KVM18p2: Storage Pools LAB

# In The Name Of Allah .
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# Mon Dec 28 10:23:23 2020
# Written By : zer0err0r .
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# 18p2, Creating Storage Pools .

  # Directory Bsaed Pools .
    $ virsh pool-define-as dir_pool dir - - - - /home/zer0err0r/kvm_1
    $ virsh pool-build dir_pool 

    # Notice :
      = [pool-build] should create the dir if its not exist, And sets the correct SELinux context for you .
      = Without using this pool, You need to define SELinux context by yourself, And you need to create the dir too .
      = But in both cases, If you gonna use [~/some_dir], You need to let [others] to have the [x]_perm on your Home_dir 
        and thats to allow [qemu] user to access .
    

  # Partition Based Pools .
    $ virsh pool-define-as part_pool fs - - /dev/sdb1 - /home/zer0err0r/kvm_2
    $ virsh pool-define-as part_pool --type fs --source-dev /dev/sdc1 --target /home/zer0err0r/kvm_2
    $ virsh pool-build part_pool

    # As you see :
      = The using of dashes[-] depend on the pool type .
      = Each dash represent a specific configuration .
      = [/dev/sdb1] is the partition that we will use .

    # Partition based pool is better :
      = part_pool has a separated partition to store volumes instead of filling the main filesystem partition space .
      = You dont have to [mkdir] the mount point, And you dont have to configure [/etc/fstab] .
      = Even SELinux context will be configured for you .
      = Unlike the dir_pool which may fill your main filesystem partition space .
      = And if you used a separated partition for your volumes and you used a dir_pool, You need to configure the
        [/etc/fstab] file manually .


  # Pool management :
    $ virsh pool-start POOL_NAME
    $ virsh pool-autostart POOL_NAME
    $ virsh pool-autostart --disable POOL_NAME
    $ virsh pool-list --all
    $ virsh pool-info POOL_NAME
    $ virsh pool-edit POOL_NAME
    
    # Pool deletion :
      $ virsh pool-destroy POOL_NAME
      $ virsh pool-undefine POOL_NAME

    # Pool backup and restore :
      $ virsh pool-dumpxml > POOL_NAME.xml
      $ virsh pool-define POOL_NAME.xml

    # Volume creation :
      $ virsh vol-create-as POOL_NAME vm1.qcow2 10G --format qcow2
      = Nothing special here, Just change the POOL_NAME .

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# Peace Be Up0n Muhammed .