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Full Discussion: Simple shell script function
Top Forums UNIX for Beginners Questions & Answers Simple shell script function Post 303031420 by bakunin on Thursday 28th of February 2019 05:30:34 AM
Old 02-28-2019
Quote:
Originally Posted by kvosu
function looks at every VG(volume group on servers having multiple) and if there are disks in missing state says OK.
Not quite: lsvg -o in AIX (i suppose this is AIX, yes?) gives a list of volume groups in varyon state, not "every volume group". If there is a volume group but you did a varyoffvg <vg> then it will not be included in this list, although it will be displayed in lsvg.

Also notice that in HACMP-clusters nowadays (HACMP 7.1.x and 7.2) VGs are in a "somewhat varyon" state on the passive node(s) if you get your disks from a SAN and the LUNs are in the "no_reserve" state. I am not sure if a lsvg -p would succeed on such a VG even though the disks are there.

Quote:
Originally Posted by kvosu
I would like the script to give single output of "OK:PASSED" instead of each time. how do i do it?
Wouldn't it make a lot of sense to include the name of the VG with problems if there is one? You also should not use "echo" in a ksh (you do use ksh, no?) but print, which is a shell-builtin. If you want to be 101% POSIX-compliant use neither but printf.

Anyway, consider this, change the error message to your liking and/or remove the -u2 if you want to redirect the error message to stdout instead of stderr:

Code:
vgcheck ()
{
typeset chVG=""

lsvg -o | while read chVG ; do
     if ! lsvg -p "$chVG" | grep -qi "missing" ; then
          print -u2 "Error: ($chVG) disks missing"
          return 1
     fi
done
print "OK:PASSED"
return 0
}

I hope this helps.

bakunin
 

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LEARN ABOUT NETBSD

vgreduce

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 2.02.44-cvs (02-17-09)					       VGREDUCE(8)
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