How to add the attribute to odm if it contains negative value?
Hi All,
I am trying to add odm_wait attribute to CuAt programatically using putattr(&pCuAt).
I was able to add when the odm_wait has positive value [i.e 0]. But, I am facing issues when the odm_wait has negative value [i.e-1]
As per IBM, these are the odm_wait possible values
Code:
#define ODM_WAIT -1 /* Wait forever */
#define ODM_NOWAIT 0 /* Return immediately if lock cannot be granted */
This is the piece of code from my program.
Code:
strcpy(pCuAt.name, hdiskname);
strcpy(pCuAt.attribute, "odm_wait");
sprintf(pCuAt.value,"%d", odm_wait);
strcpy(pCuAt.type, "R");
strcpy(pCuAt.generic, "DU");
strcpy(pCuAt.rep, "nr");
pCuAt.nls_index=120;
if (putattr(&pCuAt) == -1)
printf("error: could not add attribute <odm_wait> to odm \n");
else
printf("Notice : %s odm_wait attribute is added successfully: \n", hdiskname);
My program is running without any issue in both the cases [-1,0] and also I am not getting any error when the odm_wait attribute is -1.
But, when odm_wait attribute is -1, it is not actually adding the attribute to ODM.
When I try to access that value it is not displaying any records.
Code:
bash-3.2# odmget -q"name= hdisk7 and attribute=odm_wait" CuAt
bash-3.2#
bash-3.2#
Do we need to follow any other way to add the attribute when it has negative value?
Please help me to figure out the issue.
Many Thanks
Last edited by jim mcnamara; 06-13-2013 at 10:14 AM..
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1) I notice a space between the = token and the value hdisk7. This might have influence.
2) What does the simple odmget queries return (something/nothing)
If neither of these return a value, especially the one you want, then try to understand why it is failing.
Note: you can create a text file to add an attribute using odmadd.
Code:
$ echo "CuAt:\
name = "hdisk7" \
attribute = "odm_wait" \
value = "-1" \
" >myadd.text
$ su root
# odmadd myadd.text
I am wondering if this is really something I would want to do using CuAt as there are other attributes that get updated.
Hope this helps!
---------- Post updated at 01:27 PM ---------- Previous update was at 01:20 PM ----------
OK, I read the infocenter documentation:
Quote:
odm_lock Subroutine
Purpose
Puts an exclusive lock on the requested path name.
Library
Object Data Manager Library (libodm.a)
Syntax
#include <odmi.h>int odm_lock (LockPath, TimeOut) char *LockPath; int TimeOut; ....
Parameters
Item Description LockPath Specifies a string containing the path name in the file system in which to locate object classes or the path name to an object class to lock. TimeOut Specifies the amount of time, in seconds, to wait if another application or method holds a lock on the requested object class or classes. The possible values for the TimeOut parameter are: TimeOut = ODM_NOWAIT The odm_lock subroutine is unsuccessful if the lock cannot be granted immediately.TimeOut = Integer The odm_lock subroutine waits the specified amount of seconds to retry an unsuccessful lock request.TimeOut = ODM_WAIT The odm_lock subroutine waits until the locked path name is freed from its current lock and then locks it.
The define values you specify are for the call to odm_lock() and not meant as an attribute in a ODM record. IMHO, the "LockPath" parameter is the pathname of the classfile (e.g., ${ODMDIR}/CuAt)
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