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тАО03-19-2011 06:04 AM
тАО03-19-2011 06:04 AM
RHEL 4 LUNS not visible on one PATH
Thanks
Brian.
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тАО03-19-2011 09:24 AM
тАО03-19-2011 09:24 AM
Re: RHEL 4 LUNS not visible on one PATH
echo 1 > /sys/class/fc_host/host2/issue_lip
It should cause the 2nd FC card to reset itself, making the fibre link go down and then up again. Since your 2nd card is not seeing any LUNs at the moment, this should not cause any harm.
You should see the link down/link up messages at the end of the "dmesg" listing.
Then scan again:
echo "- - -" > /sys/class/scsi_host/host2/scan
If this does not help, there might be problems with your SAN zoning/masking settings. In other words, either a SAN switch or the storage system itself is not allowing the 2nd HBA to see the LUNs. In that case, verify that your SAN admin has the correct WWN for your 2nd HBA, and ask him/her to double-check the SAN configuration.
MK
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тАО03-19-2011 11:57 AM
тАО03-19-2011 11:57 AM
Re: RHEL 4 LUNS not visible on one PATH
I do not even see a fc_host under /sys/class, i only see scsi_host. Please let me know what should i do?
Thanks
Brian.
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тАО03-19-2011 12:01 PM
тАО03-19-2011 12:01 PM
Re: RHEL 4 LUNS not visible on one PATH
Thanks
Brian
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тАО03-21-2011 07:01 AM
тАО03-21-2011 07:01 AM
Re: RHEL 4 LUNS not visible on one PATH
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Brian
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тАО03-21-2011 08:53 AM
тАО03-21-2011 08:53 AM
Re: RHEL 4 LUNS not visible on one PATH
Other things to check, make sure host2 is indeed your 2nd Qlogic HBA.
Under sys/class/scsi_host/host2:
cat out the following:
model*, state
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тАО03-21-2011 11:03 AM
тАО03-21-2011 11:03 AM
Re: RHEL 4 LUNS not visible on one PATH
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Brian
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тАО03-21-2011 11:14 AM
тАО03-21-2011 11:14 AM
Re: RHEL 4 LUNS not visible on one PATH
If all checks well and good, then next to check is your zoning and EVA Host Group definition sir -- mak sure the hosthroup has the correct HBA wwids defined.
Ciao.
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тАО03-21-2011 12:05 PM
тАО03-21-2011 12:05 PM
Re: RHEL 4 LUNS not visible on one PATH
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Brian
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тАО03-21-2011 12:28 PM
тАО03-21-2011 12:28 PM
Re: RHEL 4 LUNS not visible on one PATH
HBA Paramaters
Select HBA
Display HBA Parameters
First Line should show the Switch Port ID:
HBA Instance 6: QLE2462 Port 1 WWPN 21-00-00-1B-32-97-83-61 PortID 05-E6-00
In my case, it is logged on on Switch Port ID 0x05e600 on my Brocade SW48K Director.
HTH
Normally though, such data is in a file in /sys/class/fc_host/hostN/port_id
But you seem to say that path is not on an RHEL 4 system.