Anyone have DSS working with Xenserver 6 and Multipath

[webguyz]

Trying to get DSS working on new Xenserver 6. Followed the instructions in the PDF dated February 2011. Not getting the proper info in the field pgpolicy when doing a multipath -v3. Instead of multibus its saying failover.

Also, in the xencenter console when choosing a LUN it shows the type as being IET instead of SCST_BIO.

Thinking something may have changed in Xenserver 6.0.

Anyone?

[enealDC]

What does your multipath.conf file look like?

[webguyz]

I determined my problem I have my ISCSI protocolset to IET. Thought it was set to SCST, but I think it was changed to IET because I was doing Hyper-V a year ago or so. Trying to figure out if I will screw up my Onapp setup if I switch it from IET to SCST.

Thanks!

[butre]

hi

i had xenserver 5.6 working with multi path but after 4 months i had a connection issue with one of the LUN's caused by multi path apparently this was due to xenserver bug. i think it is working okay with version 6 but i have decided to stay clear of multi path from now on as i lost 3 of my VM's (critical ones) for about 24 hours before i figured out what was causing the issue

[webguyz]

I decided to keep my ISCSI settings on my DSS at IET and xenserver 6 works fine with multipath after I added the following line to /etc/multipath.conf:

defaults {
user_friendly_names no
path_grouping_policy multibus
}

So far everything is working well with Xenserver 6.0. Doing a lot of testing and everything is working smoothly.

Like that it supports Jumbo Frames. Easy to set MTU=9000 through the XenCenter gui instead of having to use xe commands as before.

[Gr-R]

Good to know, and Thanks webguys.

Consider moving to SCST at some point though, as it can be tuned should performance suffer at all.