Red Hat Multipath problem on MSA2324fc

BrianBuchanan — Tue, 29 Jun 2010 01:08:59 GMT

I am setting up two ProLiant DL380 G6 servers, each with two dual port QLogic HBA. Each HBA connects to two switches, and each switch connects to both controllers of an MSA2324fc. The MSA2324fc has 3 vdisks each with one volume.

There is a local raid for the O/S that isn't giving me any trouble. Installation and updating went fine.

The trouble is setting up the Multipath support in Red Hat. I've followed the Red Hat DM Multipath guide:

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/DM_Multipath/index.html

up to 3.1 when I ran multipath -v2.

I'm supposed to get a list of all the paths, but instead I get this:

[root@rac3894 ~]# multipath -v2

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

sde: checker msg is "tur checker reports path is down"

sdh: checker msg is "tur checker reports path is down"

sdk: checker msg is "tur checker reports path is down"

sdn: checker msg is "tur checker reports path is down"

sdq: checker msg is "tur checker reports path is down"

sdt: checker msg is "tur checker reports path is down"

sdw: checker msg is "tur checker reports path is down"

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

sdf: checker msg is "tur checker reports path is down"

sdi: checker msg is "tur checker reports path is down"

sdl: checker msg is "tur checker reports path is down"

sdo: checker msg is "tur checker reports path is down"

sdr: checker msg is "tur checker reports path is down"

sdu: checker msg is "tur checker reports path is down"

sdx: checker msg is "tur checker reports path is down"

Have I missed something obvious?

Thanks,

Brian

Re: Red Hat Multipath problem on MSA2324fc

BrianBuchanan — Wed, 30 Jun 2010 13:16:51 GMT

Solved. The very first invocation of multipath -v2 produces the 'create path' output, but subsequent invocations do not produce the same output, and this is nomal. The "tur chcker reports path is down" is normal output. After the first run of multipath -v2, use multipath -l or multipath -ll to check the paths.

Also multipath -F then multipath -v2 produces the expected output.

topic Red Hat Multipath problem on MSA2324fc in MSA Storage

Red Hat Multipath problem on MSA2324fc

Re: Red Hat Multipath problem on MSA2324fc