We've got two datacenters and in every datacenter 2 VIOs.
The VIO manages the I/O of the LPARs. So: Is it possible to reboot the VIO without shuting down an LPAR
Let's say you have a managed system with two VIOs (vio1 and vio2) and a lot of fully-virtualized LPARs (lpar1, lpar2, ...).
If an LPAR has VSCSI connection, it must be connected to both VIOs.
VIO mappings:
If you have VSCSI disks:
check their healthcheck parameters:
and that the disks are available through both vscsi adapters:
Check priorities of the paths:
If you use VFC (NPIV), check that you have at least 2 VFC adapters from both of VIOs:
Check their mappings:
Check that dyntrk and fast_fail for fscsi devices set to yes and fast_fail:
Then check that every disk device is available through both of the adapters. This check depends on your drivers. If you use AIX MPIO, you can look this information using lspath command. For EMC - powermt, for Hitachi - dlnkmgr.
Then, when you are sure, that all of your disks are available through both VIOs, you must check network connection.
You have to go on your VIO servers and check their, if you have SEA (shared ethernet adapter) or some other type of configuration. With SEA Fail-over configuration, you have to check which VIO server is active:
After you've checked everything, you can rely that there are no known bugs in your AIX and VIO versions, which could prevent switching from one VIO to another, but you can also switch everything manual - change priorities for every disk, or switch off devices (make them "defined") which use vio1 resources, and then reboot vio1. After it comes up, check everything again. If you changed priorities or removed some devices, restore the configuration before rebooting vio2.
I hope I didn't forget something very critical.
These 4 Users Gave Thanks to agent.kgb For This Post:
A very concise description by agent.kgb, thank you for that!
@thread-o/p: notice that what agent.kgb described is in fact "best practice" and even if you would not have the need to reboot the VIOS right now you should set things up like agent.kgb described it anyway!
If you find out that this is not the case it would be a perfect occasion to get some downtime URGENTLY and correct this! Otherwise these problems will come back to haunt you and most probably will raise their ugly heads in the most inconvenient moment possible.
I hope someone has experienced this problem before and can help. I have a P730 (8231-E2D) which is fitted with 8 IBM SAS disks on 2 separate SISSAS controllers. The disk type is ST9146853SS (Seagate SAS 146Gb).
The problem occurs when I try to install the VIO server software at 2.2.3. It... (3 Replies)
Hi,
I am facing an issue in vio server. When I run
bosboot -ad /dev/hdisk0
I am getting an error
trustchk: Verification of attributes failed: /usr/sbin/bootinfo
: accessauths
regards,
vjm
Please use code tags next time for your code and data. (8 Replies)
Hi
In the vio server when I do # lsattr -El hdisk*, I get a PVID. The same PVID is also seen when I put the lspv command on the vio client partition. This way Im able to confirm the lun using the PVID.
Similarly how does the vio client partition gets the virtual ethernet scsi client adapter... (1 Reply)
I am working in AIX. In a P series machine both aix and linux os can install.. specific command is there for aix to list out the vio servers details mapped in a frame(ie. lssrc "IBM.ManagementServer", like that..) is there any command is der to list out vio servers details in linux or how to find... (1 Reply)
I have same lun (hdisk3) assigned to 2 vios server (dual vio server) and this is mapped to the client lpar. I have sddpcm on the VIO.
On the VIOA, the attributes for fscsi1 and fscsi3 are set to fast_fail and dyntrk is set to yes
Now, if I do a lqueryvg -Atp on the hdisk3, I get a "DISK... (4 Replies)
I am planning carving out dual VIO servers on a P750 based and would like to know how to allocate internal disks to the VIOS. This has 4 internal disks and I would to assign 2 disks to each VIO.
This is what I was thinking of assigning . Any advise?
vio1
U5802.001.9K8H757-P1-C1 PCI-E x8... (17 Replies)
Hi Guys,
I'm working on building a new 595 machine.. I'm try to achieve high availability for the VIO clients using 2 VIO servers, The ethernet part is satisfied using SEA failover, Now how do I achieve redundancy for the disks, its the servers internal disk attached to the scsi cards...
... (2 Replies)
Hi,
I want to know wheather partition size for installation of vio client can be specified on vio server
example
If I am installing vio server on blade with 2*300gb hard disk,after that I want to create 2 vio client (AIX Operating system) wheather I can specify hard disk size while... (1 Reply)