03-05-2016
What was not clear to me is whether the storage was physically located.
It sounds like it was using local storage (local, i.e., physical, not from a SAN) and the LPAR (aka virtual machine) was using LVM mirroring.
This was the preferred (read almost only) solution in 2005 before SAN storage was common. HOWEVER, if you have SAN backed storage what is 'common' when you have local (i.e., in the CEC aka Compute node) storage is to use the local storage for rootvg, dvd repositories, secure logs, etc. and SAN and MPIO for hosting VM (or client LPAR) storage.
re: active/passive LVM mirroring: the consistency check was to help 'guess' which mirror was last written when recovering from a crash. In your case, while the VIOS was down, one path was down and it is clear which disk is stale and needs to be synced.
Over time, the disks will sync automatically - but you can speed the process by running syncvg (lsvg vgName will tell you if there are stale disks and if so, how many stale PP)
This User Gave Thanks to MichaelFelt For This Post:
10 More Discussions You Might Find Interesting
1. IP Networking
I have two machines on my network - one OSX mac and one linux box. The mac is my main workhorse, and the linux box does occasional chores and webserving. Currently the mac shares (via NFS) files with the Liinux box.
Would it be less demanding on the mac if I made it a client, and moved my files... (2 Replies)
Discussion started by: mistafeesh
2 Replies
2. AIX
Hi,
I would like to reboot vio client but I am not able to access vio client(I am not able to get putty) , I am able to get putty of vio server,
is there any command by using which from vio server I can reboot vio client? (3 Replies)
Discussion started by: manoj.solaris
3 Replies
3. AIX
I have a DUAL VIO ( IBM Virtual I/O ) setup on p 570.
Two Vio server ( VIOS ) and many LPAR clients.
VIO ( latest version + service pack + applied the fix ) and AIX 6.1 ML2
When both VIOs are running, and if I turn on a Client LPAR, the LPAR hangs at LED 25b3 for more than 1 hour then it... (2 Replies)
Discussion started by: filosophizer
2 Replies
4. HP-UX
Greetings
Im running HP UX B 11.11 and Im not sure on how to do this request to "mirror current 5 LVs on vgSPAN to the new LUNs assigned to the VG and unmirror the LVs and finally return the 12 LUNs to SAN storage" The existing LVs were extended to accommodate a user request to extend 2 FS on... (3 Replies)
Discussion started by: hedkandi
3 Replies
5. AIX
Hello,
Lets say for simplicity that I do not use any vlan config inside my server - one lpar group use hea physical port1, another group hea physical port2. Physical port1 configured as vlan1 on external switch, physical port2 as vlan2.
What is the common practice - should I isolate my vios... (0 Replies)
Discussion started by: vilius
0 Replies
6. AIX
is there any way to create shared virtual disk between two LPARs like how you can do it using Storage through Fiber on two servers ?
Trying to stimulate HACMP between two LPARs (1 Reply)
Discussion started by: filosophizer
1 Replies
7. HP-UX
Dear Engineer,
Is there any command in HP-UX work similiar to PVS command in Linux?
With Best Regards,
Md. Abdullah-Al Kauser (4 Replies)
Discussion started by: makauser
4 Replies
8. UNIX for Advanced & Expert Users
Hi everybody,
I have Power5 server with 4 internal hdisks each of 70Gb.
VIOS server was installed via Virtual I/O Server Image Repository on the HMC.
HMC release - 7.7.0
VIOS rootvg installed on 2 disk(these disks merged to one storage pool during VIOS install process),and 2 others hdisks... (2 Replies)
Discussion started by: Ravil Khalilov
2 Replies
9. AIX
I know the VIOs are generally to be treated as an appliance and one should never drop down to oem_setup_env. In reality however, oem is a very useful tool to get the job done. So that leads me into the question of using the Chef client on a VIO.
Currently a big push to manage all our *nix... (4 Replies)
Discussion started by: RecoveryOne
4 Replies
10. AIX
I have a broken PV in a VIO VG that's used to support client LPARs using LVs. On the client LPAR, I reduced all PVs from the relevant client VG and thus deleted it. I.e. there is no client LPAR using the VIO VG. Yet when I try to reducevg the VIO VG, it complains that the LV hosted on the PV is... (2 Replies)
Discussion started by: maraixadm
2 Replies
LEARN ABOUT CENTOS
vgscan
VGSCAN(8) System Manager's Manual VGSCAN(8)
NAME
vgscan - scan all disks for volume groups and rebuild caches
SYNOPSIS
vgscan [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--mknodes] [-P|--partial] [-v|--verbose]
DESCRIPTION
vgscan scans all SCSI, (E)IDE disks, multiple devices and a bunch of other disk devices in the system looking for LVM physical volumes and
volume groups. Define a filter in lvm.conf(5) to restrict the scan to avoid a CD ROM, for example.
In LVM2, vgscans take place automatically; but you might still need to run one explicitly after changing hardware.
OPTIONS
See lvm(8) for common options.
--mknodes
Also checks the LVM special files in /dev that are needed for active logical volumes and creates any missing ones and removes unused
ones.
--cache
Scan devices for LVM physical volumes and volume groups and instruct the lvmetad daemon to update its cached state accordingly.
SEE ALSO
lvm(8), vgcreate(8), vgchange(8)
Sistina Software UK LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) VGSCAN(8)