Additional Virtualization Discussions

Linux FC MPIO driver will not load


Hi all

We have a problem loading tje Fibre Channel Multi-Path IO (MPIO) for Linux.

It is a Ubuntu 8,03

Any ideas ?

Best Regards




Do you get any specific errors?

What are the HBA models and firmware levels?


Yes, we used the setup seen here:

LUNs is made from filerview, the 4 disk is viewable, the same disk from 4 paths, and we can do a fdisk -l on them.

Output from multipath -ll gives this:

# multipath -ll

sda: checker msg is "readsector0 checker reports path is down"

sdc: checker msg is "readsector0 checker reports path is down"

sdb: checker msg is "readsector0 checker reports path is down"

sdd: checker msg is "readsector0 checker reports path is down"

360a98000572d4377565a4f6b6852454adm-2 NETAPP ,LUN

[size=475G][features=1 queue_if_no_path][hwhandler=0]

\_ round-robin 0 [prio=0][active]

\_ 0:0:0:0 sda 8:0 [active][faulty]

\_ 1:0:0:0 sdc 8:32 [active][faulty]

\_ round-robin 0 [prio=0][enabled]

\_ 0:0:1:0 sdb 8:16 [active][faulty]

\_ 1:0:1:0 sdd 8:48 [active][faulty]

We have tried with CentOS 5,3 and here it works fine.

The HBA cards are:

QLogic Fibre Channel HBA Driver:

QLogic QMH2462 -

ISP2432: PCIe (2.5Gb/s x4) @ 0000:08:00.0 hdma+, host#=0, fw=4.04.05

[IP] [Multi-ID] [84XX]


Can you use the "direct_io" path checker and try ?

readsector0 had many issues and was deprecated. direct_io is the new default, upstream.



It is directio and not direct_io

NetApp on Discord Image

We're on Discord, are you?

Live Chat, Watch Parties, and More!

Explore Banner

Meet Explore, NetApp’s digital sales platform

Engage digitally throughout the sales process, from product discovery to configuration, and handle all your post-purchase needs.