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Full Discussion: Columns count
Top Forums Shell Programming and Scripting Columns count Post 302399744 by daveisme on Monday 1st of March 2010 10:50:22 AM
Old 03-01-2010
Columns count

I'm writting a script that will get the logical volumes from a volume group and check for mirroring. I'm using a while read line command. I need to be able to count the columns for the output and if it is <= 3 save the logical volume to a file and if it is > 3 continue. How do I capture the number of collumns in the line? Here is what I have;

Code:
lsvg -o|lsvg -i -l|awk '{print $1}' >/tmp/lvols.txt

Code:
cat /tmp/lvols.txt |while read line
do
if [[ $line == rootvg: || $line == LV ]]
then
continue
else
lslv -m $line
fi
done


NOTE: lslv -m will display LP numbers (all of them for the lv) sample output below of non-mirrored logical volume

Code:
hd3:/tmp
LP    PP1  PV1               PP2  PV2               PP3  PV3
0001  0264 hdisk0
0002  0265 hdisk0
0003  0266 hdisk0
0004  0267 hdisk0
0005  0268 hdisk0


Last edited by radoulov; 03-01-2010 at 11:52 AM.. Reason: Please use code tags!
 

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

NAME
vgdisplay - display attributes of volume groups SYNOPSIS
vgdisplay [-A|--activevolumegroups] [-c|--colon|-s|--short|-v|--verbose] [-d|--debug] [-h|--help] [--ignorelockingfailure] [--nosuffix] [-P|--partial] [--unitshHbBsSkKmMgGtTpPeE] [--version] [VolumeGroupName[VolumeGroupName...]] vgdisplay --columns | -C [--aligned][-d|--debug][-h|-?|--help] [--ignorelockingfailure][--noheadings][--nosuffix] [-o|--options[+]Field[,Field]] [-O|--sort[+|-]Key1[,[+|-]Key2[,...]]] [-P|--partial] [--separatorSeparator] [--unbuffered] [--unitshHbB- sSkKmMgGtTpPeE] [-v|--verbose] [--version] [VolumeGroupName[VolumeGroupName...]] DESCRIPTION
vgdisplay allows you to see the attributes of VolumeGroupName (or all volume groups if none is given) with it's physical and logical vol- umes and their sizes etc. vgs (8) is an alternative that provides the same information in the style of ps (1). OPTIONS
See lvm for common options and vgs for options given with --columns. -A, --activevolumegroups Only select the active volume groups. -c, --colon Generate colon separated output for easier parsing in scripts or programs. N.B. vgs (8) provides considerably more control over the output. The values are: 1 volume group name 2 volume group access 3 volume group status 4 internal volume group number 5 maximum number of logical volumes 6 current number of logical volumes 7 open count of all logical volumes in this volume group 8 maximum logical volume size 9 maximum number of physical volumes 10 current number of physical volumes 11 actual number of physical volumes 12 size of volume group in kilobytes 13 physical extent size 14 total number of physical extents for this volume group 15 allocated number of physical extents for this volume group 16 free number of physical extents for this volume group 17 uuid of volume group -s, --short Give a short listing showing the existence of volume groups. -v, --verbose Display verbose information containing long listings of physical and logical volumes. If given twice, also display verbose runtime information of vgdisplay's activities. --version Display version and exit successfully. --columns|-C Display output in columns, the equivalent of vgs. Options listed are the same as options given in vgs (8). SEE ALSO
lvm(8), vgs(8), pvcreate(8), vgcreate(8), lvcreate(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGDISPLAY(8)
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