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LUN SCAN ISSUE on Linux

cherif
Occasional Visitor

LUN SCAN ISSUE on Linux

Hi,

My SAN is active/active.

We have an EVA 6000 san, and each of our servers have 2 hba, which connect to 2 seperate frabric switches, which in turn connects to the 2 SAN controllers.

I manage multipathing with Qlogic HBAs – failover.

I use RSM job to create Demand Allocated Snaps and present theme to linux host but will see the LUN twice.
can you help me to fix the issue ?

qla2400 0000:4c:00.0: Scheduling rescan for new luns...
qla2400 0000:49:00.0: Scheduling rescan for new luns...
qla2400 0000:46:00.0: Scheduling rescan for new luns...
Vendor: HP Model: HSV200 Rev: 6100
Type: Direct-Access ANSI SCSI revision: 05
qla2400 0000:4c:00.0: scsi(0:0:0:12): Enabled tagged queuing, queue depth 16.
SCSI device sdi: 83886080 512-byte hdwr sectors (42950 MB)
SCSI device sdi: drive cache: write through
SCSI device sdi: 83886080 512-byte hdwr sectors (42950 MB)
SCSI device sdi: drive cache: write through
sdi: sdi1
Attached scsi disk sdi at scsi0, channel 0, id 0, lun 12
Attached scsi generic sg9 at scsi0, channel 0, id 0, lun 12, type 0
Vendor: HP Model: HSV200 Rev: 6100
Type: Direct-Access ANSI SCSI revision: 05
qla2400 0000:49:00.0: scsi(1:0:4:12): Enabled tagged queuing, queue depth 16.
SCSI device sdj: 83886080 512-byte hdwr sectors (42950 MB)
SCSI device sdj: drive cache: write through
SCSI device sdj: 83886080 512-byte hdwr sectors (42950 MB)
SCSI device sdj: drive cache: write through
sdj: sdj1
Attached scsi disk sdj at scsi1, channel 0, id 4, lun 12
Attached scsi generic sg10 at scsi1, channel 0, id 4, lun 12, type 0


2 REPLIES
Rob Leadbeater
Honored Contributor

Re: LUN SCAN ISSUE on Linux

Hi,

Have you installed the HP Q-Logic drivers, or are you using the standard ones ?

If the latter, then you may want to install the HP version. You can probably tell, by seeing whether the command "lssd" exists, which is part of one of the HP packages.

It would also be useful to know if this is only happening on the "snap" LUNs...

Cheers,

Rob
cherif
Occasional Visitor

Re: LUN SCAN ISSUE on Linux

Hi,

I installed the HP Q-Logic drivers.And it only happening on the "snap" LUNs.

Best regards,

Mohamed