IBM
000-221 · Question #141
000-221 Question #141: Real Exam Question with Answer & Explanation
The correct answer is D. chvg -Qn datavg. The chvg command with the -Qn flag persistently disables quorum checking on a volume group, ensuring it remains online even when one disk in a mirrored pair fails.
Question
An LPAR is configured with strict logical volume mirroring across two disks for resilience. The administrator would like to ensure if one disk fails the volume group stays online. Which command will ensure that the datavg volume group stays online?
Options
- Avaryonvg -n datavg
- Bmirrorvg-Q-c 2 datavg
- Cmklvcopy -e m -s y (each logical volume name) 2
- Dchvg -Qn datavg
Explanation
The chvg command with the -Qn flag persistently disables quorum checking on a volume group, ensuring it remains online even when one disk in a mirrored pair fails.
Common mistakes.
- A. varyonvg -n applies a no-quorum override only at the moment the volume group is varied on and is not a persistent setting, so it does not protect against a runtime disk failure.
- B. mirrorvg creates a mirror copy of the volume group but does not modify the quorum setting, and -Q is not a valid flag for the mirrorvg command in AIX.
- C. mklvcopy with -e m -s y controls mirror write consistency and inter-disk allocation policies for individual logical volumes, not the volume group quorum behavior.
Concept tested. AIX volume group quorum configuration using chvg
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