HPE EVA Storage

Storage - Dual path connectivity.

Regular Advisor

Storage - Dual path connectivity.



I have ProLiant BL465c G1 server which is running with SAN Boot disk. Want to confirm whether dual path connectivity is configured for SAN or not..


Below I have pasted the few commands output, please refer the same and confirm whether dual path connectivity is configured or not.


[root@atls0818a etc]# uname -a
Linux atls0818a.am1.mnet 2.6.18-128.el5 #1 SMP Wed Dec 17 11:42:39 EST 2008 i686 athlon i386 GNU/Linux
[root@atls0818a etc]#


[root@atls0818a etc]# cat redhat-release
Red Hat Enterprise Linux Server release 5.3 (Tikanga)
[root@atls0818a etc]#


[root@atls0818a ~]# lssd
sda  0,0,0,1         HP HSV200 6110
[root@atls0818a ~]#


[root@atls0818a ~]# fdisk -l

Disk /dev/sda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        5221    41833260   8e  Linux LVM
[root@atls0818a ~]#

[root@atls0818a ~]# rpm -qa | grep multipath


[root@atls0818a ~]# chkconfig --list multipathd
multipathd      0:off   1:off   2:off   3:off   4:off   5:off   6:off


[root@atls0818a ~]# /sbin/multipath -v2 -d -ll


[root@atls0818a ~]# /sbin/multipath -v3 -d -ll
dm-0: blacklisted
dm-1: blacklisted
md0: blacklisted
ram0: blacklisted
ram10: blacklisted
ram11: blacklisted
ram12: blacklisted
ram13: blacklisted
ram14: blacklisted
ram15: blacklisted
ram1: blacklisted
ram2: blacklisted
ram3: blacklisted
ram4: blacklisted
ram5: blacklisted
ram6: blacklisted
ram7: blacklisted
ram8: blacklisted
ram9: blacklisted
sda: blacklisted
===== no paths =====


[root@atls0818a ~]# grep -vE '^#|^ *$' /etc/multipath.conf
blacklist {
        devnode "*"
defaults {
        user_friendly_names yes


[root@atls0818a ~]# for MultiPath in $(/sbin/multipath -v1 -d -l); do ls -l /dev/mapper/${MultiPath}; done
[root@atls0818a ~]#


[root@atls0818a ~]# cat /var/lib/multipath/bindings
cat: /var/lib/multipath/bindings: No such file or directory
[root@atls0818a ~]#


[root@atls0818a ~]# adapter_info
/proc/scsi/qla2xxx/1: STATE=READY WWNN=50060b0000c2662f WWPN=50060b0000c2662e
/proc/scsi/qla2xxx/0: STATE=READY WWNN=50060b0000c2662d WWPN=50060b0000c2662c
[root@atls0818a ~]#


[root@atls0818a ~]# cat /etc/hp_qla2x00.conf
qdepth = 16
port_down_retry_count = 30
login_retry_count = 30
failover = 1
load_balancing = 1
auto_restore = 0xa
auto_compile = y
config_required = 0
[root@atls0818a ~]#


[root@atls0818a ~]# cat /etc/modprobe.conf
alias eth0 tg3
alias eth1 tg3
alias eth2 bnx2
alias eth3 bnx2
alias scsi_hostadapter1 usb-storage
alias scsi_hostadapter2 qla2xxx_conf
alias scsi_hostadapter3 qla2xxx
alias scsi_hostadapter4 qla2300
alias scsi_hostadapter5 qla2400
alias scsi_hostadapter1 usb-storage
options qla2xxx  ql2xmaxqdepth=16 qlport_down_retry=30 ql2xloginretrycount=30 ql2xfailover=1 ql2xlbType=1 ql2xautorestore=0xa ConfigRequired=0
remove qla2xxx /sbin/modprobe -r --first-time --ignore-remove qla2xxx && { /sbin/modprobe -r --ignore-remove qla2xxx_conf; }
[root@atls0818a ~]#


Thanks & Regards,

Sudhakaran K