2012-01-31 03:45 AM
Having assigned to a some blades running xen citrix some luns.
I have enabled ALUA
When I run: igroup show
on first filer:
OS Type: xen
Member: 50:01:43:80:04:26:3f:cc (logged in on: vtic, 0b)
Member: 50:01:43:80:04:26:3f:ce (logged in on: vtic, 0d)
Member: 50:01:43:80:04:26:41:10 (logged in on: 0b)
Member: 50:01:43:80:04:26:41:12 (logged in on: 0d)
|OS Type: xen|
|Member: 50:01:43:80:04:26:3f:cc (logged in on: vtic, 0b)|
|Member: 50:01:43:80:04:26:3f:ce (logged in on: vtic, 0d)|
|Member: 50:01:43:80:04:26:41:10 (logged in on: vtic, 0b)|
|Member: 50:01:43:80:04:26:41:12 (logged in on: vtic, 0d)|
1/Is it possible to force a host to shoose a path?
2/As my zoning look ok and on xen center a see 4 path for each lun what could be the errors?
2012-01-31 03:02 PM
I had a similar problem with XenServer and XenCenter, seems like XenCenter sometimes displays the wrong information. Use the embedded HBA tools on XenServer to get the accurate information. By default XenServer uses round-robin.
Qlogic HBA tool:
Emulex HBA tool:
2012-02-01 02:20 AM
found on citrix doc and i think it should be done on netapp both filer
Configuring Multipathing for Fiber Channel
1. Open a console session to the NetApp active-active controller configuration, set igroup to ALUA.
igroup set <initiator_group> alua yes
igroup show –v
2. Modify /etc/multipath-enabled.conf file to include the following in the devices section
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout "/sbin/mpath_prio_alua /dev/%n"
features "1 queue_if_no_path"