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* [SPDK] How to create large capacity (1GB+) malloc disk
@ 2017-03-06  9:07 Wenhua Liu
  0 siblings, 0 replies; 3+ messages in thread
From: Wenhua Liu @ 2017-03-06  9:07 UTC (permalink / raw
  To: spdk

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Hi,

Does anybody know to create large capacity (1GB+) mallock disk?

I’m running SPDK NVMF target in virtual controller mode. I tried to create 2 malloc disks(Malloc0 and Malloc1) with 2GB capacity but failed with the following message. I also tried  1GB and also failed.

blockdev_malloc.c: 396:create_malloc_disk: ***ERROR*** spdk_zmalloc failed

Once I changed to 512MB, it worked.

I’m running SPDK in a Ubuntu 16.04 system with 12GB memory.

[Malloc]
   NumberOfLuns 2
   LunSizeInMB 2048

[Subsystem2]
NQN nqn.2016-06.io.spdk:cnode2
   Core 0
   Mode Virtual
  Listen RDMA 12.12.12.100:4420
   SN SPDK00000000000001
  Namespace Malloc0
  Namespace Malloc1

Thanks,
-Wenhua

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^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [SPDK] How to create large capacity (1GB+) malloc disk
@ 2017-03-06  9:28 Liu, Changpeng
  0 siblings, 0 replies; 3+ messages in thread
From: Liu, Changpeng @ 2017-03-06  9:28 UTC (permalink / raw
  To: spdk

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Hi Wenhua,

First you should make sure your system has enough 2MB huge pages:

e.g.: echo 8192 >/proc/sys/vm/nr_hugepages

then you can try start the nvmf application with parameter –s 4096, which means 4GB memory for the application.


From: SPDK [mailto:spdk-bounces(a)lists.01.org] On Behalf Of Wenhua Liu
Sent: Monday, March 6, 2017 5:07 PM
To: Storage Performance Development Kit <spdk(a)lists.01.org>
Subject: [SPDK] How to create large capacity (1GB+) malloc disk

Hi,

Does anybody know to create large capacity (1GB+) mallock disk?

I’m running SPDK NVMF target in virtual controller mode. I tried to create 2 malloc disks(Malloc0 and Malloc1) with 2GB capacity but failed with the following message. I also tried  1GB and also failed.

blockdev_malloc.c: 396:create_malloc_disk: ***ERROR*** spdk_zmalloc failed

Once I changed to 512MB, it worked.

I’m running SPDK in a Ubuntu 16.04 system with 12GB memory.

[Malloc]
   NumberOfLuns 2
   LunSizeInMB 2048

[Subsystem2]
NQN nqn.2016-06.io.spdk:cnode2
   Core 0
   Mode Virtual
  Listen RDMA 12.12.12.100:4420
   SN SPDK00000000000001
  Namespace Malloc0
  Namespace Malloc1

Thanks,
-Wenhua

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^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [SPDK] How to create large capacity (1GB+) malloc disk
@ 2017-03-06 16:48 Wenhua Liu
  0 siblings, 0 replies; 3+ messages in thread
From: Wenhua Liu @ 2017-03-06 16:48 UTC (permalink / raw
  To: spdk

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Hi Changpeng,

Thanks for the information. This works.

Regards,
-Wenhua

From: SPDK <spdk-bounces(a)lists.01.org> on behalf of "Liu, Changpeng" <changpeng.liu(a)intel.com>
Reply-To: Storage Performance Development Kit <spdk(a)lists.01.org>
Date: Monday, March 6, 2017 at 1:28 AM
To: Storage Performance Development Kit <spdk(a)lists.01.org>
Subject: Re: [SPDK] How to create large capacity (1GB+) malloc disk

Hi Wenhua,

First you should make sure your system has enough 2MB huge pages:

e.g.: echo 8192 >/proc/sys/vm/nr_hugepages

then you can try start the nvmf application with parameter –s 4096, which means 4GB memory for the application.


From: SPDK [mailto:spdk-bounces(a)lists.01.org] On Behalf Of Wenhua Liu
Sent: Monday, March 6, 2017 5:07 PM
To: Storage Performance Development Kit <spdk(a)lists.01.org>
Subject: [SPDK] How to create large capacity (1GB+) malloc disk

Hi,

Does anybody know to create large capacity (1GB+) mallock disk?

I’m running SPDK NVMF target in virtual controller mode. I tried to create 2 malloc disks(Malloc0 and Malloc1) with 2GB capacity but failed with the following message. I also tried  1GB and also failed.

blockdev_malloc.c: 396:create_malloc_disk: ***ERROR*** spdk_zmalloc failed

Once I changed to 512MB, it worked.

I’m running SPDK in a Ubuntu 16.04 system with 12GB memory.

[Malloc]
   NumberOfLuns 2
   LunSizeInMB 2048

[Subsystem2]
NQN nqn.2016-06.io.spdk:cnode2
   Core 0
   Mode Virtual
  Listen RDMA 12.12.12.100:4420
   SN SPDK00000000000001
  Namespace Malloc0
  Namespace Malloc1

Thanks,
-Wenhua

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^ permalink raw reply	[flat|nested] 3+ messages in thread
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2017-03-06 16:48 Wenhua Liu
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