Monday, April 4, 2011

Maximum file Size limitation on Sun Solaries 10

Maximum file Size limitation on Sun Solaries 10

In Sun Solaris, UFS file system default maximum file size is 2GB which restricts the maximum size of any file will be restricted to 2GB. This can cause problems with applications like Databases.

Solaris 10 by default however sets the Maximum file Size to unlimited on the UFS File System.

To check the limits (if any) set on the File System try

ROOT# ulimit -a | grep file

To Set unlimited maximum filesize using ulimit

ROOT# ulimit unlimited

Edit the /etc/default/login file

Edit the /etc/default/login file using your favorite editor and uncomment the line “ULIMIT” and set the value to “0″ as follows:


Remount the File System with “nolargefiles” option

solarisserver# mount -F ufs -o remount,larefiles /dev/dsk/c0t0d0s7 /export/home

Edit /etc/vfstab

To preserve the setting at system boot, edit the /etc/vfstab and add “largefiles” under the option tab for the file system as follows. The next time the system reboots, the largefiles option is set.

/dev/dsk/c0d0s7 /dev/rdsk/c0d0s7 /export/home ufs 2 yes largefiles

This should fix the Maximum file size issue in UFS File System in Sun Solaris.

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