Which two statements about the yum-fs-snapshot plugin are true?
A.
A it automatically creates file system snapshots for all file systems before running a yum transaction.
B.
it can be used to manually create file system snapshots before running a yum transaction.
C.
it can be used when the root file system is deployed onbtrfs.
D.
it can be used when the root file system is deployed on anVLMvolume.
E.
it is enabled by default for all types of root file systems.
Explanation:
Reference:http://man7.ora/linux/man-paaes/man1/vum-fs-snapshot.1.html
http://johnkk84.blogspot.com/2014/07/yum-fs-snapshoot.html
A its create specific filesystem configured in /etc/yum/pluginconf.d/fs-snapshot.conf
B its create automaticcally
C,D
C,D 100% sure
fs-snapshot
The package name is yum-plugin-fs-snapshot.
This plug-in allows you to create a snapshot of a file system before updating your system. If
you decide that you do not want to keep the changes you can roll back to the snapshot The , you can roll back to the snapshot. The root file system must be created on a logical volume or on a Btrfs volume