SIMULATION -
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.
SIMULATION -
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.
To create a volume group, set an extent size of 16MB, and create a logical volume with 50 extents formatted as ext4, and then mount it automatically under /mnt/data, follow these steps: First, create the physical volumes: # pvcreate /dev/sda7 /dev/sda8. Create the volume group with 16MB extent size: # vgcreate -s 16M vg1 /dev/sda7 /dev/sda8. Create the logical volume with 50 extents: # lvcreate -l 50 -n lv01 vg1. Format the logical volume as ext4: # mkfs.ext4 /dev/vg1/lv01. Next, obtain the UUID of the logical volume for /etc/fstab: # blkid /dev/vg1/lv01. Create the mount point: # mkdir -p /mnt/data. Add the volume to /etc/fstab for automatic mounting: UUID=<UUID> /mnt/data ext4 defaults 0 0, making sure to replace <UUID> with the actual UUID value you obtained. Lastly, mount all filesystems: # mount -a. Verify with # mount.
Assuming /dev/sda1 and /dev/sda2 partitions already exist: # pvcreate /dev/sda1 /dev/sda2 # vgcreate -s 16M vg01 /dev/sda1 /dev/sda2 # lvcreate -l 50 -n lv01 vg01 # mkfs.ext4 /dev/vg01/lv01 # mkdir -p /mnt/data # blkid /dev/vg01/lv01 copy the UUID of /dev/vg01/lv01 in the output of that command. # vim /etc/fstab UUID="paste the UUID of /dev/vg01/lv01 here" /mnt/data ext4 defaults 0 0 # mount -ahttps://www.examtopics.com/exams/redhat/ex200/view/3/#
ERRATA: vgcreate -s 16M vg01 /dev/sda1 /dev/sda2 lvcreate -l 50 -n lv01 vg01 mkfs.ext4 /dev/mapper/vg01_lv01 lsblk -pf (UUID=dde8c40f-fa74-4290-8ff9-252c614e8307) echo “UUID=dde8c40f-fa74-4290-8ff9-252c614e8307 /mnt/data xfs defaults 0 0” >> /etc/fstab
don't forget: mkdir /mnt/data
it should be ext4 instead of xfs in /etc/fstab
This question have no sense only for me ? What means "And divided a volume group containing 50 extends on volume group lv".... Divided a volume group in another volume group !? Moreover the size of the volume group is not specified (50 extends or more !?), the size of the logical volume neither..
lvcreate -n lv1 -L 50 vg1
vgcreate -s 16M vg01 /dev/sda1 /dev/sda2 lvcreate -l 50 -n lv01 vg01 mkfs.xfs /dev/mapper/vg01_lv01 lsblk -pf (UUID=dde8c40f-fa74-4290-8ff9-252c614e8307) echo “UUID=dde8c40f-fa74-4290-8ff9-252c614e8307 /mnt/data xfs defaults 0 0” >> /etc/fstab
why question statement are so confusing?
assume that /dev/sdb2 and /dev/sdb3 were created (lsblk to verify it) #pvcreate /dev/sdb{2,3} #pvdisplay /dev/sdb* (verify) #vgcreate VG01 --physicalextentsize 16M /dev/sdb{2,3} #vgdisplay /dev/VG01 (verify) #lvcreate --extents 50 --name LV01 VG01 #lvdisplay /dev/VG01 (verify) #blkid /dev/VG01/LV01 (get UUID=XXX-XX-XX) #mkdir -p /mnt/data #echo "UUID=XXX-XX-XX /mnt/data ext4 defaults 0 0" | tee -a /etc/fstab #mount -a
mkfs before getting UUID with help of blkid is missing. #lvdisplay /dev/VG01 (verify) #mkfs.ext4 /dev/VG01/LV0 #blkid /dev/VG01/LV01 (get UUID=XXX-XX-XX)
Where do we get UUID value?
just blkid
run lsblk -fs
what is the correct lvcreate -l 50 -n lv01 vg01 or lvcreate -n lv1 -L 50 vg1
the -L option to set the LV size in bytes or the -l option to set the LV size in extents
lsblk -pfs (locate the 2 empty HDD, sdb sdc) sudo pvcreate /dev/sdb /dev/sdc (2 empty HDD) sudo vgcreate -s 16M vg01 /dev/sdb /dev/sdc sudo lvcreate -l 50 -n lv01 vg01 sudo mkfs.ext4 /dev/mapper/vg01-lv01 lsblk -pfs sudo mkdir -p /mnt/data sudo su echo "UUID=XXXX-XXXX-XXXX /mnt/data ext4 defaults 0 0" >> /etc/fstab mount -a
Assuming dev/sda1 exist #lsblk -t check #vgcreate -s 16M testvg /dev/sda1 #vgdisplay #lvcreate -l 50 -n testlv testvg #lvdisplay #mkfs.ext4 /dev/test/test1 #mkdir /mnt/data #vi /etc/fstab #/dev/test/test1 /mnt/data ext4 defaults 0 0 #mount -a #df -hT - to verify #
I don't understand why you used 2 "/dev/" instead of just one.