Long version: The different sd<x> devices represent different views on the same disk over different paths (hence *multi*-path). Usually you don't use these (because every one of them represents one single connection to the disk) but the multipath-device.
Your actual problem probably is that the additional devices mess up your LVM2 configuration. This is taken care of the following way:
The first layer to deal with the LUNs from SAN is the multipath-software. Make sure you give meaningful alias names in "/etc/multipath.conf". That makes administration a lot easier. I use <vgname>pv<nr> (like: "myvgpv01", "myvgpv02", etc.) for the disks. "/etc/multipath.conf" looks like:
This will create these disk aliases and the respective udev rules should create device mappings in "/dev/mpath" like this:
After getting this to work you have to configure the LVM2 by creating a filter-rule and a directory to look for possible PVs. The configuration file is "/etc/lvm/lvm.conf":
You should by now be able to use "pvscan"/"vgscan" to find your VGs and LVM2 should exclusively make use of the multipath devices.
I have solaris 10 sparc. I installed a Qlogic hba card.
This card is connected on a brocade switch and the brocade is connected on 2 different controllers on a Hitachi disk bay.
I formated 2 luns. On my solaris system, i have 4 disk.
How to configure solaris 10 to fix the dual disk view.
... (4 Replies)
Hi,
I saw your post on the forums about how to setup IP multipathing. I wanted your help on the below situation .
I have 2 servers A and B . Now they should be connected to 2 network switches . S1 and S2.
Now is it possible to have IP Multipathing on each of the servers as follows ?
... (0 Replies)
Hii Every One,
I am working on SUN server installed with Solaris-10,
1) I want to assign a vertual IP to a interface (ce1).
2) And with that vertual IP and one more interface (ce2), I want to do IP
multipathing.
So, kindely help me to achive above tasks by discribing... (2 Replies)
Hi,
Basically the original configuration on my Solaris 9 server was two LUNs configured as Veritas file systems that were connected to a NetApp filer (filer1). These two LUNs are still configured on the server - but are not being used. They are there as a backup just in case the new... (0 Replies)
Hai
we using emc storage which is conneted to M5000 through san switch.
we asign 13 luns but in server it is showing 22 luns.
i enable the solaris multipathing (MPxIO)
#more /kernel/drv/fp.conf in that file
MPxio-disable=no
#mpathadm list lu
it shows ... (2 Replies)
Hello,
I turned on the server multipathing:
# uname -a
SunOS caiman 5.10 Generic_141444-09 sun4v sparc SUNW,T5140
stmsboot -D fp -e
And after a reboot the server, multipathing is not enable:
# stmsboot -L
stmsboot: MPxIO is not enabled
stmsboot: MPxIO disabled
# ls /dev/dsk... (4 Replies)
Hi,
I know the concept of multipathing, but would like to know how to configure multipathing in AIX.
or software/driver is by default present in AIX??????
How to find out wheather multipathing is configured in AIX?????
Regards,
Manu (4 Replies)
Hi folks.
When issuing a multipath -ll on my server, i see something that is bugging me...
# multipath -ll
2000b0803ce002582 dm-10 Pillar,Axiom 600
size=129G features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 0:0:0:4 sdd 8:48 active ready running... (0 Replies)
What is the following output telling me?
fget_config -Av
---dar0---
User array name = 'BSNorth-DS4300'
dac3 ACTIVE dacNONE ACTIVE
Disk DAC LUN Logical Drive
hdisk4 dac3 0 TestDiskForAll
---dar1---
User array name = 'BSNorth-DS4300'
dac2 ACTIVE dacNONE ACTIVE
Disk DAC ... (0 Replies)
I have a couple of questions regarding multipath.
If I do vgdisplay vg01, I see it is using 1 PV: /dev/dm-13
If I type multipath -ll I see dm-9, dm-10, dm-11, dm-12, but do not see dm-13. Is my vg01 multipathed? How can I actually know for sure?
Secondly, let's say this time vg01 says... (1 Reply)