Unable to deactivate volume group : open count remains 1 even after unmount in RHEL 5

Solution Verified - Updated 2024-08-07T07:13:34+00:00 -

Issue

Unable to deactivate volume group . The logical volumes has been unmounted however when trying to deactivate command fails with error message:

[root@host ~]# vgchange -an vg01 
Can't deactivate volume group "vg01" with 1 open logical volume(s)

Red Hat Enterprise Linux (RHEL) 5
lvm2
/proc/mdstat shows the device in question as a spare or active device in a raid device
- Other environments having these symptoms but that do not match this condition may be susceptible to a similar problem

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