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Exam 201-450 topic 1 question 14 discussion

Actual exam question from LPI's 201-450
Question #: 14
Topic #: 1
[All 201-450 Questions]

Which command is used to make an exact copy, at a single point in time, of a logical volume while still allowing the original logical volume to be updated?

  • A. lvcclone
  • B. lvcreate
  • C. lvm2
  • D. lvsnap
  • E. lvsnapshot
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Suggested Answer: B 🗳️
Community vote distribution
B (100%)

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debloid
8 months ago
Selected Answer: B
lvcreate -L size -s -n snapname origlv
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chiaseed
1 year, 6 months ago
Selected Answer: B
I vote for B. There are no lvcclone, lvm2, lvsnap, lvsnapshot commands.
upvoted 2 times
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castor
1 year, 10 months ago
B is correct
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serlan
2 years, 4 months ago
LVM Snapshots Snapshots One of the nicest features of LVM is the possibility of taking snapshots of volumes. A snapshot is a virtual copy of the volume to enable easy backups. LVM snapshots use a strategy called "copy on write". This means that the snapshot logical volume only saves data blocks from the original logical volume that are changed in the original logical volume. To do so the logical volume manager first reads the (unchanged) data block on the original and than writes the data block to the snapshot. On filesystems with many changes (e.g. databases) this can lead to performance issues. The -s option in the lvcreate command specifies that the newly created logical volume is a snapshot. # lvcreate -L 50M -s -n snapshot0 /dev/volume01/lvol0
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RSV4
3 years, 9 months ago
I'm a bit confused about this, because to do a full clone of a LV you can use: lvcreate --snapshot --name <the-name-of-the-snapshot> --size <the size> /dev/<volume-group>/<logical-volume> This will create a Snapshot but to clone it on another LV would need the "dd" command additionally.... So to create a snapshot (if this is meant by "Clone") you might use lvcreate. Anyone here with knowhow in GV/ LV/ PV?
upvoted 1 times
mira_
3 years, 4 months ago
there is no needed for `dd`. LVM, Logical Volume Management, was instructed with `--snapshot` to also deal with content on the PE, Physical Extent.
upvoted 1 times
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milan92stankovic
4 years, 1 month ago
B - 100%
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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