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Top Forums UNIX for Advanced & Expert Users LVM, Troubles with adding another Disk Post 302917026 by netnerd on Saturday 13th of September 2014 09:46:43 AM
run the following
pvscan
vgscan
lvscan
vgs
lvs
pvs

See what that shows. If all else fails you can look at running a vgcfgbackup and vgcfgrestore with choose the config in /etc/lvm that is good. The tree looks like this.
ls -R /etc/lvm
/etc/lvm:
archive backup cache lvm.conf

/etc/lvm/archive:
vg_root_00000-1774443783.vg

/etc/lvm/backup:
vg_root

/etc/lvm/cache:

 
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VGREDUCE(8)						      System Manager's Manual						       VGREDUCE(8)

NAME
vgreduce - reduce a volume group SYNOPSIS
vgreduce [-a|--all] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--removemissing] [-t|--test] [-v|--verbose] VolumeGroupName [Physi- calVolumePath...] DESCRIPTION
vgreduce allows you to remove one or more unused physical volumes from a volume group. OPTIONS
See lvm for common options. -a, --all Removes all empty physical volumes if none are given on command line. --removemissing Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those. This resumes normal operation of the volume group (new logical volumes may again be created, changed and so on). If this is not possible (there are logical volumes referencing the missing physical volumes) and you cannot or do not want to remove them manually, you can run this option with --force to have vgreduce remove any partial LVs. Any logical volumes and dependent snapshots that were partly on the missing disks get removed completely. This includes those parts that lie on disks that are still present. If your logical volumes spanned several disks including the ones that are lost, you might want to try to salvage data first by acti- vating your logical volumes with --partial as described in lvm (8). SEE ALSO
lvm(8), vgextend(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGREDUCE(8)

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