, add this line:
vm.overcommit_memory = 2
To make it take effect without rebooting, run:
sysctl -p
To determine which version of a python package using, import the package and then check the version. Something like this:
>>> import matplotlib >>> matplotlib.__version__ '1.2.0'
We were missing the tkinter package on some of our systems and this was causing a problem with matplotlib. You could see the error by running these commands:
import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt
Traceback (most recent call last):
File "", line 1, in
File "/usr/lib64/python2.6/site-packages/matplotlib/pyplot.py", line 97, in
_backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
File "/usr/lib64/python2.6/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup
globals(),locals(),[backend_name])
File "/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_tkagg.py", line 11, in
import matplotlib.backends.tkagg as tkagg
File "/usr/lib64/python2.6/site-packages/matplotlib/backends/tkagg.py", line 2, in
from matplotlib.backends import _tkagg
ImportError: cannot import name _tkagg
The solution was to install the tkinter package (yum install tkinter) and then recompile matplotlib so that it used tkinter.
$ python setup.py build $ python setup.py install
After that, the same commands as above worked fine.
To determine the version of matplotlib, you can either look in /usr/lib64/python26/site-packages for the matplotlib egg file (the version should be in the name of the file) or import the module in python itself.
[ ~]$ python Python 2.6.6 (r266:84292, Aug 28 2012, 10:55:56) [GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import matplotlib >>> matplotlib.__version__ '0.99.1.1' >>>
This is the default version get with RHEL6. To use a newer version of matplotlib, remove the python-matplotlib and seekwatcher packages. Download the latest matplotlib and install that.
[ matplotlib-1.2.0]# python setup.py build [ matplotlib-1.2.0]# python setup.py install
The run the check again and you should see the newer version being loaded.
[ matplotlib-1.2.0]# python Python 2.6.6 (r266:84292, Aug 28 2012, 10:55:56) [GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import matplotlib >>> matplotlib.__version__ '1.2.0'
I was getting this error in my log files:
dovecot: IMAP(user): Time just moved backwards by 1 seconds. I'll sleep now until we're back in present. http://wiki.dovecot.org/TimeMovedBackwards: 1 Time(s)
Looking at the website that was linked in the error message (very helpful), the solution was to edit /etc/ntp.conf and add the following:
# Added following to get rid of dovecot "Time moved backwards" error tinker step 0
Restart ntpd and after two days the error stopped showing up in my logs. Yay!
The NVIDIA linux driver cannot be installed when the system is using the nouveau driver. The nouveau driver has been installed on all of the systems I’ve set up so far. To use the nvidia driver, do the following:
1. Edit /etc/grub.conf and add rdblacklist=nouveau vga=791 to the end of the kernel line.
2. yum remove xorg-x11-drv-nouveau
3. Edit /etc/inittab to change the runlevel to boot to from 5 to 3.
4. Create the file /etc/modprobe.d/blacklist-nouveau.conf and in it, put the following line:
blacklist nouveau
5. Reboot
6. Install the Nvidia driver and make sure to run the nvidia config in the last step.
7. Test it out by either rebooting or running init 5.
RHEL6 seems to prefer to use UUIDs in /etc/fstab instead of device names. So, will want to do something like this to get the uuid.
[root@server]# blkid|grep sda1 >> /etc/fstab
This then gets added to /etc/fstab.
/dev/sda1: UUID=”a7a23967-f2c5-43a7-9245-270a818b6106″ SEC_TYPE=”ext2″ TYPE=”ext3″
Edit the line so it looks like this:
UUID=a7a23967-f2c5-43a7-9245-270a818b6106 /local/s13 ext3 defaults 1 2
Install epel repo to download some needed packages:
http://mirror.chpc.utah.edu/pub/epel/6/i386/repoview/epel-release.html
Packages want to get from epel:
patchy
cernlib-2006
(will also get xbae)
From this website, download:
Manual
Makefile
isajet.car
isared.tar.gz
Unzip, but don’t untar the isared.tar.gz file.
The cernlib from the epel repo puts the files we are concerned about in /usr/lib64/cernlib/2006-g77/lib. However, it puts a version number on the libraries we want to use and this will cause an error in our Makefile. So, in /usr/lib64/cernlib/2006-g77/lib, make the following links:
ln -s libpacklib.so.1 libpacklib.so ln -s libpdflib804.so.2 libpdflib804.so ln -s libmathlib.so.2 libmathlib.so ln -s libkernlib.so.1 libkernlib.so
Next, edit the Makefile with our info. Here is what the one I used looked like:
# Do not change this -- you will break everything. SHELL = /bin/csh ########## Installation parameters ##################################### # Some versions of make (e.g. Linux) treat inconsequential warnings # as errors and stop. Ignore all errors; comment out if possible: ##.IGNORE: # Name for temporary subdirectory. This will be deleted and # recreated: MAKETMP = ./MakeTmpDir # Link with CERN libraries. This is recommended for HP, IBMRT, or # LINUX to get date and time information but is not required: ##CERN = NOCERN CERN = CERN # Directories for Cernlib, terminated with a /. These must be set # if you select CERN or PDFLIB: CERNDIR = /usr/lib64/cernlib/ CERNBIN = $(CERNDIR)/bin/ CERNLIB = $(CERNDIR)lib/ CERNLIB2 = $(CERNDIR)2006-g77/lib/ # PDFLIB support. PDFLIB (part of the CERN library) contains many # partion distributions but produces a larger executable image: PDFLIB = #PDFLIB = PDFLIB # RANLUX support. RANLUX provides better random numbers than the # standard RANF, and each seed gives an independent sequence. It is # more difficult to restart and slightly slower. RANLUX = RANLUX #RANLUX = NORANLUX # Computer type. Most only differ in minor ways, e.g., the system # clock interface. Uncomment the right one: # ANSI ANSI Fortran # DECS DECStation with Ultrix # HPUX HP/700 with HPUX # IBMRT IBM RS/6000 with AIX # LINUX PC with LINUX and f2c/gcc or g77 or Absoft f77 # OSF Digital OSF on Alpha processor # SGI Silicon Graphics with IRIX # SUN Sparc or PC with Solaris #MACHINE = ANSI #MACHINE = DECS #MACHINE = HPUX #MACHINE = IBMRT MACHINE = LINUX #MACHINE = OSF #MACHINE = SGI #MACHINE = SUN # Fortran 77 compiler. #F77 = f77 # For HPUX; note that f77 on HPUX is brain dead. fort77 is also an # alternate f2c/gcc interface on Linux: #F77 = fort77 # GNU Fortran compiler #F77 = g77 F77 = /usr/bin/g77 # Fortran compile flags: Want -c, highest safe optimization, all # variables static, and postpended underscore for Cernlib compatibility. # Uncomment the right one or make your own: # DECS #FFLAGS = -c -O -static -w # HPUX, -O is broken #FFLAGS = -c -O2 -K +ppu -w # IBMRT #FFLAGS = -c -O -qextname -w # LINUX with f2c/gcc or g77. The -fno-silent displays progress... FFLAGS = -c -O -fno-automatic -fno-silent # LINUX with Absoft Fortran #FFLAGS = -c -O -w -f -s # OSF #FFLAGS= -c -O -w # SGI #FFLAGS = -c -O -static -w # SUN - the second option traps floating errors #FFLAGS = -c -O -w #FFLAGS = -c -O -w -fnonstd -ftrap=common # Use fsplit or CERN's fcasplit to split the whole Fortran source into # individual subroutines: #FSPLIT = $(CERNBIN)fcasplit #FSPLIT = fsplit FSPLIT = /usr/bin/fcasplit # Link command for Fortran, c.f. $(F77): #LINK = f77 #LINK = fort77 #LINK = g77 LINK = $(F77) # Extra libraries (e.g. Cernlib) and flags for link. If you want # PDFLIB support, you must also define $(PDFLIB) above. The Zebra # version requires libpacklib.a. #LFLAGS = #LFLAGS = -L$(CERNLIB) -lmathlib -lkernlib #LFLAGS = -L$(CERNLIB) -lpdflib804 -lmathlib -lkernlib LFLAGS = -L$(CERNLIB) -L$(CERNLIB2) -lpdflib804 -lpacklib -lmathlib -lkernlib # Ranlib command if required (it is for Sun 4.x and Linux): RANLIB = ranlib #RANLIB = $(ECHO) # Name for this Makefile: MAKEFILE = Makefile # Patchy commands. YPATCHY can be either ypatchy or nypatchy, # perhaps with a full path. A temporary cradle file YCRADLE is required; # it is deleted and recreated: #YPATCHY = $(CERNBIN)ypatchy #YPATCHY = $(CERNBIN)nypatchy YCRADLE = ./tmpcradle.cra YPATCHY = /usr/bin/nypatchy # Echo command. /bin/echo works on most (all?) systems; plain echo # fails on AIX 4.1: ECHO = /bin/echo # Remove command: RM = /bin/rm # Parameters to use ISATOOLS and ISAFLAVR. Note ISAFLAVR does not # create a separate library. ISATOOLS = ISATOOLS #ISATOOLS = LIBTOOLS = -lisared #LIBTOOLS = ISAFLAVR = ISAFLAVR #ISAFLAVR = ########## End of installation parameters ##############################
Next make isatools.
[root@higgs isajet]# make isatools
Takes a while to run. This creates the file libisared.a.
Next run make.
[root@higgs isajet]# make
This should produce the following executables: isajet.x, isasusy.x and isasugra.x. You can run make clean to get rid of the temporary files.