What is file system in AIX?

What is file system in AIX?

The basic type of file system used by AIX® is called the journaled file system (JFS). This prevents damage to the file system when the system is halted abnormally. The AIX operating system supports multiple file system types including the journaled file system (JFS) and the enhanced journaled file system (JFS2).

How can I tell what filesystem AIX has?

Checking the automount attribute of file systems At boot time, AIX® attempts to check all the file systems listed in /etc/filesystems with the check=true attribute by running the fsck command.

How do I change file system in AIX?

Steps:

1. Take backup of the /testfs either locally or whichever the backtools you are using ( eg: TSM /netbackup)
2. Unmount the FS associated with the testlv_old ,here its “/testfs”
3. Change mount point name in /etc/filesystem.
4. Create new lv “testlv_new”
5. Create Filesystem with name “/testfs”

What commands AIX?

The which command takes a list of program names and looks for the files that run when these names are given as commands. The which command expands each argument, if it is aliased, and searches for it along the user’s path. The aliases and paths are taken from the . cshrc file in the user’s home directory.

What is VGDA in AIX?

VGDA (Volume Group Descriptor Area) It is an area on the hard disk (PV) that contains information about the entire volume group. There is at least one VGDA per physical volume, one or two copies per disk.

How mount NFS share in AIX?

Mounting the NFS filesystem on the client:

1. Verify if the NFS server has exported the directory. showmount -e
2. Create the mounting directory if not already exist. mkdir /local_directory.
3. Mount the remote directory on the client:
4. Confirm that the NFS filesystem has been mounted:

What is Mount point in AIX?

A mount point is a directory or file at which a new file system, directory, or file is made accessible. (dot dot) parent directory entry in the mounted-over directory. In order for the operating system to access the new file system, the mount point parent directory information must be available.

How do I change the file system name?

Rename a filesystem, or change a mount point

1. Create new mount point (mkdir /sapbackup)
2. Umount existing filesystem (umount /backup)
3. lvrename to change logical volume name (lvrename /dev/vgname/backuplv /dev/vgname/sapbackuplv)
4. Update /etc/fstab to point to the new location.
5. mount new filesystem (mount /sapbackup)

How do I list files in AIX?

Examples

1. To list all files in the current directory, type:
2. To display detailed information, type:
3. To display detailed information about a directory, type:
4. To list the files in order of modification time, type:
5. To display detailed information with expanded user and group name, type: ls -lX .profile.

What is the difference between JFS and jfs2 in AIX?

Enhanced Journaled File System (JFS2) is a file system that provides the capability to store much larger files than the existing Journaled File System (JFS). You can choose to implement either JFS or JFS2. JFS2 is the default file system in AIX® 6.1….JFS and JFS2 functions.

Functions	JFS2	JFS
Error logging	Yes	Yes