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Full Discussion: Unable to remove shared memory in Redhat Linux
Operating Systems Linux Red Hat Unable to remove shared memory in Redhat Linux Post 302447011 by LinuxLearner on Friday 20th of August 2010 01:01:44 PM
Old 08-20-2010
Unable to remove shared memory in Redhat Linux
unable to remove shared memory using ipcrm -m in linux

Code:
[pin01@brmhost lib]$ ipcs -m

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status      
0x00000000 32768      root      644        80         2                       
0x00000000 65537      root      644        16384      2                       
0x00000000 98306      root      644        280        2                       
0x00000000 196612     pin01     600        393216     2          dest         
0x00000000 229381     pin01     600        393216     2          dest         
0x00000000 262150     pin01     600        393216     2          dest         
0x00000000 294919     pin01     600        393216     2          dest         
0x00000000 327688     pin01     600        393216     2          dest         
0x00000000 360457     pin01     600        393216     2          dest         
0x00000000 393226     pin01     600        393216     2          dest         
0x00000000 425995     pin01     600        393216     2          dest         
0x00000000 458764     pin01     600        393216     2          dest         
0x00000000 491533     pin01     600        393216     2          dest

tried to remove as below:
Code:
[pin01@brmhost lib]$ ipcrm -m 196612

but still the shared memory is not removed
Code:
[pin01@brmhost lib]$ ipcs -m

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status      
0x00000000 32768      root      644        80         2                       
0x00000000 65537      root      644        16384      2                       
0x00000000 98306      root      644        280        2                       
0x00000000 196612     pin01     600        393216     2          dest         
0x00000000 229381     pin01     600        393216     2          dest         
0x00000000 262150     pin01     600        393216     2          dest         
0x00000000 294919     pin01     600        393216     2          dest         
0x00000000 327688     pin01     600        393216     2          dest         
0x00000000 360457     pin01     600        393216     2          dest         
0x00000000 393226     pin01     600        393216     2          dest         
0x00000000 425995     pin01     600        393216     2          dest         
0x00000000 458764     pin01     600        393216     2          dest         
0x00000000 491533     pin01     600        393216     2          dest    
196612

any help from any one ?
Thanks
 

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LEARN ABOUT MOJAVE

ipcrm

ipcrm(1)						    BSD General Commands Manual 						  ipcrm(1)

NAME

     ipcrm -- remove the specified message queues, semaphore sets, and shared memory segments

SYNOPSIS

     ipcrm [-M shmkey] [-m shmid] [-Q msgkey] [-q msqid] [-S semkey] [-s semid] ...

DESCRIPTION

     Ipcrm removes the specified message queues, semaphores and shared memory segments.  These System V IPC objects can be specified by their cre-
     ation id or any associated key.

     The following options are used to specify which IPC objects will be removed.  Any number and combination of these options can be used:

     -M shmkey
	     Mark the shared memory segment associated with key shmkey for removal.  This marked segment will be destroyed after the last detach.

     -m shmid
	     Mark the shared memory segment associated with id shmid for removal.  This marked segment will be destroyed after the last detach.

     -Q msgkey
	     Remove the message queue associated with key msgkey from the system.

     -q msqid
	     Remove the message queue associated with the id msqid from the system.

     -S semkey
	     Remove the semaphore set associated with key semkey from the system.

     -s semid
	     Removes the semaphore set associated with id semid from the system.

     The identifiers and keys associated with these System V IPC objects can be determined by using ipcs(1)

SEE ALSO

     ipcs(1)

BSD
								  August 8, 1994							       BSD
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