Originally posted by: jalite19

we just replaced a mirrored failed disk (not a root disk), after new disk hdisk3 becomes visible, I run 'mirrorvg extvg hdisk3' without using -m option.
All the lvs are synced, but PP order of each LV on the new disk hdisk3 is different to its mirrored disk hdisk32.
for example: # lslv -m transfer
transfer:/data/transfer
LP PP1 PV1 PP2 PV2 PP3 PV3
0001 0307 hdisk32 0224 hdisk3
0002 0308 hdisk32 0225 hdisk3
0003 0309 hdisk32 0226 hdisk3
.

1. lspv -p hdisk32

hdisk32:
PP RANGE STATE REGION LV NAME TYPE MOUNT POINT
1-16 used outer edge sec jfs /sec
17-80 used outer edge load_1 jfs /load_1
.

1. lspv -p hdisk3

hdisk3:
PP RANGE STATE REGION LV ID TYPE MOUNT POINT
1-31 free outer edge
32-131 used outer edge test jfs /test
132-219 used outer edge load_1 jfs /load_1
.
I want to make PP order the same across two disks, how can I correct this? Can I unmirrorvg, format hdisk3, re-attach to vg and resync again while online?
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Originally posted by: SystemAdmin

no need to "format" disk.

learn about lvm, in this case mklv / chlv manual, search for superstrict.

greets
D.
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Originally posted by: jalite19

Can your answer please be a bit more specific? just high level steps will help
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Originally posted by: tech100

you can unmirrorvg and mirrorvg again with option -m

somethink like:

unmirrorvg extvg hdisk3
mirrorvg -m -s extvg hdisk3
varyonvg extvg #to begin syncvg in background

ps -ef|grep sync #should show ~'synlv' processes
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Originally posted by: Siddhartha.Sinha

tech100 gave all the steps. only last step ( varyonvg) is not required because it will be already varied on.
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Originally posted by: tech100

hi Siddhartha.Sinha
,

maybe you don't know, but "varyonvg avg" is very offten was to syncvg - even if it is already varied on.

btw. also when a pv is in missing state (ag is was not available for a moment and entered missing state) then running varyonvg usually makes it available again and syncs all stale PPs...

regards,T.
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Originally posted by: Siddhartha.Sinha

@tech100, I have to admit I didn't know that. I use lresynclv to re-sync the stale pps, but never used that trick u mentioned before.
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Originally posted by: MarkTaylor

use mirrorvg -Ssm <vgname> <pvname> to fire off the syncvg in the background in one command, then

while :
do
lsvg | grep STALE
sleep 15
done

to monitor the progress ..

HTH
Mark Taylor
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