Multipath not working on RHEL 5

Masthan — Fri, 27 Oct 2006 04:56:48 GMT

Hi All,

On my redhat m/c I installed device-mapper-multipath packages and also i started multipath daemon. But multipath command is not showing any devices. An MSA 1000 is connected to my m/c. In the google i read that, MSA 1000 is automatically detected by the multipath daemon. The verbosity o/p multipath command is as follows.

# multipath -v2 -d
8:32: size 142261440, expected 71130720. Discard
8:48: size 142261440, expected 71130720. Discard
8:64: size 142261440, expected 71130720. Discard
: 3500805f300000be0500805f300000be1 COMPAQ,MSA1000 VOLUME
[size=34G][features=0][hwhandler=0]
\_ round-robin 0 [prio=1][undef]
\_ 0:0:0:1 sda 8:0 [undef][ready]
\_ round-robin 0 [prio=1][undef]
\_ 0:0:0:2 sdb 8:16 [undef][ready]
\_ round-robin 0 [prio=1][undef]
\_ 0:0:0:3 sdc 8:32 [undef][ready]
\_ round-robin 0 [prio=1][undef]
\_ 0:0:0:4 sdd 8:48 [undef][ready]
\_ round-robin 0 [prio=1][undef]
\_ 0:0:0:5 sde 8:64 [undef][ready]
[root@hazlx10 device-mapper-multipath-0.4.7]# multipath -l
[root@hazlx10 device-mapper-multipath-0.4.7]# multipath -v2 -l
[root@hazlx10 device-mapper-multipath-0.4.7]# multipath -v6 -l
cciss!c0d0: blacklisted
cciss!c0d1: blacklisted
cciss!c0d2: blacklisted
cciss!c0d3: blacklisted
cciss!c0d4: blacklisted
cciss!c0d5: blacklisted
cciss!c0d6: blacklisted
dm-0: blacklisted
dm-1: blacklisted
fd0: blacklisted
hda: blacklisted
md0: blacklisted
ram0: blacklisted
ram10: blacklisted
ram11: blacklisted
ram12: blacklisted
ram13: blacklisted
ram14: blacklisted
ram15: blacklisted
ram1: blacklisted
ram2: blacklisted
ram3: blacklisted
ram4: blacklisted
ram5: blacklisted
ram6: blacklisted
ram7: blacklisted
ram8: blacklisted
ram9: blacklisted
sda: not found in pathvec
sda: mask = 0x1
sda: bus = 1
sda: dev_t = 8:0
sda: size = 71130720
sda: vendor = COMPAQ
sda: product = MSA1000 VOLUME
sda: rev = 4.30
sda: h:b:t:l = 0:0:0:1
sda: tgt_node_name = 0x500805f300000be0
sdb: not found in pathvec
sdb: mask = 0x1
sdb: bus = 1
sdb: dev_t = 8:16
sdb: size = 71130720
sdb: vendor = COMPAQ
sdb: product = MSA1000 VOLUME
sdb: rev = 4.30
sdb: h:b:t:l = 0:0:0:2
sdb: tgt_node_name = 0x500805f300000be0
sdc: not found in pathvec
sdc: mask = 0x1
sdc: bus = 1
sdc: dev_t = 8:32
sdc: size = 142261440
sdc: vendor = COMPAQ
sdc: product = MSA1000 VOLUME
sdc: rev = 4.30
sdc: h:b:t:l = 0:0:0:3
sdc: tgt_node_name = 0x500805f300000be0
sdd: not found in pathvec
sdd: mask = 0x1
sdd: bus = 1
sdd: dev_t = 8:48
sdd: size = 142261440
sdd: vendor = COMPAQ
sdd: product = MSA1000 VOLUME
sdd: rev = 4.30
sdd: h:b:t:l = 0:0:0:4
sdd: tgt_node_name = 0x500805f300000be0
sde: not found in pathvec
sde: mask = 0x1
sde: bus = 1
sde: dev_t = 8:64
sde: size = 142261440
sde: vendor = COMPAQ
sde: product = MSA1000 VOLUME
sde: rev = 4.30
sde: h:b:t:l = 0:0:0:5
sde: tgt_node_name = 0x500805f300000be0
===== paths list =====
uuid hcil dev dev_t pri dm_st chk_st vend/prod/rev
0:0:0:1 sda 8:0 0 [undef][undef] COMPAQ,MSA1000 VOLUME
0:0:0:2 sdb 8:16 0 [undef][undef] COMPAQ,MSA1000 VOLUME
0:0:0:3 sdc 8:32 0 [undef][undef] COMPAQ,MSA1000 VOLUME
0:0:0:4 sdd 8:48 0 [undef][undef] COMPAQ,MSA1000 VOLUME
0:0:0:5 sde 8:64 0 [undef][undef] COMPAQ,MSA1000 VOLUME

Your help is appreciated.

-Masthan

Re: Multipath not working on RHEL 5

Ross Minkov — Sun, 29 Oct 2006 13:43:40 GMT

Masthan,

See if this doc can help you -- Device Mapper Configuration Guide for HP Arrays -- http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00635587/c00635587.pdf?jumpid=reg_R1002_USEN.

-Ross

Re: Multipath not working on RHEL 5

Asko Tuomela — Fri, 05 Oct 2007 09:13:33 GMT

Hi Masthan,

We have EVA6100 and there's the same problem:

multipath -v3 -d says:
...
sda: not found in pathvec
...
sdb: not found in pathvec
...
sdc: not found in pathvec
...
sdd: not found in pathvec
...

Ross Minkov's link is not available anymore.

Did you solve the problem? It would be nice to know the solution.

With Regards,
Asko Tuomela
IT department
VLP

Re: Multipath not working on RHEL 5

Steven E. Protter — Sat, 06 Oct 2007 12:10:06 GMT

Shalom Asko,

When this thread was written RHEL 5 was non-production beta software.

If you wish to get further assistance from the community I suggest you make your own post so you can properly reward help with point assignment.

If you feel this thread has useful information in it, include a link to it.

SEP

Re: Multipath not working on RHEL 5

Asko Tuomela — Mon, 08 Oct 2007 02:29:32 GMT

Shalom Steven!

Ok, I'll do that if needed.

BTW, we are using Debian which isn't supported Linux distribution. We want to use it anyway, regardless it's not supported.

I think multipath-tools should work, just need to get working configuration for EVA6100.

God bless you,
-Asko

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