- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - Linux
- >
- Re: RedHat 4 U7 with QLogic HBAs can't see LUNs on...
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-24-2008 05:33 PM
тАО09-24-2008 05:33 PM
RedHat 4 U7 with QLogic HBAs can't see LUNs on second path
We have 4 Servers, 2 DL 580s and 2 DL 380s, with Qlogic HBAs, connected to an XP 24000. The 580s are running RHEL 4 Update 7 x86_64, the 380s are running RHEL 4 Update 7 i686. The servers are connected to the XP in a dual path configuration, through two separate switches.
Recently, all four servers lost the second path to the LUNs on the HBA. The 2 DL 580s see an ESL library on the port where the LUNs disappeared from, so it doesn't appear to be a cabling issue. The servers all lost the second path at the same time.
If I cat /proc/scsi/qla2xxx/0 and /proc/scsi/qla2xxx/1, I notice one of the targets is missing:
qla0:
SCSI Device Information:
scsi-qla0-adapter-node=5001438002000b85;
scsi-qla0-adapter-port=5001438002000b84;
scsi-qla0-target-0=100000e00222cc74;
scsi-qla0-target-1=100000e00242cfd4;
FC Port Information:
scsi-qla0-port-0=50060e8005b1cb21:50060e8005b1cb21:022600:1000;
scsi-qla0-port-1=100000e00202cc74:100000e00222cc74:028e00:82;
scsi-qla0-port-2=100000e00202cfd4:100000e00242cfd4:020e00:83;
qla1:
SCSI Device Information:
scsi-qla1-adapter-node=5001438002000b87;
scsi-qla1-adapter-port=5001438002000b86;
scsi-qla1-target-0=50060e8005b1cb31;
scsi-qla1-target-1=100000e00242cc74;
scsi-qla1-target-2=100000e00222cfd4;
FC Port Information:
scsi-qla1-port-0=50060e8005b1cb31:50060e8005b1cb31:022600:81;
scsi-qla1-port-1=100000e00202cc74:100000e00242cc74:028b00:82;
scsi-qla1-port-2=100000e00202cfd4:100000e00222cfd4:020e00:83;
I'm wondering if the missing target is why we're seeing the library but not the disks, what could be causing the target to disappear, and how we can get it back. I suspect it is a zoning issue, but our SAN team insists it is not.
Any help in this matter would be much appreciated.
Thanks
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 01:54 AM
тАО09-25-2008 01:54 AM
Re: RedHat 4 U7 with QLogic HBAs can't see LUNs on second path
Is PSP installed?
what does hp_rescan utility show. If its a zoning issue this will be apparent once hp_rescan -a is run.
Linux has a default multipath configuration built into the kernel.
I suspect wiring is at issue?
Was initrd modified to not include qla drivers?
Did this work on a prior release of RHEL 4.X
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 03:20 AM
тАО09-25-2008 03:20 AM
Re: RedHat 4 U7 with QLogic HBAs can't see LUNs on second path
Assuming you're using the HP driver bundle rather than the RHEL provided drivers (if not, why not?) then you can: -
cat /etc/modprobe.conf and confirm that ql2xfailover=1 is set. That will confirm that you're using the driver in failover mode and why you only see the LUN down qla2xxxx/0
If you want to be sure you have connectivity down both paths, then there are a number of options depending on how destructive to downtime you can be: -
1. The sure way is to reconfigure the driver to single-path. Change directory to /opt/hp/src/hp_qla2x00src and run set_parm and choose Single Path. Let it build initrd and reboot. You should then see your LUNs down qla2xxx/0 and /1. Rerun set_parm and choose XP Failover and again reboot.
2. If you have e.g. Cisco SAN switches then login to your device manager and look at the traffic down the paths. You'll see traffic down one of the ports, then disable/unplug that port and verify that you get data down the second.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 08:07 AM
тАО09-25-2008 08:07 AM
Re: RedHat 4 U7 with QLogic HBAs can't see LUNs on second path
[root@rsgisdp1 hp_fibreutils]# ./sysfs_scandisk 0
0:0:0:0 HP ESL9000 Series
0:0:1:0 HP Ultrium 2-SCSI
0:0:1:1 HP Ultrium 2-SCSI
[root@rsgisdp1 hp_fibreutils]# ./sysfs_scandisk 1
1:0:0:0 HP Ultrium 2-SCSI
1:0:0:1 HP Ultrium 2-SCSI
1:0:1:0 HP Ultrium 2-SCSI
1:0:1:1 HP Ultrium 2-SCSI
1:0:2:0 HP OPEN-V
1:0:2:1 HP OPEN-V
1:0:2:10 HP OPEN-V
1:0:2:11 HP OPEN-V
1:0:2:12 HP OPEN-V
1:0:2:13 HP OPEN-V
1:0:2:14 HP OPEN-V
1:0:2:15 HP OPEN-V
1:0:2:16 HP OPEN-V
1:0:2:17 HP OPEN-V
1:0:2:18 HP OPEN-V
1:0:2:19 HP OPEN-V
1:0:2:2 HP OPEN-V
1:0:2:20 HP OPEN-V
1:0:2:21 HP OPEN-V
1:0:2:22 HP OPEN-V
1:0:2:23 HP OPEN-V
1:0:2:24 HP OPEN-V
1:0:2:25 HP OPEN-V
1:0:2:26 HP OPEN-V
1:0:2:27 HP OPEN-V
1:0:2:28 HP OPEN-V
1:0:2:29 HP OPEN-V
1:0:2:3 HP OPEN-V
1:0:2:30 HP OPEN-V
1:0:2:31 HP OPEN-V
1:0:2:32 HP OPEN-V
1:0:2:33 HP OPEN-V
1:0:2:34 HP OPEN-V
1:0:2:35 HP OPEN-V
1:0:2:36 HP OPEN-V
1:0:2:37 HP OPEN-V
1:0:2:38 HP OPEN-V
1:0:2:39 HP OPEN-V
1:0:2:4 HP OPEN-V
1:0:2:40 HP OPEN-V
1:0:2:41 HP OPEN-V
1:0:2:42 HP OPEN-V
1:0:2:43 HP OPEN-V
1:0:2:5 HP OPEN-V
1:0:2:6 HP OPEN-V
1:0:2:7 HP OPEN-V
1:0:2:8 HP OPEN-V
1:0:2:9 HP OPEN-V
[root@rsgisdp1 hp_fibreutils]# ./hp_rescan -a
Sending rescan signal to /proc/scsi/qla2xxx/0...
Sending rescan signal to /proc/scsi/qla2xxx/1...
Adding legacy tape devices to /proc/scsi/device_info
Scanning /proc/scsi/qla2xxx/0, target 1, LUN 1
Scanning /proc/scsi/qla2xxx/1, target 2, LUN 43
scsi0 00 00 00 HP ESL9000 3.60 Medium
scsi0 00 01 00 HP Ultrium F6AW Sequential-Access
scsi0 00 01 01 HP Ultrium F6AW Sequential-Access
scsi0 00 00 01 HP Ultrium F6AW Sequential-Access
scsi0 00 00 02 HP Ultrium F6AW Sequential-Access
scsi1 00 00 00 HP Ultrium F6AW Sequential-Access
scsi1 00 00 01 HP Ultrium F6AW Sequential-Access
scsi1 00 01 00 HP Ultrium F6AW Sequential-Access
scsi1 00 01 01 HP Ultrium F6AW Sequential-Access
scsi1 00 02 00 HP OPEN-V 6003 Direct-Access
scsi1 00 02 01 HP OPEN-V 6003 Direct-Access
scsi1 00 02 02 HP OPEN-V 6003 Direct-Access
scsi1 00 02 03 HP OPEN-V 6003 Direct-Access
scsi1 00 02 04 HP OPEN-V 6003 Direct-Access
scsi1 00 02 05 HP OPEN-V 6003 Direct-Access
scsi1 00 02 06 HP OPEN-V 6003 Direct-Access
scsi1 00 02 07 HP OPEN-V 6003 Direct-Access
scsi1 00 02 08 HP OPEN-V 6003 Direct-Access
scsi1 00 02 09 HP OPEN-V 6003 Direct-Access
scsi1 00 02 10 HP OPEN-V 6003 Direct-Access
scsi1 00 02 11 HP OPEN-V 6003 Direct-Access
scsi1 00 02 12 HP OPEN-V 6003 Direct-Access
scsi1 00 02 13 HP OPEN-V 6003 Direct-Access
scsi1 00 02 14 HP OPEN-V 6003 Direct-Access
scsi1 00 02 15 HP OPEN-V 6003 Direct-Access
scsi1 00 02 16 HP OPEN-V 6003 Direct-Access
scsi1 00 02 17 HP OPEN-V 6003 Direct-Access
scsi1 00 02 18 HP OPEN-V 6003 Direct-Access
scsi1 00 02 19 HP OPEN-V 6003 Direct-Access
scsi1 00 02 20 HP OPEN-V 6003 Direct-Access
scsi1 00 02 21 HP OPEN-V 6003 Direct-Access
scsi1 00 02 22 HP OPEN-V 6003 Direct-Access
scsi1 00 02 23 HP OPEN-V 6003 Direct-Access
scsi1 00 02 24 HP OPEN-V 6003 Direct-Access
scsi1 00 02 25 HP OPEN-V 6003 Direct-Access
scsi1 00 02 26 HP OPEN-V 6003 Direct-Access
scsi1 00 02 27 HP OPEN-V 6003 Direct-Access
scsi1 00 02 28 HP OPEN-V 6003 Direct-Access
scsi1 00 02 29 HP OPEN-V 6003 Direct-Access
scsi1 00 02 30 HP OPEN-V 6003 Direct-Access
scsi1 00 02 31 HP OPEN-V 6003 Direct-Access
scsi1 00 02 32 HP OPEN-V 6003 Direct-Access
scsi1 00 02 33 HP OPEN-V 6003 Direct-Access
scsi1 00 02 34 HP OPEN-V 6003 Direct-Access
scsi1 00 02 35 HP OPEN-V 6003 Direct-Access
scsi1 00 02 36 HP OPEN-V 6003 Direct-Access
scsi1 00 02 37 HP OPEN-V 6003 Direct-Access
scsi1 00 02 38 HP OPEN-V 6003 Direct-Access
scsi1 00 02 39 HP OPEN-V 6003 Direct-Access
scsi1 00 02 40 HP OPEN-V 6003 Direct-Access
scsi1 00 02 41 HP OPEN-V 6003 Direct-Access
scsi1 00 02 42 HP OPEN-V 6003 Direct-Access
scsi1 00 02 43 HP OPEN-V 6003 Direct-Access
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 10:16 AM
тАО09-25-2008 10:16 AM
Re: RedHat 4 U7 with QLogic HBAs can't see LUNs on second path
When I run hp_rescan, it only seems to scan up to lun1 on qla0:
Scanning /proc/scsi/qla2xxx/0, target 1, LUN 1
Scanning /proc/scsi/qla2xxx/1, target 2, LUN 43
scsi0 00 00 00 HP ESL9000 3.60 Medium
scsi0 00 01 00 HP Ultrium F6AW Sequential-Access
scsi0 00 01 01 HP Ultrium F6AW Sequential-Access
scsi0 00 00 01 HP Ultrium F6AW Sequential-Access
scsi0 00 00 02 HP Ultrium F6AW Sequential-Access
scsi1 00 00 00 HP Ultrium F6AW Sequential-Access
scsi1 00 00 01 HP Ultrium F6AW Sequential-Access
scsi1 00 01 00 HP Ultrium F6AW Sequential-Access
scsi1 00 01 01 HP Ultrium F6AW Sequential-Access
scsi1 00 02 00 HP OPEN-V 6003 Direct-Access
scsi1 00 02 01 HP OPEN-V 6003 Direct-Access
scsi1 00 02 02 HP OPEN-V 6003 Direct-Access
scsi1 00 02 03 HP OPEN-V 6003 Direct-Access
scsi1 00 02 04 HP OPEN-V 6003 Direct-Access
scsi1 00 02 05 HP OPEN-V 6003 Direct-Access
scsi1 00 02 06 HP OPEN-V 6003 Direct-Access
scsi1 00 02 07 HP OPEN-V 6003 Direct-Access
scsi1 00 02 08 HP OPEN-V 6003 Direct-Access
scsi1 00 02 09 HP OPEN-V 6003 Direct-Access
scsi1 00 02 10 HP OPEN-V 6003 Direct-Access
scsi1 00 02 11 HP OPEN-V 6003 Direct-Access
scsi1 00 02 12 HP OPEN-V 6003 Direct-Access
scsi1 00 02 13 HP OPEN-V 6003 Direct-Access
scsi1 00 02 14 HP OPEN-V 6003 Direct-Access
scsi1 00 02 15 HP OPEN-V 6003 Direct-Access
scsi1 00 02 16 HP OPEN-V 6003 Direct-Access
scsi1 00 02 17 HP OPEN-V 6003 Direct-Access
scsi1 00 02 18 HP OPEN-V 6003 Direct-Access
scsi1 00 02 19 HP OPEN-V 6003 Direct-Access
scsi1 00 02 20 HP OPEN-V 6003 Direct-Access
scsi1 00 02 21 HP OPEN-V 6003 Direct-Access
scsi1 00 02 22 HP OPEN-V 6003 Direct-Access
scsi1 00 02 23 HP OPEN-V 6003 Direct-Access
scsi1 00 02 24 HP OPEN-V 6003 Direct-Access
scsi1 00 02 25 HP OPEN-V 6003 Direct-Access
scsi1 00 02 26 HP OPEN-V 6003 Direct-Access
scsi1 00 02 27 HP OPEN-V 6003 Direct-Access
scsi1 00 02 28 HP OPEN-V 6003 Direct-Access
scsi1 00 02 29 HP OPEN-V 6003 Direct-Access
scsi1 00 02 30 HP OPEN-V 6003 Direct-Access
scsi1 00 02 31 HP OPEN-V 6003 Direct-Access
scsi1 00 02 32 HP OPEN-V 6003 Direct-Access
scsi1 00 02 33 HP OPEN-V 6003 Direct-Access
scsi1 00 02 34 HP OPEN-V 6003 Direct-Access
scsi1 00 02 35 HP OPEN-V 6003 Direct-Access
scsi1 00 02 36 HP OPEN-V 6003 Direct-Access
scsi1 00 02 37 HP OPEN-V 6003 Direct-Access
scsi1 00 02 38 HP OPEN-V 6003 Direct-Access
scsi1 00 02 39 HP OPEN-V 6003 Direct-Access
scsi1 00 02 40 HP OPEN-V 6003 Direct-Access
scsi1 00 02 41 HP OPEN-V 6003 Direct-Access
scsi1 00 02 42 HP OPEN-V 6003 Direct-Access
scsi1 00 02 43 HP OPEN-V 6003 Direct-Access
On 2 of the hosts we were initially using the RedHat multipath software (multipathd). Not long before the problem started to occur we installed the HPDM multipath software. On the other 2 hosts, we're using Veritas for multipathing.
The drivers are being loaded, we've tried with and without failover enabled.
We haven't used a prior RedHat version, this is a new environment.
Simon,
We've tried the qlogic driver with failover enabled and disabled, we see the same thing each time. We're using the HP Qlogic drivers.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-02-2008 09:55 AM
тАО10-02-2008 09:55 AM
Re: RedHat 4 U7 with QLogic HBAs can't see LUNs on second path
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-02-2008 09:56 AM
тАО10-02-2008 09:56 AM