Re: fio 2.0.9 fails: shmget: No space left on device

[Jens Axboe <axboe@kernel.dk>]

On 09/21/2012 02:34 PM, Konstantin Boyandin wrote:
> Hello Jens,
> 
> On 09/21/2012 07:15 PM, Jens Axboe wrote:
>> On 09/21/2012 01:51 PM, Konstantin Boyandin wrote:
>>> Hello,
>>>
>>> When trying to run the command line
>>>
>>> fio --bs=4k --size=128m --direct=1 --runtime=10 --rw=randread
>>> --numjobs=32 --group_reporting --time_based --name=128m
>>>
>>> I see only this:
>>>
>>> shmget: No space left on device
>>> error: failed to setup shm segment
>>
>> Hmmm. Can you send me the output of:
>>
>> $ grep . /proc/sys/kernel/shm*
> 
> /proc/sys/kernel/shmall:2097152
> /proc/sys/kernel/shmmax:33554432
> /proc/sys/kernel/shmmni:4096
> /proc/sys/kernel/shm_rmid_forced:0
> 
>> $ ipcs -l
> 
> ------ Shared Memory Limits --------
> max number of segments = 4096
> max seg size (kbytes) = 32768
> max total shared memory (kbytes) = 8388608
> min seg size (bytes) = 1
> 
> ------ Semaphore Limits --------
> max number of arrays = 128
> max semaphores per array = 250
> max semaphores system wide = 32000
> max ops per semop call = 32
> semaphore max value = 32767
> 
> ------ Messages: Limits --------
> max queues system wide = 6365
> max size of message (bytes) = 8192
> default max size of queue (bytes) = 16384
> 
>> $ ipcs -m
> 
> ------ Shared Memory Segments --------
> key        shmid      owner      perms      bytes      nattch     status
> 
> The VM wasn't restarted after the fio failed run.
> 
> fio was run by root user.

Oh, try with this please.

diff --git a/init.c b/init.c
index da1f472..b3215f5 100644
--- a/init.c
+++ b/init.c
@@ -254,7 +254,7 @@ static int setup_thread_area(void)
 		shm_id = shmget(0, size, IPC_CREAT | 0600);
 		if (shm_id != -1)
 			break;
-		if (errno != EINVAL && errno != ENOMEM) {
+		if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 			perror("shmget");
 			break;
 		}

-- 
Jens Axboe