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2 or more iSCSI 7 years 11 months ago #92

Hi:

Can be configured more than one iSCSI backing store?
I'll like to get one iSCSI SR with SATA disks and another one with SSD disks.

Can be configured iSCSI-HA to get something like this?:

- Disks 1+2 create the first RAID 1+0 array and will be used to install XCP/XenServer
- Disks 3+4 create the second RAID 1+0 array and will be used as the iSCSI backing store with SSD disks.
- Disks 5+6 create the second RAID 1+0 array and will be used as the second iSCSI backing store with SATA disks.

Thanks.

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Last edit: by soylor.

2 or more iSCSI 7 years 11 months ago #94

Yes - this is supported - iscsi-ha supports multiple devices.

- Create an additional DRBD device (same steps as the first one - add to the DRBD configuration file)

- In the iscsi-ha configuration file - you will need to set the name of the additional DRBD resource (assuming iscsi1 and iscsi2).. Here is a snippet from the conf file

####################################
# Declare the DRBD resource names
# in a ":" separated list like this
# resource1:resource2:resource3
####################################
DRBD_RESOURCES=iscsi1:iscsi2

The completed configuration will use a single iscsi target IP address. Each backing store becomes a unique LUN (via the tgtd configuration)

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Last edit: by Pulse Supply. Reason: mark as resolved

2 or more iSCSI 7 years 2 weeks ago #310

Hello

Did You succeeded with 2 iSCSI devices?
May I ask for detailed procedure?

BR
ek

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2 or more iSCSI 7 years 2 weeks ago #311

IN order to support 2 iscsi devices you will need to do the following when building a system based on the reference design we publish:

- in the DRBD configuration file add a second DRBD device (ie. iscsi2)

- in the TGT configuration file add another backing device with a different LUN than the first backing device

- in the iscsi-ha.conf file specify the names of the 2 drbd devices. Assuming you name them iscsi1 and iscsi2, the required configuration line will look like this:
DRBD_RESOURCES=iscsi1:iscsi2

- Make sure to update your LVM filter accordingly so that both of the iscsi devices are only exposed via the iscsi target.

Once completed you should be able to connect to a single iscsi target IP address and see 2 LUNs from xencenter.

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2 or more iSCSI 7 years 5 days ago #315

Yes it works!!

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2 or more iSCSI 6 years 6 months ago #373

can anybody give step by step instructions ???
PLZ

do i need to run again # ./halizard_nosan_installer_1.3.8 ??

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Last edit: by dimi.