000-221 · Question #120
An administrator wants to reorganize some of the logical volumes in the datavg volume group. What TWO things must the administrator verify before starting the reorganization? (Select 2)
The correct answer is B. At least one free physical partition exists. D. The logical volumes being reorganized are relocatable. Before running reorgvg, at least one free physical partition must exist for data movement, and all target logical volumes must have their relocatable flag enabled.
Question
An administrator wants to reorganize some of the logical volumes in the datavg volume group. What TWO things must the administrator verify before starting the reorganization? (Select 2)
Options
- AEnough free physical partitions exist to accommodate the largest logical volume being reorganized.
- BAt least one free physical partition exists.
- CThat none of the logical volumes contain a paging space.
- DThe logical volumes being reorganized are relocatable.
- EQuorum has been disabled for the volume group.
- FThe volume group descriptor area (VGDA) has room to expand.
- GThat any raw logical volumes being re-organized are closed.
How the community answered
(31 responses)- A3% (1)
- B81% (25)
- C10% (3)
- E3% (1)
- F3% (1)
Why each option
Before running `reorgvg`, at least one free physical partition must exist for data movement, and all target logical volumes must have their relocatable flag enabled.
Only a single free physical partition is required as a working buffer; `reorgvg` does not require contiguous free space equal to the size of the largest logical volume being moved.
The `reorgvg` command reorganizes physical partition placement by moving data between physical volumes, which requires at least one free physical partition to serve as a temporary landing area during the relocation process.
Paging space logical volumes are not a blocking concern for `reorgvg` initiation; the requirement that applies to paging is that raw logical volumes being reorganized must be closed, which is covered separately.
Each logical volume has a relocatable attribute that can be set to yes or no; if a logical volume's relocatable flag is set to no, `reorgvg` will skip it, so the administrator must confirm it is set to yes for the intended LVs before starting reorganization.
Quorum settings affect whether a volume group stays online when disks fail and have no bearing on the prerequisites for running a reorganization.
The VGDA size is a concern when adding new logical volumes or physical volumes to a group, not a prerequisite for reorganizing existing logical volumes.
Closing raw logical volumes before reorganization is a best practice to avoid data corruption, but the two mandatory prerequisites identified by IBM for `reorgvg` are free physical partitions and relocatable logical volumes.
Concept tested: AIX reorgvg prerequisites - free PPs and relocatable LVs
Source: https://www.ibm.com/docs/en/aix/7.3?topic=r-reorgvg-command
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