I always used IET on CentOS but I have a quick server to setup to backup some VM's, then migrate to DAS on another server and the easiest way for me will be to accomplish this via iSCSI vmfs stores. I figured I would just use the ini that ships with CentOS but have never used it against ESX, anyone do this and have experiences they care to share? Should it be trivial or are there any non standard configs that need to be used?
Thanks! jlc
Joseph L. Casale wrote:
I always used IET on CentOS but I have a quick server to setup to backup some VM's, then migrate to DAS on another server and the easiest way for me will be to accomplish this via iSCSI vmfs stores. I figured I would just use the ini that ships with CentOS but have never used it against ESX, anyone do this and have experiences they care to share? Should it be trivial or are there any non standard configs that need to be used?
Are you talking about using CentOS as an iSCSI server and having ESX talk to it via iSCSI client? Or are you talking about running CentOS inside ESX and using an iSCSI client from within the guest VM?
I have done the latter, and have used OpenFiler as an iSCSI server for ESX's iSCSI client, and both worked fine no special options needed.
nate
On Tue, Sep 30, 2008 at 10:28 AM, Joseph L. Casale < JCasale@activenetwerx.com> wrote:
I always used IET on CentOS but I have a quick server to setup to backup some VM's, then migrate to DAS on another server and the easiest way for me will be to accomplish this via iSCSI vmfs stores. I figured I would just use the ini that ships with CentOS but have never used it against ESX, anyone do this and have experiences they care to share? Should it be trivial or are there any non standard configs that need to be used?
Thanks! jlc _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
I have CentOS v5.2 running as an iSCSI target server and multiple ESXi servers as the initiator with VMFS. This works great! The tgt daemon that comes with CentOS is simple to support as long as you know how to use tgtadm to setup the targets. I modified the tgtd init script to allow me to use config files. I did not use CHAP since this was a private network. I just locked it down by IP range. ESX had no problems connecting too and mounting the iSCSI targets. ---- Jason Cox
I have CentOS v5.2 running as an iSCSI target server and multiple ESXi servers as the initiator with VMFS. This works great! The tgt daemon that comes with CentOS is simple to support as long as you >know how to use tgtadm to setup the targets. I modified the tgtd init script to allow me to use config files. I did not use CHAP since this was a private network. I just locked it down by IP range. ESX >had no problems connecting too and mounting the iSCSI targets.
Jason Cox
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
On Tue, Sep 30, 2008 at 12:06 PM, Joseph L. Casale JCasale@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.
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Jason Cox -
Joseph L. Casale -
nate