Install Iscsi target on proxmox?

M

MaxP

New Member
Aug 31, 2010
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Hello:

We have a recently installed proxmox cluster. The master has a 6 TB Raid 5 volume and I wish to share this volume trought iSCSI among the nodes, Is possible to install iscsi target in the master?, i mean, proxmox install custom kernel and the iscsi package and moldules (iscsi_trgt) are not copatible.

thanks in advance
best regards.
 
MaxP said:
We have a recently installed proxmox cluster. The master has a 6 TB Raid 5 volume and I wish to share this volume trought iSCSI among the nodes, Is possible to install iscsi target in the master?, i mean, proxmox install custom kernel and the iscsi package and moldules (iscsi_trgt) are not copatible.
Click to expand...

Really? What kernel do you use? Anyways, we usually use the SCST iSCSI target (which also support tapes) - packages 'scstadmin'
 
Hello.

the kernel 2.6.32-3-pve. how can i add a target LUN? we recently add 6TB in raid 5 and we want to create a iSCSI target for this /dev/cciss/c0d1: 6001.0 GB, 6001072168960 bytes

any ideas?

thanks in advance.
best regards
 
if iscsitarget couldnl't be easily installed,
i also need to know how to accomplish this with scstadmin.
 
@Tom
Sorry, please don't be irritated.
i'm just in a hurry to test all this before installing production servers.
 
I have built and installed the debian packages for the iscsitarget package. Below are the commands I used. I have not finished setting it up so can't confirm that it is operating correctly.

Code: 
sudo -s

apt-get install devscripts quilt pve-headers-`uname -r`

mkdir -p ~/src/dkms
cd ~/src/dkms
dget http://backports.debian.org/debian-backports/pool/main/d/dkms/dkms_2.1.1.2-2~bpo50+1.dsc
dpkg-source -x dkms*.dsc
cd dkms*
dpkg-buildpackage -rfakeroot
dpkg -i ../*.deb
apt-get install -f

mkdir -p ~/src/iscsitarget
cd ~/src/iscsitarget
dget http://ftp.us.debian.org/debian/pool/main/i/iscsitarget/iscsitarget_1.4.20.2-1.dsc
dpkg-source -x iscsitarget*.dsc
cd iscsitarget*
dpkg-buildpackage -rfakeroot
dpkg -i ../*.deb
apt-get install -f
 
kimnzl, thank you for the reply!
i already tried to do this with iscsi-scst (scst is already installed) with success!:

Code: 
# apt-get install iscsi-scst scstadmin
Then edit the SCST configuration file /etc/scst.conf to export a volume as a lun:

Code: 
# Automatically generated by SCST Configurator v1.0.6.

[HANDLER tape_perf]
#DEVICE <H:C:I:L>

[HANDLER disk]
#DEVICE <H:C:I:L>

[HANDLER vdisk]
#DEVICE <vdisk name>,<device path>,<options>,<block size>
DEVICE volume1,/dev/LvmVolumeGroupName/LvmLogicalVolume1,NV_CACHE,512

[HANDLER vcdrom]
#DEVICE <vdisk name>,<device path>

[HANDLER disk_perf]
#DEVICE <H:C:I:L>

[HANDLER tape]
#DEVICE <H:C:I:L>

[GROUP Default]
#USER <user wwn>

[ASSIGNMENT Default]
#DEVICE <device name>,<lun>
#Allways begin with lun 0
DEVICE volume1,0

[TARGETS enable]
#HOST <wwn identifier>

[TARGETS disable]
#HOST <wwn identifier>
notice the [HANDLER vdisk] and [ASSIGNMENT Default] sections!

also edit /etc/initiators.allow to allow a client or network to connect to the target.
(see /etc/iscsi-scstd.conf for targetname)

after that just reload the new config:
Code: 
/etc/init.d/scst reload
or
Code: 
/etc/init.d/scst force-reload
check the DEVICEs with:
Code: 
cat /proc/scsi_tgt/scsi_tgt
i just have one issue on all this; after a resize (lvresize) of the exported DEVICE you have to notify scst the new size:

Code: 
# echo "resync_size NAME_OF_YOUR_DEVICE" >/proc/scsi_tgt/vdisk/vdisk
but it couln't write to it and just hang till i aborted it with ctrl-c.
eventually i just rebooted the server and the new size is then applied.

Alvin.
 
Hi Alvin,

could you give me an example how to do this with a device like /dev/sda ?!

thank you in advance

kind regards,
 
Robert_ said:
Hi Alvin,

could you give me an example how to do this with a device like /dev/sda ?!

thank you in advance

kind regards,
Click to expand...

just replace "/dev/LvmVolumeGroupName/LvmLogicalVolume1" with "/dev/sda" or whatever unused disk/partition
 
oh i see,

i thought have to put this under

[HANDLER disk]
#DEVICE <H:C:I:L>


But if it is that easy, even better. Thank you very much.
 
I think i need some more help here :)

My scsi_tgt gives me the following

/etc/acpi# cat /proc/scsi_tgt/scsi_tgt | grep disk
0:0:0:0 dev_disk
1:0:0:0 dev_disk
2:0:0:0 dev_disk
3:0:0:0 dev_disk
6:0:0:0 dev_disk

my /etc/scst.conf looks like that

[HANDLER disk]
#DEVICE <H:C:I:L>
#DEVICE 0:0:0:0
DEVICE 1:0:0:0
#DEVICE 2:0:0:0
#DEVICE 3:0:0:0

[ASSIGNMENT Default]
#DEVICE <device name>,<lun>
#DEVICE 0:0:0:0,0
DEVICE 1:0:0:0,0
#DEVICE 2:0:0:0,0
#DEVICE 3:0:0:0,0

When i reload /etc/init.d/scst everything fine with the config beeing as it is above. I can then connect to the iscsi device and get one of the hdd.

My problem is, when i uncomment only one of the other DEVICES in the scst.conf i get the following error

/etc/init.d/scst force-reload
Reloading SCST configurationStopping the mid-level SCSI target SCSTERROR: Module scst is in use by iscsi_scst
FAILED failed!
Loading and configuring the mid-level SCSI target SCST failed!


Could someone tell me what i am doing wrong? Plus what i would like to know is, how can i find out which of the

0:0:0:0 dev_disk
1:0:0:0 dev_disk
2:0:0:0 dev_disk
3:0:0:0 dev_disk
6:0:0:0 dev_disk

is sda,sdb,sdc ect.

edit: btw 1:0:0:0 is sdb1 on the prox host

Thank you very much in adcance for any assistance.

Kind regards,

Robert
 
Last edited:
does someone can help me out with my question above?

thanks in advance

kind regards,

Robert
 
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