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The following commands will create the RAM disk, keep events on the hard drive, and ensure permissions are not lost. These commands should also need to be added to a script that runs at boot time. On Centos 6 /etc/rc.d/rc.local works well.
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mount -t tmpfs -o size=1000M tmpfs /media/ramdisk/
mkdir -p /media/ramdisk/nmis8/var
ln -s /data/nmis8/var/events /media/ramdisk/nmis8/var
/usr/local/nmis8/admin/fixperms.pl |
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When creating the RAM disk the size parameter may be a number expressed with the suffix k, m or g (kilo, mega, and giga). It may also be expressed with the % sign. For example if you'd like to allow the ramdisk to consume up to 25 percent of the available RAM the following technique could be used.
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Use the df command to confirm that the ramdisk was created.
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