cannot mount LUNs

[Don Peterson]

I did check that earlier and it looked fine.  But then I logged into the other SP a little while ago and noticed something weird.
The storage group assigned to the host was ~management; I don't know where that came from and why the SP's would have different info.
I removed the host from the storage group and added it back on that SP, it then showed the correct group.
I rebooted the host thinking my problem might be solved, but I still have the same issue.
The host is still only showing the ghost LUNs, 4 of them.  I'm thinking that maybe I should reboot each SP; but that require me to disable the write cache and performance would suffer.  Any other thoughts?
Thanks



-----Original Message-----
From: Bahadir Kiziltan [mailto:bahadir.kiziltan at gmail.com]
Sent: Wednesday, December 12, 2007 1:44 PM
To: Don Peterson
Cc: linux-poweredge at dell.com
Subject: Re: cannot mount LUNs

On Dec 12, 2007 4:29 PM, Don Peterson <dpeterson at sterilite.com> wrote:
>
>
> I am having an issue with one of my PowerEdge 6650's running RedHat 2.1
> It froze last night and I had to hard boot it; since then it will not mount
> any LUNs on our CX700.
> I see the following errors if I do a dmesg:
>
> Attached scsi disk sdf at scsi3, channel 0, id 1, lun 0
> sdf : READ CAPACITY failed.
> sdf : status = 1, message = 00, host = 0, driver = 08
> Current sd00:00: sense key Illegal Request
> Additional sense indicates Logical unit not supported
> sdf : block size assumed to be 512 bytes, disk size 1GB.
>  sdf: I/O error: dev 08:50, sector 0
>  unable to read partition table
>
> It will list this for 5 or 6 disks, and if I try to fdisk one of them I get
> the error unable to read /dev/sd*
> Nothing has changed as far as zoning on the switches or configuration with
> the SAN.
> I can do a navicli -h 172.20.0.57 getlun and see all the LUNs on the SAN.
> Navisphere shows the host registered and logged in .
> My other hosts are fine, they are not having any issues connecting to the
> SAN.
> Any suggestions are appreciated...
>
> Thanks,
> Don


sdf : block size assumed to be 512 bytes, disk size 1GB.

this is a ghost lun, anyway.

could you please check the info of any initiator related to
such host. From navisphere gui, right click on the storage system
and select "connectivity status" then highlight a related initiator then
click on info button. Check the "Storage Group" text box if it shows
unexpected string like "unmanaged".

bahadir.

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