NEC Storage M series driver

updated: 2021-10-28 23:18

NEC Storage M series driver

NEC Storage M series are dual-controller disk arrays which support online maintenance. This driver supports both iSCSI and Fibre Channel.

System requirements

Supported models:

  • NEC Storage M110, M310, M510 and M710 (SSD/HDD hybrid)
  • NEC Storage M310F and M710F (all flash)

Requirements:

  • Storage control software (firmware) revision 0950 or later (1015 or later is required to create more than 1024 volumes in a pool)
  • NEC Storage DynamicDataReplication license
  • (Optional) NEC Storage IO Load Manager license for QoS

Supported operations

  • Create, delete, attach, and detach volumes.
  • Create, list, and delete volume snapshots.
  • Create a volume from a snapshot.
  • Copy an image to a volume.
  • Clone a volume.
  • Extend a volume.
  • Migrate a volume.
  • Get volume statistics.
  • Efficient non-disruptive volume backup.
  • Manage and unmanage a volume.
  • Manage and unmanage a snapshot.

Preparation

Below is minimum preparation to a disk array. For details of each command, see the NEC Storage Manager Command Reference (IS052).

  • Common (iSCSI and Fibre Channel)
    1. Initial setup
      • Set IP addresses for management and BMC with the network configuration tool.
      • Enter license keys. (iSMcfg licenserelease)
    2. Create pools
      • Create pools for volumes. (iSMcfg poolbind)
      • Create pools for snapshots. (iSMcfg poolbind)
    3. Create system volumes
      • Create a Replication Reserved Volume (RSV) in one of pools. (iSMcfg ldbind)
      • Create Snapshot Reserve Areas (SRAs) in each snapshot pool. (iSMcfg srabind)
    4. (Optional) Register SSH public key
  • iSCSI only
    1. Set IP addresses of each iSCSI port. (iSMcfg setiscsiport)
    2. Create LD Sets for each node with setting multi-target mode on. (iSMcfg addldset)
    3. Delete some iscsi portal settings of each LD Sets to set to nec_iscsi_portals_per_cont parameter. (iSMcfg delldsetportal)
    4. Register initiator names of each node to the corresponding LD Set. (iSMcfg addldsetinitiator)
  • Fibre Channel only
    1. Start access control. (iSMcfg startacc)
    2. Create LD Sets for each node. (iSMcfg addldset)
    3. Register WWPNs of each node to the corresponding LD Set. (iSMcfg addldsetpath)

Configuration

Set the following in your cinder.conf, and use the following options to configure it.

If you use Fibre Channel:

[Storage1]
volume_driver = cinder.volume.drivers.nec.volume.MStorageFCDriver

If you use iSCSI:

[Storage1]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver

Also, set volume_backend_name.

[DEFAULT]
volume_backend_name = Storage1

This table shows configuration options for NEC Storage M series driver.

Description of NEC Storage M series driver configuration options
Configuration option = Default value Description
[DEFAULT]  
nec_actual_free_capacity = False (Boolean) Return actual free capacity.
nec_backend_max_ld_count = 1024 (Integer) Maximum number of managing sessions.
nec_backup_ldname_format = LX:%s (String) M-Series Storage LD name format for snapshots.
nec_backup_pools = (List) M-Series Storage backup pool number to be used.
nec_diskarray_name = (String) Diskarray name of M-Series Storage.
nec_iscsi_portals_per_cont = 1 (Integer) Number of iSCSI portals.
nec_ismcli_fip = None (IP) FIP address of M-Series Storage iSMCLI.
nec_ismcli_password = (String) Password for M-Series Storage iSMCLI.
nec_ismcli_privkey = (String) Filename of RSA private key for M-Series Storage iSMCLI.
nec_ismcli_user = (String) User name for M-Series Storage iSMCLI.
nec_ismview_alloptimize = False (Boolean) Use legacy iSMCLI command with optimization.
nec_ismview_dir = /tmp/nec/cinder (String) Output path of iSMview file.
nec_ldname_format = LX:%s (String) M-Series Storage LD name format for volumes.
nec_ldset = (String) M-Series Storage LD Set name for Compute Node.
nec_ldset_for_controller_node = (String) M-Series Storage LD Set name for Controller Node.
nec_pools = (List) M-Series Storage pool numbers list to be used.
nec_queryconfig_view = False (Boolean) Use legacy iSMCLI command.
nec_ssh_pool_port_number = 22 (Integer) Port number of ssh pool.
nec_unpairthread_timeout = 3600 (Integer) Timeout value of Unpairthread.

Required options

  • nec_ismcli_fip
    FIP address of M-Series Storage.
  • nec_ismcli_user
    User name for M-Series Storage iSMCLI.
  • nec_ismcli_password
    Password for M-Series Storage iSMCLI.
  • nec_ismcli_privkey
    RSA secret key file name for iSMCLI (for public key authentication only). Encrypted RSA secret key file cannot be specified.
  • nec_diskarray_name
    Diskarray name of M-Series Storage. This parameter must be specified to configure multiple groups (multi back end) by using the same storage device (storage device that has the same nec_ismcli_fip). Specify the disk array name targeted by the relevant config-group for this parameter.
  • nec_backup_pools
    Specify a pool number where snapshots are created.

Timeout configuration

  • rpc_response_timeout

    Set the timeout value in seconds. If three or more volumes can be created at the same time, the reference value is 30 seconds multiplied by the number of volumes created at the same time. Also, Specify nova parameters below in nova.conf file.

    [DEFAULT]
block_device_allocate_retries = 120
block_device_allocate_retries_interval = 10
  • timeout server (HAProxy configuration)

    In addition, you need to edit the following value in the HAProxy configuration file (/etc/haproxy/haproxy.cfg) in an environment where HAProxy is used.

    timeout server = 600 #Specify a value greater than rpc_response_timeout.

    Run the service haproxy reload command after editing the value to reload the HAProxy settings.

    Note

    The OpenStack environment set up using Red Hat OpenStack Platform Director may be set to use HAProxy.

Configuration example for /etc/cinder/cinder.conf

When using one config-group

  • When using nec_ismcli_password to authenticate iSMCLI (Password authentication):

    [DEFAULT]
enabled_backends = Storage1

[Storage1]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver
volume_backend_name = Storage1
nec_ismcli_fip = 192.168.1.10
nec_ismcli_user = sysadmin
nec_ismcli_password = sys123
nec_pools = 0
nec_backup_pools = 1

  • When using nec_ismcli_privkey to authenticate iSMCLI (Public key authentication):

    [DEFAULT]
enabled_backends = Storage1

[Storage1]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver
volume_backend_name = Storage1
nec_ismcli_fip = 192.168.1.10
nec_ismcli_user = sysadmin
nec_ismcli_privkey = /etc/cinder/id_rsa
nec_pools = 0
nec_backup_pools = 1

When using multi config-group (multi-backend)

  • Four config-groups (backends)

    Storage1, Storage2, Storage3, Storage4

  • Two disk arrays

    200000255C3A21CC(192.168.1.10)

    Example for using config-group, Storage1 and Storage2

    2000000991000316(192.168.1.20)

    Example for using config-group, Storage3 and Storage4

    [DEFAULT]
enabled_backends = Storage1,Storage2,Storage3,Storage4

[Storage1]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver
volume_backend_name = Gold
nec_ismcli_fip = 192.168.1.10
nec_ismcli_user = sysadmin
nec_ismcli_password = sys123
nec_pools = 0
nec_backup_pools = 2
nec_diskarray_name = 200000255C3A21CC

[Storage2]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver
volume_backend_name = Silver
nec_ismcli_fip = 192.168.1.10
nec_ismcli_user = sysadmin
nec_ismcli_password = sys123
nec_pools = 1
nec_backup_pools = 3
nec_diskarray_name = 200000255C3A21CC

[Storage3]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver
volume_backend_name = Gold
nec_ismcli_fip = 192.168.1.20
nec_ismcli_user = sysadmin
nec_ismcli_password = sys123
nec_pools = 0
nec_backup_pools = 2
nec_diskarray_name = 2000000991000316

[Storage4]
volume_driver = cinder.volume.drivers.nec.volume.MStorageISCSIDriver
volume_backend_name = Silver
nec_ismcli_fip = 192.168.1.20
nec_ismcli_user = sysadmin
nec_ismcli_password = sys123
nec_pools = 1
nec_backup_pools = 3
nec_diskarray_name = 2000000991000316
updated: 2021-10-28 23:18
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