AIX

Hello,

Can someone point to me document or the method to make failover for VIO Servers ?

I have one VIO_Server1 which has 4 AIX LPARS
- From the VIO_SERVER1 I have assigned virtual SCSI DISK to the four LPARS
- For Ethernet I have used LHEA

So, if my VIO Server1 crashes all the LPARS should move to VIO_SERVER2

1) How can I make this possible ?


Second Question
From my VIO_Server_1 I have assigned a disk HDISK1 to LPAR_5
From my VIO_Server_2 I have assgined a disk HDISK2 to LPAR_5

In LPAR5 i see two DISK
lspv
hdisk1
hdisk2

I load AIX 6 and mirror HDISK1 and HDISK2

If VIO_Server_1 goes down I still have HDISK2
will this work ?



IBM VIO WIKI http://www.ibm.com/developerworks/wi...ualization/VIO

Are the physical disks on a SAN or local?

The O/S AIX 6. is from the local disks of VIO.

Local Disks of VIO_1 Server has been assigned to LPARs


Also, does anyone know if there is load balancing option available for VIO

Two VIO servers and One Lpar

can there be a load balancing ?

Thanks

If you mirror the disk from VIO1 to the disk from VIO2 then you'd be OK if one of the VIOS is down/rebooted. Is the LHEA presented from each VIO or is it assigned directly to the LPAR?

I have not mirrored the VIO_1 with VIO_2

Here how it is setup at the moment.

VIO_2 = NOT ACTIVE

VIO_1 = Active

VIO_1 has 3 internal DISK
hdisk0 -- rootvg
hdisk1 -- NONE
hdisk2 -- lpars_rootvg

so what I have done, I have mirrored hdisk0 with hdisk1
hdisk0 -- rootvg
hdisk1 -- rootvg
hdisk2 -- lpars_rootvg

hdisk2 --> I have made small LVs and given it to LPARS
mklv -lv lpar_1_rootvg lpars_rootvg 50G
mklv -lv lpar_2_rootvg lpars_rootvg 50G
mklv -lv lpar_3_rootvg lpars_rootvg 50G
mklv -lv lpar_4_rootvg lpars_rootvg 50G

then assigned them to LPARS
mkvdev -vdev lpar_1_rootvg -vadapter vhost1
mkvdev -vdev lpar_2_rootvg -vadapter vhost2
mkvdev -vdev lpar_3_rootvg -vadapter vhost3
mkvdev -vdev lpar_4_rootvg -vadapter vhost4


so each lpar now has a HDISK0

Then I have made another hdisk thru

mklv -lv aix1rootlvm rootvg 50G hdisk1
mklv -lv aix2rootlvm rootvg 50G hdisk1
mklv -lv aix3rootlvm rootvg 50G hdisk1
mklv -lv aix4rootlvm rootvg 50G hdisk1


and assigned to lpars on different/new VHOSTx

So now each LPAR has
HDISK0
HDISK1
and I mirrored them.

LHEA presented to each LPAR.. Not thru VIO ****)

1) How can I utilise VIO_SERVER_2

2) Failover to VIO_SERVER_2

3) Load Balancing Concept in VIOS ?

Thanks

As far as I know there isn't any automatic load balancing you can do. Normally you will present hdisk from each VIO like you've done and then you would mirror it.

So if LPAR1 has hdisk0 from VIO1, and hdisk1 from VIO2, then when you mirror hdisk0 to hdisk1 you would be covered if you have to reboot VIO1 or VIO2.

thanks for your quick answer.

Okay, that would help me have the LPAR alive.. thru the AIX O/S

how about the SAN disks ?

From my DS8000 i have created logical disks and assigned to VIO_SERVER_1
Create Virtual SCSI Adapter on VIO_SERVER_1 and LPAR_1 + LPAR_2 + LPAR_3 + LPAR_4

Allocation
VIO_SERVER_1 disk10 (From SAN) given to LPAR_1
VIO_SERVER_1 disk11 (From SAN) given to LPAR_2
VIO_SERVER_1 disk12 (From SAN) given to LPAR_3
VIO_SERVER_1 disk13 (From SAN) given to LPAR_4

Now if the Vio_server_1 goes down all those disks will disappear from LPAR_1 + LPAR_2 + LPAR_3 + LPAR_4

1) How can I make failover or redundancy for it with VIO_Server_2 (other than Mirroring)

2) Can I use Mobility under HMC to move the LPAR Partition under the same Managed system to another VIO Server (in my case VIO_SERVER_2 ? )

thanks