[dm-devel] Multipath setup

[Christophe Varoqui]

> 
> installed the 2.6.12.rc2-odm1 (I turned on the Multi-Device
> support/Device 
> Mapper Support and Multipath I/O Support)
> 

"Multipath I/O" is the MD driver.
You need to enable the DM one.

> 
> [root at dhcp76 multipath-tools-0.4.4]# /sbin/dmsetup targets
> striped          v1.0.2
> linear           v1.0.1
> error            v1.0.1
> 
> Is that mean I don't have multipath support compiled in the kernel ?
> 
Yes

> Also, I have a generic question regarding to the multipath tool. We ran
> some 
> virtualization softwares, which generate different UUID (SCSI VPD 83)
> for the 
> same LUN go through different path, can the multipath software config
> these 
> two LUNs with difference UUID in a multipath setup ?
> 
You have to forge your own "getuid" program then.
Default one is scsi_id.

Regards,
cvaroqui