Manually reactivate LVM’s in Linux

I’m not sure what the deal is, but often when you boot Linux up single user you only get the root volume group activated. This could be totally normal behavior, and no big deal. When you have /usr /var and other portions of the file system broken up … it becomes a big deal.

After looking around the lvm man page awhile, this worked for me.

Before:

# lvm lvscan
Failed to find sysfs mont point
inactive ‘/dev/var/var [7.99 GB] inherit
ACTIVE ‘/dev/system/root [7.80 GB] inherit
ACTIVE ‘/dev/system/swap [2.00 GB] inherit

Execute this:

# lvm vgsan
# lvm vgchange -ay

After:

# lvm lvscan
Failed to find sysfs mont point
ACTIVE ‘/dev/var/var [7.99 GB] inherit
ACTIVE ‘/dev/system/root [7.80 GB] inherit
ACTIVE ‘/dev/system/swap [2.00 GB] inherit

You may now mount volumes as normal for maintenance.