Contains the object location table (OLT). The OLT, which referenced from the superblock is used to locate the other structural files.

Encapsulates the super-block and super-block replicas. Although the primary location of the super-block is known, the label file can be used to locate upper-block copies ifthere is structural damage to the filesystem.

Records device information such as volume length and volume label and contains pointers to other structural files.

Hold information on a per- fileset basis. This may include the inode of the fileset’s inode list file, the maximum number of inodes allowed, an indication of whether the filesystem supports large files and the inode number of quotas file if the filesetsupports quotas.

When a filesystem is created, there are two filesets, the structural fileset, whichdefines the file system structure and the primary fileset which contains user data.

Both the structural fileset and the primary fileset have their own inode lists which are stored in inode list files. Increasing the number of inodes involves increasing the size of the file after expanding the inode allocation unit file.

Hold the free inode map, extended operations map and a summary of the inode resources.

Indicates the allocation state of each AU by defining whether each AU is free allocated as a whole (no bitmaps allocated) or expanded, in which case the bitmaps associated with each AU determine which extents are allocated.

Contains the AU summary for each allocation unit, which contains the number of free extents of each size. The summary for an extent is created only when an allocation unit is expanded for use.

If the filesystem supports quotas, there is a quotas file, which is used to track the resources allocated to each user.

mount -v
mount -p

fstyp -v /dev/vx/dsk/appdg/samba_vol       (block device)
fstyp -v /dev/vx/rdsk/appdg/samba_vol      (raw device)