Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

A Linux administrator notices unexpected I/O latency on a storage server and inspects the software-RAID status:

# cat /proc/mdstat
Personalities : [raid1] [raid5] [raid6]
md1 : active raid5 sda1 sdb1 sdc1
      976630592 blocks super 1.2 level 5, 64k chunk, algorithm 2 [3/2] [U_U]
      [=>...................]  recovery =  9.3% (90965760/976630592) finish=145.7min speed=110213K/sec
unused devices: <none>

Based on the bracketed information shown for md1, what is the current state of the array?

  • The array is being converted from RAID 5 to RAID 6; no disk loss has occurred.

  • The array has been stopped by the kernel and is no longer mounted.

  • All three disks are online and fully synchronized, indicating a healthy array.

  • One of the three member disks has failed or is missing, so the RAID-5 array is degraded and is currently rebuilding.

CompTIA Linux+ XK0-006 (V8)
System Management
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