Mirror query

[nyck]

Hello,

If my rootvg is mirrored how can I tell which is the primary mirror:-

lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk1 active 546 105 13..00..00..00..92
hdisk0 active 546 42 00..00..00..00..42

I'm assuming from the above that hdisk1 is the primary as it's first in the list and hdisk0 is the mirror?

Cheers

Nick

 

[DukeSSD]

Given the total PPs are the same but the free PPs are different, I think we have two questions...

If my rootvg is mirrored

Check out:

 lsvg -l rootvg

If it is mirrored then each PV should have twice as many PPs as LPs

(might just be a dump device - they should not be mirrored. if you have one with a mirrored rootvg, then you may as well have another equal sized one on the other disk)

Then for the:

how can I tell which is the primary mirror

There isn't one. If they are mirrored then they are exactly the same. As long as both are in the boot list then you have nothing to worry about...

Mirroring rootvg VG on AIX

HTH