Which statement correctly describes the difference between mdadm metadata versions 0.90 and 1.x?

Version 0.90 is the default for new arrays, while 1.x is deprecated.

Version 0.90 stores the superblock at the end of the device, while 1.x versions store it at the beginning or at a small offset.

Version 0.90 supports a 'homehost' field, while 1.x does not.

Version 0.90 supports devices larger than 2TB, while 1.x does not.

When adding a new disk to an existing RAID 5 array to increase its capacity, which mdadm command is used?

mdadm --create /dev/md0 --add /dev/sdd1

mdadm --insert /dev/md0 /dev/sdd1

mdadm --grow /dev/md0 --add /dev/sdd1

What is the primary purpose of a hot spare disk in a RAID array?

To store a backup of the array metadata

To provide additional storage capacity for the array

To automatically replace a failed disk and initiate a rebuild

To increase the read performance of the array

After creating a RAID array with mdadm, what must be done before the array can be used to store files?

Create a filesystem on the array device

Reboot the system to activate the array

Run mdadm --detail to verify the array

What is the correct mdadm command to remove a failed disk /dev/sdb1 from the RAID array /dev/md0?

mdadm --delete /dev/md0 /dev/sdb1

mdadm --remove /dev/md0 /dev/sdb1

mdadm --fail /dev/md0 /dev/sdb1

mdadm --detach /dev/md0 /dev/sdb1

LPI LPIC-3 High Availability and Storage Clusters

Domain 4Objective 2

364.2 Advanced RAID (weight: 2) LPIC-3-HIGH-AVAILABILITY Practice Questions (Page 5)

Part of the Topic 364: Single Node High Availability domain, which makes up ~27% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~9–16 in this domain), expect 2–4 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

10concepts

Questions 21–25

21foundation · easy
Which statement correctly describes the difference between mdadm metadata versions 0.90 and 1.x?
Select an answer first
22foundation · easy
When adding a new disk to an existing RAID 5 array to increase its capacity, which mdadm command is used?
Select an answer first
23foundation · easy
What is the primary purpose of a hot spare disk in a RAID array?
Select an answer first
24foundation · easy
After creating a RAID array with mdadm, what must be done before the array can be used to store files?
Select an answer first
25foundation · easy
What is the correct mdadm command to remove a failed disk /dev/sdb1 from the RAID array /dev/md0?
Select an answer first

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