When users are reporting the servers are slow or facing issues in the connection, few commands that will make quick understanding about the system, The first and for most is doing the connectivity check from the local machine(laptop or desktop), ping server name, If we are successfully able to get the ping results, Connect to the server and do the basic commands
TThere are several of methods to migrate from old to new storage, in this section we are going to migrate using pvmove for the migration, we use pvmove in physical server storage migration.
Step-byStep Storage Migration using LVM is the easy method to migrate from old to new storage, we can do to physical server as well as virtual server
lsblk command list all available device or a block devices. Also read the sysfs filesystem and udev db togather information.
Expect RAM disks prints in tree format. lsblk –help will show list of options that can be used.
by default the NAME,MAJ:MIN,RM,SIZE,RO,TYPE,MOUNTPOINT columns will be listed. we can also customize the menus. The lsblk command will be very helpful while we adding / removing the disk, to check mounted filesystem of the disks.