Exam EX200 topic 1 question 18 discussion

Actual exam question from RedHat's EX200

Question #: 18
Topic #: 1

SIMULATION -
Create a volume group, and set 8M as a extends. Divided a volume group containing 50 extends on volume group lv (lvshare), make it as ext4 file system, and mounted automatically under /mnt/data. And the size of the floating range should set between 380M and 400M.

Show Suggested Answer

Suggested Answer: See explanation below.
# fdisk
# partprobe
# pvcreate /dev/vda6
# vgcreate -s 8M vg1 /dev/vda6 -s
# lvcreate -n lvshare -l 50 vg1 -l
# mkfs.ext4 /dev/vg1/lvshare
# mkdir -p /mnt/data
# vim /etc/fstab
/dev/vg1/lvshare /mnt/data ext4 defaults 0 0
# mount -a
# df -h

by RedQuasar at Dec. 12, 2020, 9:16 p.m.

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RedQuasar

Highly Voted 2 years ago

vgcreate -s 8M vg02 /dev/sda3 lvcreate -l 50 -n lv02 mkfs.ext4 /dev/mapper/vg02_lv02 mkdir /mnt/data3 lsblk -pf (UUID=…457f-446bbb805753) echo “UUID=…457f-446bbb805753 /mnt/data3 ext4 defaults 0 0” >> /etc/fstab

upvoted 5 times

badguy001djh

1 year, 4 months ago

Your lvcreate command lacks VG option.

upvoted 6 times

STFN2019

1 year, 3 months ago

Yep second line should be: lvcreate -l 50 -n lv02 vg02

upvoted 4 times

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kitkat

Most Recent 6 months, 2 weeks ago

We need to set partition size between 380M and 400M

upvoted 1 times

kitkat

6 months, 2 weeks ago

50 extends of 8MB each will be close to 400MB.

upvoted 3 times

kitkat

6 months, 2 weeks ago

Which means we do not need to define anything special setting vgcreate to 8M and lvcreate extends to 50 is doing what question asks for.

upvoted 2 times

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kenkct

10 months ago

sudo su lsblk -psf pvcreate /dev/sd[] vgcreate -s 8M vg1 /dev/sd[] lvcreate -l 50 -n lvshare vg1 lsblk -psf mkfs.ext4 /dev/mapper/vg1-lvshare mkdir -p /mnt/data echo '/dev/mapper/vg1-lvshare /mnt/data ext4 defaults 0 0' >> /etc/fstab systemctl daemon-reload mount -a

upvoted 2 times

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vira5489

1 year, 1 month ago

-- lets say we are going to work on /dev/vda3 , make sure this disk has no mount point,if any than unmount them ex. umount /mnt/data vgcreate -s 8M vg1 /dev/vda3 lvcreate -n lvshare -l 50 vg1 mkfs.ext4 /dev/vg1/lvshare mkdir -p /mnt/data vim /etc/fstab /dev/vg1/lvshare /mnt/data ext4 defaults 0 0 mount -a partprobe df -h

upvoted 3 times

xXxM__JxXx

9 months ago

hi just want to ask. what part of the command line addresses this requirement And the size of the floating range should set between 380M and 400M

upvoted 3 times

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