[linux-lvm] iSCSI and LVM
Greg Freemyer
freemyer at NorcrossGroup.com
Tue May 13 09:42:01 UTC 2003
>> Hi,
>> Is anyone on this list familiar with iSCSI? I was wondering if
>> it'd be possible to setup a Logical Volume as an iSCSI target and export
>> it over an IP network for other clients to use. I'm interested in
>> setting up an IP SAN, where the storage devices are logical volumes
>> managed by LVM. There's this company called SANRAD that makes a hardware
>> device called an iSCSI switch. The iSCSI switch is connected to a pool
>> of storage disks on the back-end and to a bunch of servers on the
>> front-end. It uses logical volume management to carve out logical disks
>> from the back-end storage disks, then exports these using iSCSI to the
>> front-end servers. (Check out their website http://www.sanrad.com for a
>> nice flash movie of this architecture). Anyways, some fellow classmates
>> and I are interested in building such an iSCSI switch in software, using
>> LVM and other opensource components. Any feedback would be greatly
>> appreciated.
>> Regards,
>> Kai-Min Sung
Ignoring efficiency issues, you should not have any problem putting together a
Linux Server with lots of internal disk space, then using LVM to manage that
space, and have iSCSI target software share it out to a small collection of iSCSI
initiators.
FYI: I have only tested iSCSI exporting of partitions, not LVM LVs.
I assume you know that iSCSI was formally accepted earlier this year. I don't
know if there is a OSS target and initiator pair available yet or not that implements
the formal spec.
The Intel reference implementation appears not to have been updated yet:
http://sourceforge.net/projects/intel-iscsi
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