topic Re: Linux FC MPIO driver will not load in Additional Virtualization Discussions

Linux FC MPIO driver will not load

petter_glenstrup — Thu, 05 Jun 2025 07:29:17 GMT

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

Petter

chriskranz — Wed, 15 Apr 2009 12:22:08 GMT

Do you get any specific errors?

What are the HBA models and firmware levels?

petter_glenstrup — Wed, 15 Apr 2009 13:28:04 GMT

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: 8.02.00.06.05.03-k

QLogic QMH2462 -

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

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

rsarraf — Tue, 26 May 2009 05:57:20 GMT

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

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

rsarraf — Tue, 26 May 2009 08:35:24 GMT

Correction:

It is directio and not direct_io