Device name format changes in RHEL 7 environments after encapsulation

This topic applies to Linux.

With RHEL 7, the format of volumes in the /etc/fstab file after root disk encapsulation has changed.

Table: Volume formats changes in RHEL 7 environments lists the changes in RHEL 7 environments.

Table: Volume formats changes in RHEL 7 environments

Before RHEL 7

With RHEL 7

Volume format:

/dev/vx/dsk/bootdg/<volume>

Volume format:

/dev/vx_dsk_bootdg_<volume>

Contents of /etc/fstab file where the rootdisk has two partitions, namely, / and swap:

# cat /etc/fstab
 
/dev/vx/dsk/bootdg/rootvol \
/    ext4 defaults 1 1
/dev/vx/dsk/bootdg/swapvol \
swap swap defaults 0 0
  
#NOTE: volume rootvol (/) \
encapsulated partition sda1
#NOTE: volume swapvol (swap) \
encapsulated partition sda2

Contents of /etc/fstab file where the rootdisk has two partitions, namely, / and swap:

# cat /etc/fstab
 
/dev/vx_dsk_bootdg_rootvol \
/    ext4 defaults 1 1
/dev/vx_dsk_bootdg_swapvol \
swap swap defaults 0 0
  
#NOTE: volume rootvol (/) \
encapsulated partition sda1
#NOTE: volume swapvol (swap) \
encapsulated partition sda2

Note:

Though the format of the device names in the /etc/fstab has changed, there is no change in the output of the mount utility. The mount utility still displays the mounted volumes in the old format.