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Operating Systems AIX Inherited VIO server an LPARs Post 302493274 by rbatte1 on Wednesday 2nd of February 2011 09:31:44 AM
Old 02-02-2011
Inherited VIO server an LPARs

Lucky me, someone has installed a server and got it running with the best intentions, but leaving me a headache. Smilie

We have a simple p520 with 4 disks. 2x145Gb & 2x300Gb. The smaller disk pair have been built into a VIO mirrored rootvg, and quite right too.

The other two disks form a volume group each (VIO storage pools). The plan was to ensure that disk allocated to the LPARs would be made in pairs, one from each user-volume group so that we would be confident at the LPAR that the hdisk definitions presented would be from different real media. The problem I now have is that we are adding more real disk (another 16x300Gb in a separate CEC) and add more LPARs.

So, should I create more volume groups on the VIO server (storage pools) on a one-disk-one-pool rule, or should I approach this another way. What would be nice would be a way to present the LPAR with a single device made from a mirror at the VIO server and enforcing strictness on the VIO server to make sure that the mirrors are on different real disks.

I feel that if/when we have a disk failure, I'm going to have a huge mess of failed hdisks in the various LPARs we will have and a huge overhead in logging and maintaining disk separation for all these LPAR hdisks and mirrors making sure that LPAR mirrors do not inadvertently end up on the same real disk as the primary copy, albeit a different hdisk that the LPAR sees.

Big question/headache I know. Any suggestions? Smilie



Robin
Liverpool/Blackburn
UK
 

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roar_vs_connection_obj(3)				   RoarAudio Programmer's Manual				 roar_vs_connection_obj(3)

NAME
roar_vs_connection_obj, roar_vs_stream_obj, roar_vs_vio_obj - VS API interface for use of main API SYNOPSIS
#include <roaraudio.h> struct roar_connection * roar_vs_connection_obj(roar_vs_t * vss, int * error); struct roar_stream * roar_vs_stream_obj (roar_vs_t * vss, int * error); struct roar_vio_calls * roar_vs_vio_obj (roar_vs_t * vss, int * error); DESCRIPTION
Those functions return internal connection, stream and VIO object of the VS object. They are used to use the main API with a VS opened stream. roar_vs_connection_obj() returns the connection object used for the control connection to the server. roar_vs_stream_obj() returns the stream object storing information about the stream. roar_vs_vio_obj() returns the VIO object used to read data from or send data to the server. Returned objects are freed as soon as the VS object is closed. If the VS object was created using roar_vs_new_from_con(3) the connection is not closed by the VS object and stay valid after close until it is closed by the program or library. The VIO object MUST NOT be used while in buffered mode. PARAMETERS
vss The VS object to return internal objects from. error This is a pointer to a integer used to store the error value in case of error. This can be NULL if not used but it is very recom- mended to use this error value to report good error messages to the user. RETURN VALUE
On success these calls return the described object. On error, NULL is returned. EXAMPLES
FIXME SEE ALSO
roarvs(7), libroar(7), RoarAudio(7). RoarAudio May 2011 roar_vs_connection_obj(3)
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