Originally posted by: SystemAdmin

last time we replaced a bad disk I ran into this problem (once we replaced the disk)

mirrorvg vg02 hdisk8
0516-1119 mirrorvg: Not enough free physical partitions to satisfy request.
0516-1200 mirrorvg: Failed to mirror the volume group

It seems the disk was mklvcopy'd not mirror'd. Anyway that was last time .. now we have a new failed disk and I just want to know what to do better this time!

how do I know if it was mirror'd or mklvcopy'd ? So I know what to do to recreated once the disk is replaced.

btw ... i was nowhere near when this was done ... that admin is long moved on

This time hdisk3 is bad

#uname -a
AIX <sanitized> 3 4 000169564C00

lsvg -p vg01
vg01:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk1 active 537 0 00..00..00..00..00
hdisk7 active 537 0 00..00..00..00..00
hdisk3 active 1084 373 89..00..38..29..217
hdisk9 active 1093 432 91..15..77..30..219

lsvg -l vg01
vg01:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
lvol1 jfs 640 1280 4 open/syncd /iidata1
lvol9 jfs 141 282 2 open/syncd /iilog1
lvol7 jfs 125 250 2 open/syncd /iiapplic1
lvol3 jfs 63 126 2 open/syncd /supply/applic
lvol6 jfs 125 250 2 open/syncd /supply/data
loglv00 jfslog 1 2 2 open/syncd N/A
paging00 paging 128 256 2 open/syncd N/A

lslv -l gives
lvol1:/iidata1
PV COPIES IN BAND DISTRIBUTION
hdisk1 537:000:000 19% 108:107:107:107:108
hdisk7 537:000:000 19% 108:107:107:107:108
hdisk3 128:000:000 71% 000:091:037:000:000
hdisk9 078:000:000 100% 000:078:000:000:000
lvol9:/iilog1
PV COPIES IN BAND DISTRIBUTION
hdisk3 141:000:000 100% 000:000:141:000:000
hdisk9 141:000:000 100% 000:000:141:000:000
lvol7:/iiapplic1
PV COPIES IN BAND DISTRIBUTION
hdisk3 125:000:000 100% 000:125:000:000:000
hdisk9 125:000:000 100% 000:125:000:000:000
lvol3:/supply/applic
PV COPIES IN BAND DISTRIBUTION
hdisk3 063:000:000 100% 000:000:000:063:000
hdisk9 063:000:000 100% 000:000:000:063:000
lvol6:/supply/data
PV COPIES IN BAND DISTRIBUTION
hdisk3 125:000:000 100% 000:000:000:125:000
hdisk9 125:000:000 100% 000:000:000:125:000
loglv00:N/A
PV COPIES IN BAND DISTRIBUTION
hdisk9 001:000:000 100% 000:001:000:000:000
hdisk3 001:000:000 100% 000:001:000:000:000
paging00:N/A
PV COPIES IN BAND DISTRIBUTION
hdisk3 128:000:000 0% 128:000:000:000:000
hdisk9 128:000:000 0% 128:000:000:000:000
Am I going to have problems again?

Originally posted by: orphy

If I'm reading right, you are trying to mirror vg02 to hdisk8. As the mirrorvg indicates, you don't have enough space in hdisk8 to hold a another mirror copy of vg02. You'll have to find a bigger disk for it or that you'll have to manually pick the LVs to mklvcopy in vg02 over to hdisk8.

The real issue here, however, is that you are listing vg01 so I'm not sure how we can look into this further for you?!?!?!

And I can't help but to ask why you put a paging space in vg01? They should normally be in rootvg.
Orphy

Originally posted by: SystemAdmin

that was last time's problem ( vg02 & hdisk8 )... I want to make sure I don't have the same problem this time .. this time the disk is hdisk3 and if I replace that disk with a 'new' 9.1GB drive (which is what I did last time - replace a disk with the same size disk) - I want to not have nasty surprises and unexpected errors. I was stunned last time ... I want to be better prepared this time.

Originally posted by: orphy

OK so it was me who got confused then.

To make things clean, you can rmlvcopy (e.g. rmlvcopy lvol1 1 hdisk3) all the LVs out of hdisk3 (lspv -l hdisk3); rmdev -dl hdisk3; replace it with a new one, cfgmgr, extendvg vg01 hdiskX, and put the mirror back to hdiskX.

If you just swap out the hdisk3 w/o cleaning up the ODM, AIX is not happy. And depending on the exact type of disks you have, the procedure might need to be altered a bit to fit your local need. Good luck!
Orphy