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I tried to test this out under VirtualBox using 10GB disks and it looks like this is not possible. After recreating RAID on the new partitions I do not get back the volume group.– LungtenCommented Jan 1, 2019 at 5:42
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This is doable, but high risk. You need to back up first, then ensure the LVM has space free at the end, then shrink RAID (using --grow ! ) then finish a full rebuild RAID, remove first disk, partition, add back.– davidgoCommented Jan 1, 2019 at 6:58
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I should have explicitly stated you need to shrink the PV under LVM.– davidgoCommented Jan 1, 2019 at 7:00
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@davidgo Shrinking RAID and rebuilding makes sense. I will try this.– LungtenCommented Jan 1, 2019 at 9:17
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