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Exam EX200 topic 1 question 80 discussion

Actual exam question from RedHat's EX200
Question #: 80
Topic #: 1
[All EX200 Questions]

SIMULATION -
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.

Show Suggested Answer Hide Answer
Suggested Answer: See explanation below.
lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common
by adolfoale at Jan. 17, 2021, 6:55 p.m.

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adolfoale
Highly Voted 3 years, 8 months ago
Also this option is valid: # lvextend -r -L 190M /dev/VGSRV/common
upvoted 9 times
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PENNSHARK
Most Recent 8 months, 3 weeks ago
# Extend the Logical Volume to 190 MB lvextend -r -L 190MB /dev/VGSRV/common # Create a Mount Point mkdir /mnt/common # Create a Filesystem mkfs.ext4 /dev/VGSRV/common # Update /etc/fstab echo "/dev/mapper/VGSRV-common /mnt/common ext4 defaults 0 0" >> /etc/fstab # Mount the Logical Volume mount -a # Reload systemd systemctl daemon-reload # Check the Mount mount
upvoted 1 times
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sovafal192
2 years ago
###* mount the existing volume ###* if volume is ext4! mkdir /common nano /etc/fstab: /dev/mapper/vgsrv-common /common ext4 defaults 1 2 mount -a ###* Expand 128M -> 190M lvextend -L 190M /dev/mapper/vgsrv-common or lvextend -L +68M /dev/mapper/vgsrv-common after lvextend we need to run xfsgrow or resize2fs in case of ext*
upvoted 2 times
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hareshrajpara
3 years, 5 months ago
# lvextend -rv -L 190M /dev/VGSRV/common
upvoted 4 times
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helpUs
3 years, 6 months ago
I don't know this answer. why 190M? definition size is 128M. so extend size 68M. plz help me. why this answer is 190M?
upvoted 1 times
ArchBishop
3 years, 4 months ago
you can either use: lvextend -r L 190M /path/to/lvm OR lvextend -r L +62M /path/to/lvm The first option specifies the exact amount that is being requested (190), while the second options is adding the difference (190-128=62) to meet the requested storage amount.
upvoted 6 times
ArchBishop
3 years, 4 months ago
Apologies, my 'L' requires a switch in front: `lvextend -r -L [...]`
upvoted 2 times
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