Chapter 6 Managing the File System
Working With Disks
StorNext User’s Guide 112
1From the SNFS home page, choose Disks from the Config menu. The
Manage Disks screen (figure67) appears.
2Select from the File Systems drop-down menu the file system that
contains the disk you want to delete.
3Select from the Disks list the disk you want to delete.
4Click Delete. A message asks you to confirm that you want to delete
the disk.
5Click OK to proceed with the deletion. The Delete Disk status screen
appears.
6After the status screen indicates that the disk has been deleted, click
Close.
Defragmenting a Disk 6This procedure describes how to defragment a disk using the
snfsdefrag utility to relocate SNFS file data into a single, pre-allocated
extent. Reducing the number of extents in a file improves system
performance by minimizing disk head movement when I/O occurs. You
can defragment a single file or multiple files, perform a recursive
defragment on files in a directory, or defragment the entire file system.
1Log onto a metadata controller as root. The metadata controller is the
computer where the StorNext server (not the client) is installed.
2Do one of the following:
• To defragment a single file or a list of files, type:
/usr/cvfs/bin/snfsdefrag <filename> [filename ....]
• To perform a recursive defragment on files in a directory, type:
/usr/cvfs/bin/snfsdefrag -r <directory_name>
If the directory_name value is equal to the mount point, then the
entire StorNext file system is defragmented.
Caution: Deleting a d isk used in a stripe group results in a complete
loss of user data and requires re-making the file system.
For information on re-making the file system, refer to
Making or Unmaking a File System on page 105.