Resize the logical volume vo and its filesystem to 290 MB. Make sure that the filesystem contents remain intact.

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1. Extension process:
   —————————
   1- check for the lv space available
   # lvdisplay or lvs
   if the space is enough then
   # lvextend -l 100M -r /dev/vg_name/lv_name

   note 1: no need to extend the fs because the -r option in the previous cmd does the work needed for extending it
   note 2: no need to umount the fs during the extension process

   2- check for the vg space available
   # vgdisplay or vgs
   if the space is NOT enough, then you need to create a new partition
   # fdisk
   p –> n –> e –> default –> default –> default –> n –> l –> default –> default –> +100M –> t –> 8e –> w
   # partprobe
   # vgextend /dev/vg_name /dev/new_partition
   note 1: no need to create a new pv because the previous cmd do this automatically
   # lvextend -l 100M -r /dev/vg_name/lv_name
   note 2: no need to extend the fs because the -r option in the previous cmd does the work needed for extending it
   note 3: no need to umount the fs during the extension process
   ———————————————————————————————————————————————————————-
   Shrinking process:
   —————————
   1- unmount your file system
   # umount /mounted_path

   2- shrink your logical volume
   # lvreduce -L 100M -r /dev/vg_name/lv_name
   note 1: this cmd works only for ext file system family only
   note 2: no need to shrink the file system because -r option do the job

   3- remount your file system
   if its mounted on fstab –> mount -a
   if its manually mounted –> mount /dev/vg_name/lv_name /mount_path

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