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|Transitioning From Oracle Solaris 10 to Oracle Solaris 11 Oracle Solaris 11 Information Library|
The file systems that are available in the Oracle Solaris 11 release are very similar to the Oracle Solaris 10 file systems.
Disk-based file systems – HSFS, PCFS, UDFS, UFS, and ZFS
Network-Based file systems – NFS and SMB
Virtual file systems – CTFS, FIFOFS, MNTFS, NAMEFS, OBJFS, SHAREFS, SPECFS, and SWAPFS
Temporary file system (TMPFS)
Loopback file system (LOFS)
Process file system (PROCFS)
The general file system differences are as follows:
CacheFS is not available in the Oracle Solaris 11 release.
ZFS is the default root file system.
UFS is a supported legacy file system, but it is not supported as a bootable root file system.
The legacy Solaris Volume Manager product is supported, but you cannot boot from a Solaris Volume Manager root device.
ZFS uses a separate ZFS volume for swap and dump devices. UFS can use a single slice for both swap and dump devices.
The root file system hierarchy is mostly identical to systems running Solaris 10 that have a ZFS root file system. A ZFS root pool contains a ZFS file system with separate directories of system-related components, such as etc, usr, and var, that must be available for the system to function correctly.
After a system is installed, the root of the Solaris file system is mounted, which means files and directories are accessible.
All subdirectories of the root file system that are part of the Oracle Solaris OS, with the exception of /var, must be contained in the same file system as the root file system.
During an Oracle Solaris 11 installation, a separate /var file system is created automatically for a global zone and a non-global zone.
In addition, all Oracle Solaris OS components must reside in the root pool, with the exception of the swap and dump devices.
A default swap device and dump device are automatically created as ZFS volumes in the root pool when a system is installed. You cannot use the same volume for both swap and dump devices. In addition, you cannot use swap files in a ZFS root environment. For more information, see Swap and Dump Device Configuration Changes.