[Users] way to edit iSCSI storage domain?

[Shu Ming]

Yuriy Demchenko:
> Hi,
>
> is there any way to edit iSCSI storage domain: change/add targets ? 
> (lun, id, sn and actual content wouldn't be affected) Without VM 
> export/import process - downtime should be as little as possible.
>
> I'm researching possibility to use oVirt in env where I have only FC 
> storage, connected to 2 servers (and sadly, second server will be 
> available later, hence my question about changing targets in oVirt) 
> and bunch of blades, on which i would like to run virtualization (no 
> fc storage connectivity) - so idea is to share storage via iSCSI/tgtd 
> and use multipathd with failover mode to protect from storage 
I am not sure if the multipathd can recognize the FC path to the storage 
when the second server is available and regards it as the same as the 
iSCSI path used before. If it is not, I think the device under 
/dev/mapper may change when you cut the iSCSI path off and then enable 
FC path. That will definitely corrupt the meta data of the volume group 
which the storage domain is sitting on and the storage domain will be 
corrupted finally.

> corruption.
>


-- 
---
舒明 Shu Ming
Open Virtualization Engineerning; CSTL, IBM Corp.
Tel: 86-10-82451626  Tieline: 9051626 E-mail: shuming at cn.ibm.com or shuming at linux.vnet.ibm.com
Address: 3/F Ring Building, ZhongGuanCun Software Park, Haidian District, Beijing 100193, PRC