[CentOS] iSCSI ini and ESX Server

Jason Cox cscoman at gmail.com
Thu Oct 2 23:51:28 UTC 2008


On Tue, Sep 30, 2008 at 12:06 PM, Joseph L. Casale
<JCasale at activenetwerx.com> wrote:
> Great, I guess I had better read up on how to create targets, I just assumed it would
> be like iet and use text files. What was your mod for the init script?
>
> jlc
>

I added the following to my /etc/init.d/tgtd


TARG=/etc/iscsi/tgtd.d

target_start()
{
        echo -n $"Adding iSCSI targets: "
        for i in `find ${TARG} -name "target[0-9]*" -type f` ;do
                source ${i}
                echo -n "$TGTNAME "
                ${TGTADM} --op new  --mode target      --tid=${TID}
--targetname=${IQN}
                ${TGTADM} --op new  --mode logicalunit --tid=${TID}
--lun=1 --backing-store=${STORAGE}
                for j in ${NETWORK} ;do
                        ${TGTADM} --op bind --mode target
--tid=${TID} --initiator-address=${j}
                done
        done
        echo
}

target_stop()
{
        echo -n $"Removing iSCSI targets: "
        for i in `find ${TARG} -name "target[0-9]*" -type f` ;do
                source ${i}
                echo -n "$TGTNAME "
                ${TGTADM} --op delete --mode target --tid=${TID}
--targetname=${IQN}
        done
        echo
}

I call target_start() after start() runs and I call target_stop()
before stop() runs.

Here is the template of the files I am using in the TARG directory:

TGTADM=" /usr/sbin/tgtadm --lld iscsi"
DATE="2008-02" # Current month and year
DOMAIN="com.domain.host"
DEV="<device name>" # example sdb
STORAGE="/<path>/<dev>" # example /dev/sdb
NETWORK="ALL" # Set what networks can access target. Separate network
addresses with spaces
TID="#"   # target id exp. 1
TGTNAME="<template>" # example prod_storage
IQN="iqn.${DATE}.${DOMAIN}:${DEV}.${TGTNAME}"

Then I name the file target01, target02, etc.

When I get the time, I am going to complete an admin script to bring
up new targets or take down targets when I need to. It will also check
the status of the targets to see who is connected. I can post that
once I am done if you are interested.

-- 
Jason Cox


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