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Full Discussion: Sysinfo output for lvm commands
Top Forums Shell Programming and Scripting Sysinfo output for lvm commands Post 303026380 by gsiva on Monday 26th of November 2018 11:13:49 PM
Old 11-27-2018
Sysinfo output for lvm commands
Hi folks,


I have created a sysinfo script to capture the system information on daily basis which run in cron jobs.

Whereas, the output saved in the file are getting disapperared after some times..

Mainly for eg: the lvm commands like pvs,lvs, vgs, lvdisplay, pvdisplay..



Code:
#!/bin/bash
#get date in dd-mm-yyyy format
NOW=$(date +"%d-%m-%Y-%H:%M:%S")
 
# Create the directory if does not exist
mkdir -p /root/SYSINFO/`hostname`/


# create output file name
OUTPUT="/root/SYSINFO/`hostname`/sysinfo.`hostname`.$NOW.log"
 
# Assign the fd 3 to $OUTPUT file
exec 3> $OUTPUT


echo "***********[ LVDISPLAY ] *************" >&3
lvdisplay >&3
echo >&3
echo "***********[ PVDISPLAY  ]************" >&3
pvdisplay >&3
echo >&3
echo "*********** VGDISPLAY ***************" >&3
vgdisplay  >&3
echo >&3
echo "***********[ PVSCAN ] ****************" >&3
pvscan  >&3
echo >&3
echo "***********[ VGSCAN ] ***************" >&3
vgscan  >&3
echo >&3
echo "***********[ LVSCAN ] ***************" >&3
lvscan  >&3
echo >&3
echo "***********[ PVS  ]******************" >&3
pvs >&3
echo >&3


When i run the script, i got the message while executing it:
# sh sysinfo.sh


Code:
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on lvdisplay invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on pvdisplay invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on vgdisplay invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on pvscan invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on vgscan invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on lvscan invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on pvs invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on vgs invocation. Parent PID 118041: sh
File descriptor 3 (/root/SYSINFO/APDSMPPD01/sysinfo.APDSMPPD01.27-11-2018-11:28:18.log) leaked on lvs invocation. Parent PID 118041: sh


Not sure what is the causing the saved outputs gets disappeared.



-Siva
 

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LEARN ABOUT DEBIAN

dtc_setup_vps_disk

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

NAME

       dtc_setup_disk - setup LVM disks for using it as a VM

SYNOPSIS

       dtc_setup_vps_disk.sh VPS_NUMBER HDD_SIZE SWAP_SIZE [ lvm|loopback ]

DESCRIPTION

       dtc_setup_vps_disk.sh This shell script is a part of the dtc-xen package that is to be used by the dtc panel to manage a Xen VPS server.

       This script is used to create partitions to be used by a VPS later on.  It will create a normal partition that will be used as a root disk,
       and a swap partition.

       dtc_setup_disk is to be used by the dtc-xen SOAP server, but can also be used as a standalone userland tool.

       If the partition(s) exists, then this script will delete it/them first.

OPTIONS

       VPS_NUMBER has to be a number between 01 and 19. Let's say the number is 16, and that dtc-xen is configured to use the volume group  called
       lvm1, then this script will create /dev/lvm1/xen16 and /dev/lvm1/xen16swap.

       HDD_SIZE Size in MB of the VPS partition to create.

       SWAP_SIZE  Size in MB of the VPS swap partition to create. If the dtc-xen SOAP server is used to create the VPS, then it will create a swap
       partition of the exact same size as the memory.

       IMAGE_TYPE This parameter can have 2 values: either lvm or loopback. If ommited, then lvm is used. If lvm is used, then	this  script  will
       create a partition using lvmcreate, otherwise it will create an image file. Both will later be used for the VPS.

EXAMPLE

       dtc_setup_vps_disk 04 15360 256 lvm

       This will create 2 LVM partition to be used by the VPS named xen04, the first one being a root partition of 15 GB, and the second one being
       a swap partition of 256 MB.

VERSION

       This documentation describes dtc_setup_vps_disk version 0.3.15.	See http://www.gplhost.com/software-dtc-xen.html for updates.

SEE ALSO

       dtc_reinstall_os(8), dtc_kill_vps_disk(8)

															    dtc_setup_vps_disks(8)
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