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Old 07-07-2009, 06:39 PM   #1
pradhanparas
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Registered: Oct 2006
Posts: 14

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8 Luns instead of 2


Hi,

I have a qlogic fibre channel card installed in a CentOS 5.3 server.

Dmesg o/p:
--------------------------------------------------
QLogic Fibre Channel HBA Driver
QLogic Fibre Channel HBA Driver: 8.02.00.06.05.03-k
QLogic QLA2340 - 133MHz PCI-X to 2Gb FC, Single Channel
--------------------------------------------------------------------

It looks like the card is working properly. But the problem is , 2 Luns of 38 GBs are allocated. But in my CentOS box I can see 8 devices in /dev ie. sdc, sdd, sde, sdf, sdg, sdh, sdi, sdj.

fdisk -l reports:

--
Disk /dev/sdc doesn't contain a valid partition table

Disk /dev/sdd: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sdd doesn't contain a valid partition table

Disk /dev/sde: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdc doesn't contain a valid partition table

Disk /dev/sdd: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sdd doesn't contain a valid partition table

Disk /dev/sde: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sde doesn't contain a valid partition table

Disk /dev/sdf: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sdf: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

.. and so on..


What might be the problem.

Thanks in Adv
Paras.
 
Old 07-08-2009, 10:58 AM   #2
LiamFromLeeds
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Registered: Dec 2006
Distribution: Arch
Posts: 44

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Have you got multiple fibre paths to the same disks? If so, you probably need a multi-path deamon.
 
Old 07-09-2009, 10:13 AM   #3
pradhanparas
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Registered: Oct 2006
Posts: 14

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I compiled the qlogic drivers from the src file found at qlogic.com and it seems to be fine now (still testing).

BTW, how do I know if multi-path daemon is running or not.

Thanks for your answer
Paras.
 
Old 08-04-2009, 04:23 AM   #4
archtoad6
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Registered: Oct 2004
Location: Houston, TX (usa)
Distribution: MEPIS, Debian, Knoppix,
Posts: 4,727
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I have no experience w/ fiber channel, so this may be completely wrong; also you seem to say that after compiling & installing the mfrs. drivers, the problem is solved; but, your fdisk -l output reminds me of my LVM set up -- do/did you by chance have LVM running?

What does you fdisk -l look like now? [Hint, put the o/p inside [code] [/code] tags.]
 
Old 08-05-2009, 10:24 AM   #5
pradhanparas
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Registered: Oct 2006
Posts: 14

Original Poster
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fdisk -l takes my SAN connected LUNS as normal partitions.

here the o/p

root@cvtst1 ~]# fdisk -l

Disk /dev/sda: 73.4 GB, 73407820800 bytes
255 heads, 63 sectors/track, 8924 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 65 522081 83 Linux
/dev/sda2 66 8924 71159917+ 8e Linux LVM

Disk /dev/sdc: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Device Boot Start End Blocks Id System
/dev/sdc1 1 34275 35097584 8e Linux LVM

Disk /dev/sdd: 35.9 GB, 35939942400 bytes
64 heads, 32 sectors/track, 34275 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes

Device Boot Start End Blocks Id System
/dev/sdd1 1 11 11248 83 Linux
[root@cvtst1 ~]#
----

Here sdc1 is my SAN connected storage.


Paras.
 
Old 08-06-2009, 07:16 AM   #6
archtoad6
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Location: Houston, TX (usa)
Distribution: MEPIS, Debian, Knoppix,
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I'm ready to give up on this thread: I didn't ask for a post of more fdisk output, I asked that fdisk output be put in [CODE][/CODE] blocks. If you don't understand [CODE][/CODE] blocks, ask for help w/ them.

When I asked, "do/did you by chance have LVM running?", a simple yes would have sufficed, I didn't need to wade through more improperly formatted CLI output.
 
Old 08-07-2009, 10:22 AM   #7
pradhanparas
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Registered: Oct 2006
Posts: 14

Original Poster
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I did what i think I am supposed to write/reply.

So Bye bye archtoad6

Last edited by pradhanparas; 08-07-2009 at 10:24 AM.
 
  


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